Difference between revisions of "DWSIM-3.4/C2/Creating-a-material-stream-in-DWSIM/English-timed"

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{| Border=1
 
{| Border=1
 
| <center>'''Time'''</center>
 
| <center>'''Time'''</center>
Line 6: Line 5:
 
|-
 
|-
 
| 00:00
 
| 00:00
−
| Welcome to the spoken tutorial on creating a material stream in '''DWSIM'''
+
| Welcome to the '''spoken tutorial''' on '''creating a material stream in DWSIM'''.
  
 
|-
 
|-
 
| 00:05
 
| 00:05
−
|My name is Kannan Moudgalya
+
|My name is Kannan Moudgalya.
  
 
|-
 
|-
 
| 00:07
 
| 00:07
−
| In this tutorial, we are going to learn
+
| In this tutorial, we are going to learn:
  
 
|-
 
|-
 
| 00:10
 
| 00:10
−
|How to select chemical components
+
| How to select chemical components
  
 
|-
 
|-
 
| 00:14
 
| 00:14
−
|How to choose a thermodynamic package
+
| How to choose a thermodynamic package
  
 
|-
 
|-
 
| 00:17
 
| 00:17
−
|How to choose units and values
+
| How to choose units and values
  
 
|-
 
|-
 
| 00:19  
 
| 00:19  
−
|And How to specify a material stream
+
| And how to specify a material stream.
  
 
|-
 
|-
 
| 00:23
 
| 00:23
−
| To record this tutorial, I am using '''DWSIM''' 3.4 windows version
+
| To record this tutorial, I am using '''DWSIM 3.4''' windows version.
  
 
|-
 
|-
 
| 00:29
 
| 00:29
−
|But this process is identical in '''Linux''', '''Mac OS X '''and '''FOSSEE '''on ARM
+
|But this process is identical in '''Linux''', '''Mac OS X '''and '''FOSSEE '''on '''ARM'''.
  
 
|-
 
|-
 
| 00:35
 
| 00:35
−
| To practice this tutorial you should have access to''' DWSIM'''
+
| To practice this tutorial, you should have access to''' DWSIM'''.
  
 
|-
 
|-
 
| 00:39
 
| 00:39
−
| Let us start with creating a new steady state simulation
+
| Let us start with creating a new '''steady state simulation'''.
  
 
|-
 
|-
 
| 00:46
 
| 00:46
−
|When '''DWSIM''' is opened, you see a startup window, such as this
+
|When '''DWSIM''' is opened, you see a startup window, such as this.
 
|-
 
|-
 
| 00:53
 
| 00:53
Line 57: Line 56:
 
|-
 
|-
 
| 00:57
 
| 00:57
−
|If a simulation wizard appears, cancel it
+
|If a simulation wizard appears, cancel it.
  
 
|-
 
|-
 
| 01:02
 
| 01:02
−
|On the top left, locate a field called '''Simulation'''
+
|On the top left, locate a field called '''Simulation'''.
  
 
|-
 
|-
 
| 01:08
 
| 01:08
−
| Hover the mouse over the puzzle like button next to it
+
| Hover the mouse over the puzzle like button next to it.
  
 
|-
 
|-
 
| 01:14
 
| 01:14
−
| You can see that it is known as '''Configure Simulation'''
+
| You can see that it is known as '''Configure Simulation'''.
  
 
|-
 
|-
 
| 01:18
 
| 01:18
−
|Press this button
+
|Press this button.
  
 
|-
 
|-
 
| 01:23
 
| 01:23
−
| A '''Configure Simulation''' pop-up opens
+
| A '''Configure Simulation''' pop-up opens.
  
 
|-
 
|-
 
| 01:26
 
| 01:26
−
|In some earlier versions, this pop-up opened automatically
+
|In some earlier versions, this pop-up opened automatically.
  
 
|-
 
|-
 
|01:31
 
|01:31
−
| The lettering is very small and unreadable in this recording
+
| The lettering is very small and unreadable in this recording.
  
 
|-
 
|-
 
| 01:35
 
| 01:35
−
|To address this, I will zoom in on the relevant portion of this screen only
+
|To address this, I will zoom in on the relevant portion of this screen only.
  
 
|-
 
|-
 
| 01:42
 
| 01:42
−
|I have now rearranged the screen for better readability
+
|I have now rearranged the screen for better readability.
  
 
|-
 
|-
 
| 01:46
 
| 01:46
−
| In the component search tab of this window, type '''benzene'''
+
| In the '''Component Search''' tab of this window, type "benzene".
  
 
|-
 
|-
 
| 01:59
 
| 01:59
−
|'''Benzene '''appears in two rows. We are interested in the entry that has''' DWSIM''' as the database
+
|'''Benzene '''appears in two rows. We are interested in the entry that has''' DWSIM''' as the database.
  
 
|-
 
|-
 
| 02:07
 
| 02:07
−
|We will explain in another tutorial the significance of other databases
+
|We will explain in another tutorial the significance of other databases.
  
 
|-
 
|-
 
| 02:13
 
| 02:13
−
| Double click anywhere on this line
+
| Double click anywhere on this line.
  
 
|-
 
|-
 
| 02:17
 
| 02:17
−
| You could have pressed the '''Add''' button also which is on the right hand side which we will see shortly
+
| You could have pressed the '''Add''' button also which is on the right hand side which we will see shortly.
  
 
|-
 
|-
 
| 02:23
 
| 02:23
−
|You can see that''' Benzene '''is now selected
+
|You can see that''' Benzene '''is now selected.
  
 
|-
 
|-
 
| 02:27
 
| 02:27
−
|I shall let you see it by shifting the pop up window to the left
+
|I shall let you see it by shifting the pop-up window to the left.
  
 
|-
 
|-
 
| 02:40
 
| 02:40
−
| Repeat this for '''toluene'''
+
| Repeat this for '''toluene'''.
  
 
|-
 
|-
 
| 02:52
 
| 02:52
−
|Let us select this. Let us add
+
|Let us select this. Let us add.
  
 
|-
 
|-
 
| 02:59
 
| 02:59
−
|You can see that the component selection is completed
+
|You can see that the component selection is completed.
  
 
|-
 
|-
 
|03:04
 
|03:04
−
|I shall shift the window back to where it was
+
|I shall shift the window back to where it was.
  
 
|-
 
|-
 
| 03:12
 
| 03:12
−
| We are now ready to choose '''Thermodynamics'''
+
| We are now ready to choose '''Thermodynamics'''.
  
 
|-
 
|-
 
| 03:14
 
| 03:14
−
| Let us go back to the slides
+
| Let us go back to the slides.
  
 
|-
 
|-
 
| 03:18
 
| 03:18
−
|Let us go to the next slide
+
|Let us go to the next slide.
  
 
|-
 
|-
 
| 03:21
 
| 03:21
−
| This slide has guidelines on how to choose '''thermodynamics'''
+
| This slide has guidelines on how to choose '''thermodynamics'''.
  
 
|-
 
|-
 
| 03:24
 
| 03:24
−
|Covering the theory behind this slide is beyond the scope of this tutorial
+
|Covering the theory behind this slide is beyond the scope of this tutorial.
  
 
|-
 
|-
 
|03:30
 
|03:30
−
|As '''Benzene''' and '''Toluene''' form an ideal solution, we can choose '''Raoult's law'''
+
|As '''Benzene''' and '''Toluene''' form an ideal solution, we can choose '''Raoult's law'''.
  
 
|-
 
|-
 
| 03:35
 
| 03:35
−
| Let us do this in '''DWSIM'''
+
| Let us do this in '''DWSIM'''.
  
 
|-
 
|-
 
| 03:40
 
| 03:40
−
|Locate the '''thermodynamics''' tab on the left hand side. Click on it
+
|Locate the '''Thermodynamics''' tab on the left hand side. Click on it.
  
 
|-
 
|-
 
| 03:47
 
| 03:47
−
|A sub-menu appears in the white space above
+
|A sub-menu appears in the white space above.
  
 
|-
 
|-
 
| 03:51
 
| 03:51
−
| Click on '''Property Packages''' in the sub-menu
+
| Click on the '''Property Packages''' in the sub-menu.
  
 
|-
 
|-
 
| 03:56
 
| 03:56
−
| Scroll down in this list and locate an option called '''Raoult's law'''
+
| Scroll down in this list and locate an option called '''Raoult's law'''.
  
 
|-
 
|-
Line 189: Line 188:
 
|-
 
|-
 
| 04:08
 
| 04:08
−
| You will see '''Raoult's law''' appearing on the right hand side of the pop-up
+
| You will see '''Raoult's law''' appearing on the right hand side of the '''pop-up'''.
  
 
|-
 
|-
Line 197: Line 196:
 
|-
 
|-
 
| 04:20
 
| 04:20
−
| On the lower right hand corner of this pop-up, locate a button called '''Back to Simulation.'''Click on it.
+
| On the lower right hand corner of this pop-up, locate a button called '''Back to Simulation.''' Click on it.
  
 
|-
 
|-
 
| 04:28
 
| 04:28
−
| The configure simulation pop-up gets closed and we are ready to do the simulation
+
| The configure simulation pop-up gets closed and we are ready to do the simulation.
  
 
|-
 
|-
 
| 04:35
 
| 04:35
−
| The canvas at the centre of this page is used to create flowsheets
+
| The '''canvas''' at the centre of this page is used to create '''flowsheet'''s.
  
 
|-
 
|-
 
| 04:41
 
| 04:41
−
|We will now create a material stream
+
|We will now create a '''material stream'''.
  
 
|-
 
|-
 
| 04:44
 
| 04:44
−
| On the right hand side, you see an '''object palette'''
+
| On the right hand side, you see an '''object palette'''.
  
 
|-
 
|-
 
| 04:49
 
| 04:49
−
|It has a large collection of many useful chemical engineering objects
+
|It has a large collection of many useful chemical engineering objects.
  
 
|-
 
|-
 
| 04:55
 
| 04:55
−
|You can scroll it and see what all are available
+
|You can scroll it and see what all are available.
  
 
|-
 
|-
 
| 05:01
 
| 05:01
−
| Right at the top of this is the '''material stream''' object. Click it and drag it to the flowsheet
+
| Right at the top of this is the '''Material Stream''' object. Click it and drag it to the '''flowsheet'''.
  
 
|-
 
|-
 
| 05:12
 
| 05:12
−
| At the desired place, remove your finger from the mouse to drop the stream
+
| At the desired place, remove your finger from the mouse to drop the '''stream'''.
  
 
|-
 
|-
Line 241: Line 240:
 
|-
 
|-
 
| 05:25
 
| 05:25
−
| Immediately after dropping the stream, a pop-up to enter compositions appears
+
| Immediately after dropping the stream, a pop-up to enter compositions appears.
  
 
|-
 
|-
 
| 05:31
 
| 05:31
−
|Notice that '''mole fraction '''is selected by default
+
|Notice that '''Mole Fraction '''is selected by default.
  
 
|-
 
|-
 
| 05:36
 
| 05:36
−
|You can choose one of the other possibilities. But, I shall leave it as it is
+
|You can choose one of the other possibilities. But, I shall leave it as it is.
  
 
|-
 
|-
 
| 05:42
 
| 05:42
−
| The chemicals that we already selected appear here automatically
+
| The chemicals that we already selected, appear here automatically.
  
 
|-
 
|-
 
| 05:49
 
| 05:49
−
| Type''' 0.5''' in the equilibrium composition of '''toluene'''
+
| Type''' 0.5''' in the '''Equilibrium composition''' of '''Toluene'''.
  
 
|-
 
|-
 
| 05:55
 
| 05:55
−
|Press down arrow
+
|Press down-arrow.
  
 
|-
 
|-
 
| 05:57
 
| 05:57
−
| Type '''0.5''' in the equilibrium composition of '''benzene'''
+
| Type '''0.5''' in the '''Equilibrium Composition''' of '''benzene'''.
  
 
|-
 
|-
 
|06:02
 
|06:02
−
|Click '''Apply'''
+
|Click '''Apply'''.
  
 
|-
 
|-
 
| 06:06
 
| 06:06
−
| The total of the mole fractions appears on the right hand side
+
| The total of the '''mole fractions''' appears on the right hand side.
  
 
|-
 
|-
 
| 06:12
 
| 06:12
−
|If the total is not 1, '''DWSIM '''normalises the entries, so that the total becomes 1
+
|If the total is not 1, '''DWSIM ''''''normalize'''s the entries, so that the total becomes 1.
  
 
|-
 
|-
 
| 06:19
 
| 06:19
−
|But this may give some unpredictable values at times
+
|But this may give some unpredictable values at times.
  
 
|-
 
|-
 
| 06:22
 
| 06:22
−
|So, you yourself may want to ensure that the total comes to 1. Click the''' Close''' button
+
|So, you yourself may want to ensure that the total comes to 1. Click the''' Close''' button.
  
 
|-
 
|-
 
| 06:31
 
| 06:31
−
| You can always get back to the previous pop-up by double clicking on the stream
+
| You can always get back to the previous pop-up by double clicking on the '''stream'''.
  
 
|-
 
|-
 
| 06:36
 
| 06:36
−
| Below the configure simulation button, notice a place to change the '''System of Units'''
+
| Below the '''configure simulation''' button, notice a place to change the '''System of Units'''.
  
 
|-
 
|-
 
| 06:43
 
| 06:43
−
|Let us click this menu and choose '''CGS System'''
+
|Let us click this menu and choose '''CGS System'''.
  
 
|-
 
|-
 
| 06:49
 
| 06:49
−
| Let us now complete the specification of this stream
+
| Let us now complete the specification of this stream.
  
 
|-
 
|-
 
| 06:52
 
| 06:52
−
|Click on the stream icon in the flowsheet once – Do not double click it
+
|Click on the '''stream''' icon in the flowsheet once; do not double-click it.
  
 
|-
 
|-
 
| 07:00
 
| 07:00
−
| On the left hand side of the flowsheet you will see the selected object window
+
| On the left hand side of the '''flowsheet''', you will see the selected object window.
  
 
|-
 
|-
 
| 07:07
 
| 07:07
−
|This window consists of '''Properties '''and '''Appearance''' tabs
+
|This window consists of '''Properties '''and '''Appearance''' tabs.
  
 
|-
 
|-
 
| 07:12
 
| 07:12
−
| The properties tab shows all the properties of the stream. '''DWSIM '''assigns default values to all properties
+
| The '''properties''' tab shows all the properties of the '''stream'''. '''DWSIM '''assigns default values to all properties.
  
 
|-
 
|-
 
| 07:21
 
| 07:21
−
| That is first scroll up this page
+
| Let us first scroll up this page.
  
 
|-
 
|-
 
| 07:27
 
| 07:27
−
|There are many ways to complete the specification of a material stream
+
|There are many ways to complete the specification of a '''material stream'''.
  
 
|-
 
|-
 
| 07:31
 
| 07:31
−
| Press on '''Specification'''
+
| Press on '''Specification'''.
  
 
|-
 
|-
 
| 07:34
 
| 07:34
−
| A down arrow appears on the right hand side – press it
+
| A down-arrow appears on the right hand side, press it.
  
 
|-
 
|-
 
| 07:40
 
| 07:40
−
| The default is to specify '''pressure and temperature'''  
+
| The default is to specify '''pressure and temperature'''.
  
 
|-
 
|-
 
| 07:43
 
| 07:43
−
|I shall leave it as it is
+
|I shall leave it as it is.
  
 
|-
 
|-
 
| 07:45
 
| 07:45
−
| I shall press the down arrow once again to close the menu
+
| I shall press the down-arrow once again to close the menu.
  
 
|-
 
|-
 
| 07:50
 
| 07:50
−
| We see the number 25 already entered against the temperature
+
| We see the number 25 already entered against the temperature.
  
 
|-
 
|-
 
| 07:55
 
| 07:55
−
|I will by hovering the mouse over the '''Temperature,''' we see the units as degree Celsius
+
|By hovering the '''mouse''' over the '''Temperature,''' we see the '''unit'''s as degree Celsius.
  
 
|-
 
|-
 
| 08:02
 
| 08:02
−
| Let us click to the right of this number
+
| Let us click to the right of this number.
  
 
|-
 
|-
 
| 08:07
 
| 08:07
−
|It is an editable field. Let me delete it and enter '''30'''
+
|It is an editable '''field'''. Let me delete it and enter '''30'''.
  
 
|-
 
|-
 
| 08:15
 
| 08:15
−
| Let us look at '''pressure''' next. I shall leave it at '''1''' atmosphere
+
| Let us look at '''pressure''' next. I shall leave it at '''1''' atmosphere.
  
 
|-
 
|-
 
| 08:23
 
| 08:23
−
| Let us specify the '''flowrate''' next
+
| Let us specify the '''flowrate''' next.
  
 
|-
 
|-
 
| 08:26
 
| 08:26
−
|We can specify''' mass flowrate '''or''' molar flowrate '''or '''volumetric flowrate'''
+
|We can specify-''' mass flowrate '''or''' molar flowrate '''or '''volumetric flowrate'''.
  
 
|-
 
|-
 
| 08:33
 
| 08:33
−
| We will specify '''molar flowrate'''
+
| We will specify '''molar flowrate'''.
  
 
|-
 
|-
 
| 08:38
 
| 08:38
−
|I shall delete the old value and enter '''100'''
+
|I shall delete the old value and enter '''100'''.
  
 
|-
 
|-
 
| 08:47
 
| 08:47
−
| Press enter to save this change
+
| Press '''Enter''' to save this change.
  
 
|-
 
|-
 
| 08:50
 
| 08:50
−
| Units for this field are moles per second as we can see now
+
| Units for this '''field''' are '''moles per second''' as we can see now.
  
 
|-
 
|-
 
| 08:56
 
| 08:56
−
|It is possible to use a combination of units, such as '''CGS '''and '''SI'''
+
|It is possible to use a combination of units such as '''CGS '''and '''SI'''.
  
 
|-
 
|-
 
| 09:01
 
| 09:01
−
| We will postpone this discussion to another tutorial
+
| We will postpone this discussion to another tutorial.
  
 
|-
 
|-
 
| 09:05
 
| 09:05
−
|Now the stream is fully defined
+
|Now the '''stream''' is fully defined.
  
 
|-
 
|-
 
| 09:08
 
| 09:08
−
| '''DWSIM''' has given the name '''MSTR-004''' to this stream automatically
+
| '''DWSIM''' has given the name '''MSTR-004''' to this stream automatically.
  
 
|-
 
|-
 
| 09:16
 
| 09:16
−
| You may see some other name in your simulation, but do not worry about it
+
| You may see some other name in your '''simulation''', but do not worry about it.
  
 
|-
 
|-
 
| 09:21
 
| 09:21
−
|As I am not happy with this automatically generated name, let me change it
+
|As I am not happy with this automatically generated name, let me change it.
  
 
|-
 
|-
 
| 09:27
 
| 09:27
−
| Under the selected object window, click on the appearance tab
+
| Under the selected '''Object''' window, click on the '''Appearance''' tab.
  
 
|-
 
|-
 
| 09:33
 
| 09:33
−
|The '''Appearance''' tab is used to modify the visual appearance of the stream
+
|The '''Appearance''' tab is used to modify the visual appearance of the stream.
  
 
|-
 
|-
 
| 09:37
 
| 09:37
−
| Click on the blank space beside '''Name''' and type ''' Inlet1''' after deleting this.
+
| Click on the blank space beside '''Name''' and type ''' Inlet1''', after deleting this.
  
 
|-
 
|-
Line 437: Line 436:
 
|-
 
|-
 
| 10:04
 
| 10:04
−
|We will build on this material stream in the upcoming tutorials.
+
|We will build on this '''material stream''' in the upcoming tutorials.
  
 
|-
 
|-
Line 449: Line 448:
 
|-
 
|-
 
|10:15
 
|10:15
−
| Let me summarise what we learnt in this tutorial.
+
| Let me summarize what we learnt in this tutorial.
  
 
|-
 
|-
Line 489: Line 488:
 
|-
 
|-
 
| 10:48
 
| 10:48
−
|Check how '''DWSIM '''normalises when you press '''apply'''.
+
|Check how '''DWSIM '''normalizes when you press '''Apply'''.
  
 
|-
 
|-
Line 497: Line 496:
 
|-
 
|-
 
| 10:57
 
| 10:57
−
|Check what the '''normalise''' button does when the total is not 1.
+
|Check what the '''normalize''' button does when the total is not 1.
  
 
|-
 
|-
Line 517: Line 516:
 
|-
 
|-
 
| 11:20
 
| 11:20
−
|Carry out the previous assignments for this stream also
+
|Carry out the previous assignments for this stream also.
  
 
|-
 
|-
 
| 11:26
 
| 11:26
−
|This brings us to the end of this tutorial
+
|This brings us to the end of this tutorial.
  
 
|-
 
|-
 
| 11:28
 
| 11:28
−
| This video summarises the Spoken Tutorial project.
+
| This video summarizes the '''Spoken Tutorial''' project.
  
 
|-
 
|-
Line 533: Line 532:
 
|-
 
|-
 
| 11:39
 
| 11:39
−
| We conduct workshops using Spoken Tutorials. Give Certificates. Please contact us.
+
| We conduct workshops using Spoken Tutorials; give certificates. Please contact us.
  
 
|-
 
|-
 
| 11:47
 
| 11:47
−
| The Spoken Tutorial project is funded by NMEICT, MHRD, Govt. of India
+
| The Spoken Tutorial project is funded by NMEICT, MHRD, Govt. of India.
  
 
|-
 
|-
 
| 11:52
 
| 11:52
−
| We thank the DWSIM team for making it as an open source software
+
| We thank the DWSIM team for making it as an open source software.
  
 
|-
 
|-
 
| 11:58
 
| 11:58
−
|I want to thank you the listener for joining me in this tutorial, goodbye.
+
|I want to thank you, the listener, for joining me in this tutorial. Goodbye.
  
 
|}
 
|}

Latest revision as of 10:06, 8 January 2020

Time
Narration
00:00 Welcome to the spoken tutorial on creating a material stream in DWSIM.
00:05 My name is Kannan Moudgalya.
00:07 In this tutorial, we are going to learn:
00:10 How to select chemical components
00:14 How to choose a thermodynamic package
00:17 How to choose units and values
00:19 And how to specify a material stream.
00:23 To record this tutorial, I am using DWSIM 3.4 windows version.
00:29 But this process is identical in Linux, Mac OS X and FOSSEE on ARM.
00:35 To practice this tutorial, you should have access to DWSIM.
00:39 Let us start with creating a new steady state simulation.
00:46 When DWSIM is opened, you see a startup window, such as this.
00:53 Click on Create new simulation
00:57 If a simulation wizard appears, cancel it.
01:02 On the top left, locate a field called Simulation.
01:08 Hover the mouse over the puzzle like button next to it.
01:14 You can see that it is known as Configure Simulation.
01:18 Press this button.
01:23 A Configure Simulation pop-up opens.
01:26 In some earlier versions, this pop-up opened automatically.
01:31 The lettering is very small and unreadable in this recording.
01:35 To address this, I will zoom in on the relevant portion of this screen only.
01:42 I have now rearranged the screen for better readability.
01:46 In the Component Search tab of this window, type "benzene".
01:59 Benzene appears in two rows. We are interested in the entry that has DWSIM as the database.
02:07 We will explain in another tutorial the significance of other databases.
02:13 Double click anywhere on this line.
02:17 You could have pressed the Add button also which is on the right hand side which we will see shortly.
02:23 You can see that Benzene is now selected.
02:27 I shall let you see it by shifting the pop-up window to the left.
02:40 Repeat this for toluene.
02:52 Let us select this. Let us add.
02:59 You can see that the component selection is completed.
03:04 I shall shift the window back to where it was.
03:12 We are now ready to choose Thermodynamics.
03:14 Let us go back to the slides.
03:18 Let us go to the next slide.
03:21 This slide has guidelines on how to choose thermodynamics.
03:24 Covering the theory behind this slide is beyond the scope of this tutorial.
03:30 As Benzene and Toluene form an ideal solution, we can choose Raoult's law.
03:35 Let us do this in DWSIM.
03:40 Locate the Thermodynamics tab on the left hand side. Click on it.
03:47 A sub-menu appears in the white space above.
03:51 Click on the Property Packages in the sub-menu.
03:56 Scroll down in this list and locate an option called Raoult's law.
04:03 Choose this by double clicking on it.
04:08 You will see Raoult's law appearing on the right hand side of the pop-up.
04:12 To see this, let me shift the pop-up to the left.
04:20 On the lower right hand corner of this pop-up, locate a button called Back to Simulation. Click on it.
04:28 The configure simulation pop-up gets closed and we are ready to do the simulation.
04:35 The canvas at the centre of this page is used to create flowsheets.
04:41 We will now create a material stream.
04:44 On the right hand side, you see an object palette.
04:49 It has a large collection of many useful chemical engineering objects.
04:55 You can scroll it and see what all are available.
05:01 Right at the top of this is the Material Stream object. Click it and drag it to the flowsheet.
05:12 At the desired place, remove your finger from the mouse to drop the stream.
05:19 You may leave it anywhere on this canvas.
05:21 You can also move the stream to another place later, if required.
05:25 Immediately after dropping the stream, a pop-up to enter compositions appears.
05:31 Notice that Mole Fraction is selected by default.
05:36 You can choose one of the other possibilities. But, I shall leave it as it is.
05:42 The chemicals that we already selected, appear here automatically.
05:49 Type 0.5 in the Equilibrium composition of Toluene.
05:55 Press down-arrow.
05:57 Type 0.5 in the Equilibrium Composition of benzene.
06:02 Click Apply.
06:06 The total of the mole fractions appears on the right hand side.
06:12 If the total is not 1, DWSIM 'normalize's the entries, so that the total becomes 1.
06:19 But this may give some unpredictable values at times.
06:22 So, you yourself may want to ensure that the total comes to 1. Click the Close button.
06:31 You can always get back to the previous pop-up by double clicking on the stream.
06:36 Below the configure simulation button, notice a place to change the System of Units.
06:43 Let us click this menu and choose CGS System.
06:49 Let us now complete the specification of this stream.
06:52 Click on the stream icon in the flowsheet once; do not double-click it.
07:00 On the left hand side of the flowsheet, you will see the selected object window.
07:07 This window consists of Properties and Appearance tabs.
07:12 The properties tab shows all the properties of the stream. DWSIM assigns default values to all properties.
07:21 Let us first scroll up this page.
07:27 There are many ways to complete the specification of a material stream.
07:31 Press on Specification.
07:34 A down-arrow appears on the right hand side, press it.
07:40 The default is to specify pressure and temperature.
07:43 I shall leave it as it is.
07:45 I shall press the down-arrow once again to close the menu.
07:50 We see the number 25 already entered against the temperature.
07:55 By hovering the mouse over the Temperature, we see the units as degree Celsius.
08:02 Let us click to the right of this number.
08:07 It is an editable field. Let me delete it and enter 30.
08:15 Let us look at pressure next. I shall leave it at 1 atmosphere.
08:23 Let us specify the flowrate next.
08:26 We can specify- mass flowrate or molar flowrate or volumetric flowrate.
08:33 We will specify molar flowrate.
08:38 I shall delete the old value and enter 100.
08:47 Press Enter to save this change.
08:50 Units for this field are moles per second as we can see now.
08:56 It is possible to use a combination of units such as CGS and SI.
09:01 We will postpone this discussion to another tutorial.
09:05 Now the stream is fully defined.
09:08 DWSIM has given the name MSTR-004 to this stream automatically.
09:16 You may see some other name in your simulation, but do not worry about it.
09:21 As I am not happy with this automatically generated name, let me change it.
09:27 Under the selected Object window, click on the Appearance tab.
09:33 The Appearance tab is used to modify the visual appearance of the stream.
09:37 Click on the blank space beside Name and type Inlet1, after deleting this.
09:55 Click on the Name again.
09:58 You can see the name Inlet1 appearing below this stream in the flowsheet.
10:04 We will build on this material stream in the upcoming tutorials.
10:08 Let us go back to the slides.
10:13 We go to the next slide.
10:15 Let me summarize what we learnt in this tutorial.
10:19 We defined a material stream.
10:22 Chose chemical components.
10:24 Chose the property estimation package.
10:27 Completed specifications.
10:29 Assigned values and units.
10:32 Specified temperature, pressure and flow rate.
10:36 Pointed out many different options.
10:40 I would like to give some assignments now.
10:43 Choose Benzene and Toluene mole fractions that do not add up to 1.
10:48 Check how DWSIM normalizes when you press Apply.
10:53 Go to the page where you defined mole fractions.
10:57 Check what the normalize button does when the total is not 1.
11:02 Go to the page where we defined the molar flow rate.
11:05 DWSIM automatically displays equivalent flow rates in other units.
11:11 Check if these values are consistent.
11:16 Create a stream consisting of Benzene, Toluene and Xylene.
11:20 Carry out the previous assignments for this stream also.
11:26 This brings us to the end of this tutorial.
11:28 This video summarizes the Spoken Tutorial project.
11:33 If you do not have good bandwidth, you can download and watch it.
11:39 We conduct workshops using Spoken Tutorials; give certificates. Please contact us.
11:47 The Spoken Tutorial project is funded by NMEICT, MHRD, Govt. of India.
11:52 We thank the DWSIM team for making it as an open source software.
11:58 I want to thank you, the listener, for joining me in this tutorial. Goodbye.

Contributors and Content Editors

Nancyvarkey, PoojaMoolya, Pratik kamble, Sandhya.np14

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