DWSIM/C3/Custom-Unit-Operation-using-Scilab/English-timed

Time	Narration
00:01	Welcome to this tutorial on simulating a Custom Unit Operation using Scilab.
00:07	In this tutorial, we will learn to: Create a custom unit operation using Scilab
00:14	Calculate the Outlet pressure of product stream
00:18	Calculate Molar flow rate and Enthalpy
00:22	To record this tutorial, I am using DWSIM 5. 6 update 8 (Classic UI) and Windows 10
00:32	But, this process is identical in Linux, Mac OS X or FOSSEE OS on ARM.
00:40	To practice this tutorial, you should know to- Add components to a flowsheet
00:46	Select thermodynamic packages
00:49	Add material streams and specify their properties
00:54	The prerequisite tutorials are available on our website.
00:59	You can access these tutorials and all the associated files from this site.
01:05	You should also have Scilab 5.02 (or higher) installed on your system.
01:12	First let us learn what is Scilab CAPE-OPEN Unit Operation.
01:17	It is an unit operation implementation for which the calculations can be entered in Scilab.
01:25	More information on this is given in the Additional reading material link of this tutorial.
01:31	We will develop a flowsheet to determine the product stream Temperature, Pressure, Molar flow rate and Molar enthalpy from a Mixer model created using Scilab.
01:42	Here we give Inlet Stream Conditions of the product stream.
0147	Now let me open DWSIM (Classic UI).
01:52	To open DWSIM, go to the Desktop. Right-click on DWSIM (Classic UI) and click Run as Administrator.
02:04	Welcome to DWSIM window opens. Close this window.
02:10	Now go to the File menu and select New Steady-state Simulation.
02:18	Simulation Configuration Wizard window appears.
02:22	At the bottom, click on the Next button.
02:26	In the Compounds search tab, type Water.
02:30	Select Water from the ChemSep database.
02:34	Similarly, add Methanol.
02:38	Followed by Ethanol.
02:41	And then click on the Next button at the bottom.
02:45	The Property Packages window opens.
02:49	From Available Property Packages list, double-click on Raoult’s Law.
02:55	Then click on the Next button at the bottom.
02:59	The next option after this, is System of Units.
03:04	Under System of Units, select SI.
03:08	Click on the Finish button at the bottom.
03:12	Let us maximize the simulation window.
03:16	Let’s insert the feed streams that enter the Custom Mixer.
03:21	Go to Streams tab, at the bottom of the main simulation.
03:26	From the displayed list, drag and drop three Material Streams to the Flowsheet.
03:32	Click on the first material stream named as MSTR-000
03:38	Let’s change the name of this stream to Water.
03:42	Now we will specify the Water stream properties.
03:47	Go to Input Data.
03:49	Under Stream Conditions tab, select Flash Spec as Temperature and Pressure (TP).
03:55	By default, Temperature and Pressure should already be selected as Flash Spec.
04:01	Change Temperature to 300 Kelvin and press Enter.
04:07	Change Pressure to 100000 Pascals and press Enter.
04:12	Change Mass Flow to 10 kg per second and press Enter.
04:17	Now let us specify the Water stream compositions.
04:21	For this, click on Compound Amounts tab under Input Data.
04:27	Choose the Basis as Mole Fractions, if not already selected.
04:32	By default, Mole Fractions is already selected as Basis.
04:37	Now for Water, enter the Amount as 1 and press Enter.
04:43	For Methanol, enter 0 and press Enter.
04:48	For Ethanol, enter 0 and press Enter.
04:53	On the right, click on the Accept Changes button.
04:57	Similarly, we will define the other two material streams.
05:02	Click on the second material stream named MSTR-001.
05:07	Let’s change the name of this stream to Methanol.
05:12	Now we will specify the Methanol stream properties.
05:17	Go to Input Data.
05:19	Under Stream Conditions tab, select Flash Spec as Temperature and Pressure (TP).
05:25	Change Temperature to 305 Kelvin and press Enter.
05:31	Change Pressure' to 150000 Pa'scals and press Enter.
05:37	Change Mass Flow to 15 kg per second and press Enter.
05:43	Now click on the Compound Amounts tab under Input Data.
05:48	Choose Basis as Mole Fractions.
05:52	Now for Water, enter the Amount as 0 and press Enter.
05:59	For Methanol, enter 1 and press Enter.
06:04	For Ethanol, enter 0 and press Enter.
06:09	On the right, click on the Accept Changes button.
06:13	Now, click on the third material stream named as MSTR-002.
06:20	Let’s change the name of this stream to Ethanol.
06:25	Now we will specify the Ethanol stream properties.
06:30	Go to Input Data. Under Stream Conditions tab, select Flash Spec as Temperature and Pressure (TP)
06:39	Change Temperature to 310 Kelvin and press Enter.
06:45	Change Pressure to 200000 Pascal and press Enter.
06:51	Change Mass Flow to 20 kg per second and press Enter.
06:57	Then under Input Data click on Compound Amounts tab.
07:03	Choose the Basis as Mole Fractions.
07:07	For Water, enter the Amount as 0 and press Enter.
07:13	For Methanol, enter 0 and press Enter.
07:18	For Ethanol, enter 1 and press Enter.
07:23	On the right side, click on the Accept Changes button.
07:27	Now, let us insert another material stream that exits the custom mixer.
07:33	To do that, let us drag one material stream to the flowsheet.
07:38	Let us arrange the stream.
07:41	We will leave that stream as unspecified.
07:45	Then we will change the name of this stream to Mixed Product.
07:50	At the bottom of the main simulation window, go to CAPE-OPEN tab.
07:55	Drag and drop CAPE-OPEN Unit Operation to the flowsheet area.
08:01	Add CAPE-OPEN Unit Operation window opens.
08:05	From the displayed list, select SciLab Unit Operation. Click on OK at the bottom.
08:13	Let us change the name of this Unit Operation to Custom Mixer.
08:19	Now, we will create the inlet and outlet connection ports for the Custom Mixer.
08:26	For this, click on Custom Mixer.
08:30	From Property Editor window, click on Open CAPE-OPEN Object Editor.
08:36	Scilab CAPE-OPEN Unit Operation window opens.
08:40	Click on Ports tab.
08:43	Under Feed ports, there is an Add button at the bottom.
08:49	Click on Add button thrice to create three inlet ports for the three input material streams.
08:55	Under Product ports, click on Add button at the bottom.
09:02	This will create an outlet port for the output material stream.
09:07	Click on the Close button at the bottom.
09:11	Go to Property Editor Window.
09:14	Under Connections, go to inlet tab.
09:18	Click on the drop-down against Feed 1 and select Water.
09:25	Next, click on the drop-down against Feed 2 and select Methanol.
09:33	Next, click on the drop-down against Feed 3 and select Ethanol.
09:42	Now click on the Outlet tab.
09:45	Click on the drop-down against Product 1 and select Mixed Product.
09:52	All the connections now are completed.
09:56	Now we will write the code to perform the computation.
10:01	Click on Open CAPE-OPEN Object Editor.
10:05	Click on SciLab tab.
10:08	First we will get the feed properties of the material streams.
10:13	Then we will write the calculation routines.
10:17	Type this code in the Script tab.
10:20	This is to read the molar flow rate of the compounds from the inlet material streams.
10:26	Here, f1, f2 and f3 are the variables.
10:31	They store molar flow rate of the compounds from the inlet material streams.
10:37	getFeedProp is the command used to read the specified feed property.
10:42	1, 2 and 3 are the feed port numbers in SciLab to which the material streams in DWSIM is connected.
10:52	flow is the keyword.
10:54	flow indicates that components in the streams, has to be stored in f1,f2,f3 in form of an array.
11:03	Type this code in the Script tab.
11:06	This is to read the molar enthalpy of the inlet streams from the added inlet material stream.
11:13	Here, variables h1, h2 and h3 store the molar enthalpy of the added input material streams.
11:21	enthalpy is the keyword.
11:24	It indicate that molar enthalpy of material streams has to be stored in h1, h2 and h3.
11:32	Next, type this code.
11:35	This is to read the pressure of the inlet streams from the added inlet material stream.
11:41	Here, variables p1, p2 and p3 store the pressures of Water, Methanol and Ethanol streams.
11:49	pressure is the keyword.
11:51	It indicates that the pressure of material streams has to be stored in the variables p1, p2 and p3.
11:59	Now we will code the calculation routine
12:03	First we will calculate the outlet pressure.
12:07	For this let us consider the outlet pressure to be average pressure of all the 3 inlet streams.
12:15	Now, type this code. Outlet pressure is calculated and stored in the variable p.
12:24	Now we will calculate the molar flow rate of the compounds in the output stream.
12:30	Type this code in the Script tab.
12:33	Molar flow rate of compounds in the product stream is calculated. It is stored in the variable f in form of an array.
12:43	Now we will calculate the total molar flow rate of the product stream.
12:49	Type this code in the Script tab. Molar flow rate of product stream is calculated and stored in the variable totF.
12:58	Now we will calculate the enthalpy of the product stream.
13:04	Type this code. Enthalpy of the product stream is calculated and stored in the variable h.
13:12	Now we will pass the calculated variables to the Mixed Product material stream.
13:18	Type this code. setProduct indicates that, variables in the braces are to be passed to the stream in the product.
13:28	At the bottom, click Test.
13:31	Values stored and calculated in all the variables, are displayed in the Output tab.
13:37	Click Close button at the bottom.
13:40	Now we will run the simulation.
13:43	So, from the toolbar, click on Solve Flowsheet button.
13:48	When the calculations are completed, click on the Mixed Product in the flowsheet.
13:53	Under Stream Conditions, check Temperature, Pressure, Molar Flow.
14:02	Let's summarize.
14:04	In this tutorial, we have learnt to Create a custom unit operation using Scilab , Calculate the Outlet pressure of product stream, Calculate Molar flow rate and Enthalpy
14:19	As an assignment, Create a custom model for a heater to heat the given mixture of compounds for different Inlet stream conditions.
14:29	Watch the video available at following link. It summarizes the Spoken Tutorial project.
14:37	The Spoken Tutorial Project Team Conducts workshops and Gives certificates.
14:42	For more details, please write to us.
14:46	Please post your times queries in this forum.
14:50	The FOSSEE team coordinates conversion of existing flow sheets into DWSIM.
14:56	We give honorarium and certificates. For more details, please visit this site.
15:03	The FOSSEE team coordinates coding of solved examples of popular books.
15:09	We give honorarium and certificates. For more details, please visit this site.
15:16	The FOSSEE team helps migrate commercial simulator labs to DWSIM.
15:22	We give honorarium and certificates. For more details, please visit this site.
15:29	Spoken Tutorial and FOSSEE projects are funded by NMEICT, MHRD, Government of India.
15:38	This tutorial is contributed by Kaushik Datta and Priyam Nayak. Thanks for joining.

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