DWSIM/C2/Introduction-to-Flowsheeting/English-timed

Time	Narration
00:01	Welcome to this tutorial on Introduction to flowsheeting in DWSIM
00:07	In this tutorial, we will learn to:
00:10	Simulate a mixer
00:12	Follow it up with a flash separator
00:15	Give a two phase feed
00:17	This tutorial is recorded using DWSIM version 5. 8 (Classic UI) Update 3 and Windows 10 OS
00:27	But, this process is identical in Linux, Mac OS X or FOSSEE OS on ARM.
00:35	To practice this tutorial, you should have an introductory exposure to DWSIM.
00:41	The prerequisite DWSIM tutorials are mentioned on our website.
00:47	flow-begin file used in the tutorial is provided as a Code file on this tutorial page.
00:54	Download the file from Code Files link.
00:58	I have already opened DWSIM on my machine.
01:02	Please ensure that DWSIM opens as an administrator.
01:07	Go to File menu and click on Open File.
01:12	I have already downloaded and extracted the flow-begin file on my Desktop.
01:18	Select the file from the Desktop.
01:22	This file already contains all the material streams necessary for this tutorial.
01:28	You can see two streams Inlet1 and Inlet2 in the flowsheet canvas.
01:34	Let us go back to the slides.
01:37	It summarises the contents of this file.
01:41	When we mix these streams, we get equimolar composition.
01:46	Let us go back to DWSIM.
01:49	We will now modify the streams, so as to have vapor in them. Select Inlet 1.
01:57	On the left, go to the Property Editor Window.
02:01	Go to Input Data.
02:03	Under Stream Conditions tab, select Flash Spec as Pressure and Vapor Fraction. (PVF)
02:11	Type Vapor Phase Mole Fraction as 1 and press Enter. Here the entire stream is a vapor.
02:21	In a similar way, make Inlet2 to have 50% vapor fraction.
02:27	Select Inlet 2.
02:30	Under Stream Conditions tab, select Flash Spec as Pressure and Vapor Fraction. (PVF)
02:39	Type Vapor Phase Mole Fraction as 0.5 and press Enter.
02:45	Now let us insert a mixer to the flowsheet.
02:49	At the bottom of the main simulation window, go to Mixers/Splitters.
02:55	From the displayed list, drag and drop a Stream Mixer to the Flowsheet
03:00	Click on the mixer named MIX 002.
03:05	Let's change the name of MIX 002 to Mixer. Press Enter.
03:10	Now let us insert an output stream for the mixer.
03:14	Click on Streams tab. From the displayed list, drag and drop a Material Stream to the Flowsheet.
03:21	We will leave that stream as unspecified.
03:24	Let’s change the name of this stream to mixer-out. Press Enter.
03:31	We are now ready to specify the Mixer. So let’s click on it.
03:36	On the left, we can see a tab displaying properties related to the Mixer.
03:42	Here we can see that the mixer has up to 6 inlet streams.
03:48	Under Connections, click on the drop-down against Inlet Stream 1. Select Inlet1.
03:57	Click on the drop down against Inlet Stream 2 and select Inlet2.
04:04	Click on the drop down against Outlet Stream and select mixer-out.
04:11	We can move the streams to make them better aligned.
04:15	The mixer is red, as it is not simulated yet.
04:19	Click on the mixer.
04:22	Go to Calculation Parameters.
04:25	Click on the drop-down against Pressure Calculation.
04:30	We can see there are three different modes of Pressure Calculation: Inlet Minimum, Inlet Average, Inlet Maximum
04:40	Select Inlet Minimum if outlet pressure has to be minimum of all inlet streams.
04:47	Select Inlet Average if outlet pressure has to be average of all inlet streams.
04:53	Select Inlet Maximum if outlet pressure has to be maximum of all inlet streams.
05:00	Here both the inlet streams are at 1 atmosphere pressure.
05:06	So, the Pressure Calculation mode will not matter here.
05:10	By default, Inlet Minimum is selected, we will leave it unchanged.
05:16	Now we will run the simulation.
05:19	So, click on the Solve Flowsheet button on the toolbar.
05:24	The mixer has become blue now.
05:27	It means that the calculations are completed.
05:31	Now click on mixer out stream.
05:34	Go to the Property Editor Window of the Mixer.
05:38	Locate Results tab.
05:41	Navigate to Compounds Amounts Mixture.
05:47	We can verify that its composition is as expected.
05:52	It has equimolar composition.
05:56	Now let us insert a Gas-Liquid Separator.
06:00	It can be used to simulate VLE, LLE and VLLE systems.
06:06	At the bottom of the main simulation window, go to Separators/Tanks.
06:12	From the displayed list, drag and drop a Gas-Liquid Separator to the Flowsheet.
06:18	Click on the Gas-Liquid Separator named SEP-004.
06:24	Now we will connect two output streams to the Separator.
06:29	Drag and drop a Material Stream to the flowsheet area.
06:33	We will leave that stream as unspecified, as its properties are to be calculated.
06:40	We will name it as Vapour.
06:43	Similarly, add another material stream and name it as Liquid.
06:49	We are now ready to specify the Gas-Liquid Separator. So let’s click on it.
06:56	On the left, we can see a tab displaying properties related to the Gas-Liquid Separator.
07:03	Under Connections, click on the drop-down against Inlet Stream 1. Select mixer-out.
07:12	We can now connect a total of five more input streams.
07:16	The Separator mixes all the streams and separates.
07:21	It also has a port to connect an Energy Stream.
07:25	Click on the drop-down against Vapour Stream and select Vapour.
07:31	Similarly, click on the drop-down against Light Liquid Stream. Select Liquid.
07:39	Then click on Solve Flowsheet button on the toolbar.
07:43	Now we will check whether the vapor and liquid are split properly in the separator.
07:50	Now click on Vapour stream.
07:53	From the Property Editor Window, locate Results section.
07:58	Navigate to Compounds Amounts Mixture.
08:03	The mole fraction of Benzene is 0.55.
08:08	We can do a check on the working of the Mixer also.
08:12	Now click on mixer-out. From the Property Editor Window, locate Results section.
08:20	Navigate to Compounds Amounts Vapor.
08:26	The mole fraction of Benzene is 0.55.
08:30	Let us now save this file using the Save As option.
08:35	I will save it as flow end.
08:40	Let's summarise.
08:41	In this tutorial, we have learnt to Simulate a mixer, Follow it up with a flash separator and Give a two phase feed
08:50	Here are some assignments for you.
08:53	The assignment in this slide has to do with mass balances.
08:57	I use blue colour to indicate streams and equipment.
09:02	Let us go to the next assignment.
09:06	You have to verify mole fractions as mentioned in this slide.
09:10	The third assignment has to do with the Separator.
09:14	Recall that we mentioned that it could be used to mix streams.
09:19	Remove the mixer and mixer-out and try it out.
09:23	See if you get the same answers.
09:27	In the next assignment, you will do the separation at a higher temperature.
09:32	Click on Separator
09:33	From the Property Editor Window.Go to Calculation Parameter Window Select Override separation temperature checkbox
09:43	In the Resulting field change the value to 100
09:48	Bring Energy stream from Object Palette to the flowsheet.
09:52	Connect this stream to the Energy stream of the Separator.
09:57	Simulate and analyse your results.
10:01	Watch the video available at the following link. It summarizes the Spoken Tutorial project.
10:08	The Spoken Tutorial Project Team conducts workshops and gives certificates. For more details, please write to us.
10:17	Please post your timed queries in this forum.
10:21	The FOSSEE team coordinates conversion of existing flowsheets into DWSIM.
10:27	We give honorarium and certificates for those who do this. For more details, please visit this site.
10:36	The FOSSEE team helps migrate commercial simulator labs to DWSIM.
10:42	We give honorarium and certificates for those who do this. For more details, please visit this site
10:51	Spoken Tutorial and FOSSEE projects are funded by NMEICT, MHRD, Government of India.
11:00	We thank the DWSIM team for making it as an open source software.
11:05	This tutorial was originally recorded by Prof Kannan Moudgalya in May 2015. This is Kaushik Datta from IIT Bombay. Thanks for joining.

Contributors and Content Editors

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