DWSIM/C2/Introduction-to-Flowsheeting/English

Visual Cue	Narration
Slide Number 1 Title Slide	Welcome to this tutorial on Introduction to flowsheeting in DWSIM
Slide Number 2 Learning Objectives	In this tutorial, we will learn to: Simulate a mixer Follow it up with a flash separator Give a two phase feed
Slide Number 3 System Requirements	This tutorial is recorded using DWSIM version 5. 8 (Classic UI) Update 3 and Windows 10 OS But, this process is identical in Linux, Mac OS X or FOSSEE OS on ARM.
Slide Number 4 Prerequisites	To practice this tutorial, you should have an introductory exposure to DWSIM. The prerequisite DWSIM tutorials are mentioned on our website.
Slide Number 5 Code Files	flow-begin file used in the tutorial is provided as a Code file on this tutorial page. Download the file from Code Files link.
Show DWSIM interface	I have already opened DWSIM on my machine.
	Please ensure that DWSIM opens as an administrator.
File >> Open File	Go to File menu and click on Open File.
Point to the file on the Desktop. Select the file from the Desktop.	I have already downloaded and extracted the flow-begin file on my Desktop. Select the file from the Desktop. This file already contains all the material streams necessary for this tutorial.
Point to the Inlet1 and Inlet2 streams	You can see two streams Inlet1 and Inlet2 in the flowsheet canvas.
	Let us go back to the slides.
Slide Number 6 Components: Benzene & Toluene Inlet Stream 1: Mole Fraction(Benzene): 0.8 Mole Fraction(Toluene): 0.2 Molar Flow Rate: 100 mol/s Temperature: 25 degree C Pressure: 1 atm Inlet Stream 2: Mole Fraction(Benzene): 0.2 Mole Fraction(Toluene): 0.8 Molar Flow Rate: 100 mol/s Temperature: 25 degree C Pressure: 1 atm	It summarises the contents of this file. When we mix these streams, we get equimolar composition.
	Let us go back to DWSIM.
Select Inlet 1	We will now modify the streams, so as to have vapor in them. Select Inlet 1.
Point to Property Editor Window.	On the left, go to the Property Editor Window.
Go to Input Data. Stream Conditions >> Flash Spec >> Pressure and Vapor Fraction. (PVF)	Go to Input Data. Under Stream Conditions tab, select Flash Spec as Pressure and Vapor Fraction. (PVF)
Vapor Phase Mole Fraction >> 1	Type Vapor Phase Mole Fraction as 1 and press Enter. Here the entire stream is a vapor.
	In a similar way, make Inlet2 to have 50% vapor fraction.
Select Inlet2	Select Inlet 2.
Stream Conditions >> Flash Spec >> Pressure and Vapor Fraction. (PVF)	Under Stream Conditions tab, select Flash Spec as Pressure and Vapor Fraction. (PVF)
Vapor Phase Mole Fraction >> 0.5	Type Vapor Phase Mole Fraction as 0.5 and press Enter.
	Now let us insert a mixer to the flowsheet.
Point to Mixers/Splitters	At the bottom of the main simulation window, go to Mixers/Splitters.
Click and drag Stream Mixer to the flowsheet	From the displayed list, drag and drop a Stream Mixer to the Flowsheet
Click MIX-002	Click on the mixer named MIX-002.
Type Mixer Press Enter.	Let's change the name of MIX-002 to Mixer. Press Enter.
Click and drag Material Stream to the flowsheet	Now let us insert an output stream for the mixer.
	Click on Streams tab.
Click and drag Material Stream to the flowsheet	From the displayed list, drag and drop a Material Stream to the Flowsheet.
	We will leave that stream as unspecified.
Type mixer-out Press Enter.	Let’s change the name of this stream to mixer-out. Press Enter.
Click Mixer	We are now ready to specify the Mixer. So let’s click on it.
Point to the tab on the left.	On the left, we can see a tab displaying properties related to the Mixer.
Point to the Connections tab	Here we can see that the mixer has up to 6 inlet streams.
Go to Connections Click on drop down arrow against Inlet Stream 1 Select Inlet1.	Under Connections, click on the drop-down against Inlet Stream 1. Select Inlet1.
Click on drop down arrow against Inlet Stream 2 Select Inlet2.	Click on the drop-down against Inlet Stream 2 and select Inlet2.
Click on drop down arrow against Outlet Stream Select mixer-out	Click on the drop-down against Outlet Stream and select mixer-out.
	We can move the streams to make them better aligned.
Cursor to the mixer	The mixer is red, as it is not simulated yet.
Click on the mixer.	Click on the mixer.
Cursor to Calculation Parameters Cursor to Pressure Calculation	Go to Calculation Parameters. Click on the drop-down against Pressure Calculation. We can see there are three different modes of Pressure Calculation: Inlet Minimum Inlet Average Inlet Maximum
Point to Inlet Minimum	Select Inlet Minimum if outlet pressure has to be minimum of all inlet streams.
Point to Inlet Average	Select Inlet Average if outlet pressure has to be average of all inlet streams.
Point to Inlet Maximum	Select Inlet Maximum if outlet pressure has to be maximum of all inlet streams.
	Here both the inlet streams are at 1 atm pressure. So, the Pressure Calculation mode will not matter here. By default, Inlet Minimum is selected, we will leave it unchanged.
	Now we will run the simulation.
Click on Solve Flowsheet button	So, click on the Solve Flowsheet button on the toolbar.
Point to the Mixer	The mixer has become blue now. It means that the calculations are completed.
Click on mixer-out and hover mouse at Properties Point to Property Editor Window Hover mouse at Results	Now click on mixer-out stream. Go to the Property Editor Window of the Mixer. Locate Results tab.
Navigate to Compounds >> Amounts >> Mixture.	Navigate to Compounds >> Amounts >> Mixture.
	We can verify that its composition is as expected. It has equimolar composition.
	Now let us insert a Gas-Liquid Separator.
	It can be used to simulate VLE, LLE and VLLE systems.
Point to Separators/Tanks	At the bottom of the main simulation window, go to Separators/Tanks.
Click and drag Gas-Liquid Separator to the flowsheet	From the displayed list, drag and drop a Gas-Liquid Separator to the Flowsheet.
Click SEP-004	Click on the Gas-Liquid Separator named SEP-004.
	Now we will connect two output streams to the Separator.
Click and drag Material Stream to the flowsheet	Drag and drop a Material Stream to the flowsheet area. We will leave that stream as unspecified, as its properties are to be calculated.
Type Vapour	We will name it as Vapour.
Type Liquid	Similarly, add another material stream and name it as Liquid.
Click Separator Vessel	We are now ready to specify the Gas-Liquid Separator. So let’s click on it.
Point to the tab on the left.	On the left, we can see a tab displaying properties related to the Gas-Liquid Separator.
Go to Connections Click on drop down arrow against Inlet Stream 1 Select mixer-out.	Under Connections, click on the drop-down against Inlet Stream 1. Select mixer-out.
Point to the other Inlet Streams	We can now connect a total of five more input streams. The Separator mixes all the streams and separates.
Cursor to the Energy Stream section	It also has a port to connect an Energy Stream.
Click on the drop down against Vapour Stream Select Vapour.	Click on the drop-down against Vapour Stream and select Vapour.
Click on the drop down against Light Liquid Stream Select Liquid.	Similarly, click on the drop-down against Light Liquid Stream. Select Liquid.
Click on Solve Flowsheet button.	Then click on Solve Flowsheet button on the toolbar.
	Now we will check whether the vapor and liquid are split properly in the separator.
Click on Vapour Point to Property Editor Window Hover mouse at Results	Now click on Vapour stream. From the Property Editor Window, locate Results section.
Navigate to Compounds >> Amounts >> Vapor.	Navigate to Compounds >> Amounts >> Mixture.
Point to the value	The mole fraction of Benzene is 0.55.
	We can do a check on the working of the Mixer also.
Click on Mixer Point to Property Editor Window Hover mouse at Results	Now click on mixer-out. From the Property Editor Window, locate Results section.
Navigate to Compounds >> Amounts >> Mixer.	Navigate to Compounds >> Amounts >> Vapor.
Point to the value	The mole fraction of Benzene is 0.55.
Click on File and Click Save As	Let us now save this file using the Save As option.
Type flow-end	I will save it as flow-end.
	Let's summarise.
Slide Number 7 Summary	In this tutorial, we have learnt to Simulate a mixer Follow it up with a flash separator and Give a two phase feed
	Here are some assignments for you.
Assignment 1 slide	The assignment in this slide has to do with mass balances. I use blue colour to indicate streams and equipment.
	Let us go to the next assignment.
Assignment 2 slide	You have to verify mole fractions as mentioned in this slide.
Assignment 3 slide	The third assignment has to do with the Separator. Recall that we mentioned that it could be used to mix streams. Remove the mixer and mixer-out and try it out. See if you get the same answers.
Assignment 4 slide	In the next assignment, you will do the separation at a higher temperature.
Click Separator Property Editor Window >> Calculation Parameters	Click on Separator. From the Property Editor Window, go to Calculation Parameters section.
Click on Override Sep. Temperature check box.	Select the Override Sep. Temperature check-box.
Type 100	In the resulting field, change the value to 100.
Click and drag Energy Stream to the flowsheet	Bring Energy stream from Object Palette to the flowsheet. Connect this stream to the Energy Stream of the Separator. Simulate and analyse your results.
Slide Number 8 About the Spoken Tutorial Project	Watch the video available at the following link. http://spoken-tutorial.org/ It summarizes the Spoken Tutorial project.
Slide Number 9 Spoken Tutorial Workshops	The Spoken Tutorial Project Team conducts workshops and gives certificates. For more details, please write to us.
Slide Number 10 Forum Slide Do you have questions in this Spoken Tutorial? Please visit this site Choose the minute and second where you have the question. Explain your question briefly. Someone from the FOSSEE team will answer them.	Please post your timed queries in this forum.
Slide Number 11 DWSIM Flowsheeting Project	The FOSSEE team coordinates conversion of existing flowsheets into DWSIM. We give honorarium and certificates for those who do this. For more details, please visit this site.
Slide Number 12 Lab Migration Project	The FOSSEE team helps migrate commercial simulator labs to DWSIM. We give honorarium and certificates for those who do this. For more details, please visit this site
Slide Number 13 Acknowledgements	Spoken Tutorial and FOSSEE projects are funded by NMEICT, MHRD, Government of India.
Slide Number 14 Thanks	We thank the DWSIM team for making it as an open source software. 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

Kaushik Datta