DWSIM/C2/Introduction-to-Flowsheeting/English-timed
From Script | Spoken-Tutorial
| 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. |
