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

My name is Kannan Moudgalya

How to select chemical components

How to choose a thermodynamic package

How to choose units and values and

How to specify a material stream

But this process is identical in Linux, Mac OS X and FOSSEE on ARM

You should have access to DWSIM

When DWSIM is opened, you see a startup window, such as this

If a simulation wizard appears, cancel it

On the top left, locate a field called Simulation

Press this button

In some earlier versions, this pop-up opened automatically

To address this, I will zoom in on the relevant portion of this screen only

I have now rearranged the screen for better readability

Benzene appears in two rows

We are interested in the entry that has DWSIM as the database

We will explain in another tutorial the significance of other databases

which is on the right hand side which we will see shortly

You can see that Benzene is now selected

I shall let you see it by shifting the pop up window to the left

Let us select this

Let us add

You can see that the component selection is completed

Let us go to the next slide

Covering the theory behind this slide is beyond the scope of this tutorial

As Benzene and Toluene form an ideal solution, we can choose Raoult's law

Locate the thermodynamics tab on the left hand side

Click on it

A sub-menu appears in the white space above.

To see this, let me shift the pop-up to the left.

Click on it.

We will now create a material stream

It has a large collection of many useful chemical engineering objects

You can scroll it and see what all are available

Click it and drag it to the flowsheet

You may leave it anywhere on this canvas

You can also move the stream to another place later, if required

You can choose one of the other possibilities

But, I shall leave it as it is

Press down arrow

Click Apply

If the total is not 1, DWSIM normalises the entries, so that the total becomes 1

But this may give some unpredictable values at times

So, you yourself may want to ensure that the total comes to 1

Let us click this menu and choose CGS System

This window consists of Properties and Appearance tabs

There are many ways to complete the specification of a material stream

I shall leave it as it is.

I will by hovering the mouse over Temperature, we see the units as degree Celsius

It is an editable field Let me delete it and enter 30

I shall leave it at 1 atmosphere.

we can specify mass flowrate or molar flowrate or volumetric flowrate.

. It is possible to use a combination of units, such as CGS and SI.

Now the stream is fully defined.

As I am not happy with this automatically generated name, let me change it

The Appearance tab is used to modify the visual appearance of the stream

Click on the Name again.

We will build on this material stream in the upcoming tutorials.

We go to the next slide.

We defined a material stream.

Chose chemical components.

Chose the property estimation package.

Completed specifications.

Assigned values and units.

Specified temperature, pressure and flow rate.

Pointed out many different options.

Choose Benzene and Toluene mole fractions that do not add up to 1.

Check how DWSIM normalises when you press apply.

Check what the normalise button does when the total is not 1.

DWSIM automatically displays equivalent flow rates in other units.

Check if these values are consistent.

Carry out the previous assignments for this stream also

This brings us to the end of this tutorial

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Give Certificates.

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I want to thank you the listener for joining me in this tutorial, goodbye.