Example: Creating a Case Study in Aspen HYSYS analyzing how to vary the mass flow.
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Products:
Aspen HYSYS
Last Updated:
03-Jan-2024
Last Updated:
03-Jan-2024
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Article ID:
000101753
Article ID:
000101753
Primary Subject:
Attachments (1)
Attachments (1)
Problem Statement:
Example: Creating a Case Study in Aspen HYSYS analyzing how to vary the mass flow.
Solution:
The Case Study tool allows you to monitor the steady state response of key process variables to other changes in your process. It contains built-in reporting tools to easily present your results in tabular or graphical formats.
In this example, a recombination of test separator data creates a crude oil stream that is mixed with a light gas stream to recreate a source production fluid. This fluid is then sent to two stages of separation so that the gas and liquids are separated at two different pressure levels.
To create the Case Study follow the steps:
Click the Case Studies button in the Home tab of the HYSYS ribbon or from the Navigation Pane select the Case Studies folder and click the add button.
On the
Case Study
form, select the
Variables Selection
tab. In the
Independent Variables
section, click the Find Variables button.
Note
:
Dependent variables
are calculated by HYSYS and are shown in black numbers and the
independent variables
are specified by the user and are shown in blue numbers.
The Variable Navigator view appears, allowing you to select from the Input variables. Select
HP Gas
|
Pressure
and click Add to add the variable. Then click Done to close the window.
In the Dependent Variables section, click the Find Variables button. Select
HP Gas
|
Mass Flow
and click Add.
Note
: You can add more than one dependent variable and edit the current values for each variable in the Current Values column.
You should now have the variables listed in the Case Study, the first one being an Independent variable, and the second as Dependent.
In the
Case Study Setup Tab
, you can define the calculation states of your independent variable you wish to manipulate. In this case, HP Gas Pressure is the independent variable and it will be evaluated over the following range:
Independent Variable
Value
Start
2068 kPa (300 psia)
End
3447 kPa (500 psia)
Step Size
344.7 kPa (50 psi)
On the
Case Study Setup
tab of the Case Study form, from the
Case Study Type
drop-down list, select
Nested
and then click the
Run
button to calculate the Case Study.
After the Case Study runs, you can click on the
Results
tab to view the tabular results of the Case Study.
Select the
Plots tab
to view a graphical representation of the results.
Attachments
Filename
Date Added
Case Study.hsc
03-Jan-2024