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Panel

Author: Rajesh Bhaskaran & Yong Sheng Khoo, Cornell University

Problem Specification
1. Pre-analysis & Start-up
2. Geometry
3. Mesh
4. Setup (Physics)
5. Solution
6. Results
7. Verification & Validation
Problem 1
Problem 2

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Display > Vectors...

Select Velocity under Vectors of and Velocity... under Color by. Set Scale to 0.4



 
Click Display.
 

newwindow
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Higher Resolution Image
https://confluence.cornell.edu/download/attachments/90741106/velocity-vector-result.jpg?version=1

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Info
titleTo include the lower half of nozzle, do the following:

 Display > Views...
Select centerline and click Apply

Info
titleWhite Background on Graphics Window

To get white background go to:
Main Menu > File > Hardcopy
Make sure that Reverse Foreground/Background is checked and select Color in Coloring section. Click Preview. Click No when prompted "Reset graphics window?"

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Let's now look at the Mach number

Display > Contours

Select Velocity... under Contours of and select Mach Number. Set Levels to 30.


 
Click Display.


newwindow
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Higher Resolution Image
https://confluence.cornell.edu/download/attachments/90741106/mach-contour-result.jpg?version=1

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Let's look at how pressure changes in the nozzle.

Display > Contours...

Select Pressure... and Static Pressure under Contours of. Use Levels of 30

Click Display.


newwindow
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Higher Resolution Image
https://confluence.cornell.edu/download/attachments/90741106/pressure-contour-result.jpg?version=1

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Let's look at the total pressure in the nozzle

Display > Contours...

Select Pressure... and Total Pressure under Contours of. Select Filled. Use Levels of 100.


 
Click Display.


newwindow
Higher Resolution Image
Higher Resolution Image
https://confluence.cornell.edu/download/attachments/90741106/totalpressure-contour-result.jpg?version=1

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Let's investigate or verify the temperature properties in the nozzle.

Display > Contours...

Select Temperature... and Static Temperature under Contours of. Use Levels of 30.


 
Click Display.

newwindow
Higher Resolution Image
Higher Resolution Image
https://confluence.cornell.edu/download/attachments/90741106/temperature-contour-result.jpg?version=1

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Let's look at the total pressure in the nozzle

Display > Contours...

Select Temperature... and Total Temperature under Contours of. Select Filled. Use Levels of 100.


 
Click Display.

newwindow
Higher Resolution Image
Higher Resolution Image
https://confluence.cornell.edu/download/attachments/90741106/totaltemperature-contour-result.jpg?version=1

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Let's look at the pressure along the centerline and the wall.


 
Plot > XY Plot

Make sure that under Y-Axis Function, you see Pressure... and Static Pressure. Under Surfaces, select centerline and wall. Click Plot.


newwindow
Higher Resolution Image
Higher Resolution Image
https://confluence.cornell.edu/download/attachments/90741106/pressure-plot-result.jpg?version=1

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It is good to write the data into a file to have greater flexibility on how to present the result in the report. At the same XY Plot windows, select Write to File. Then click Write... Name the file "p.xy" in the directory that you prefer.
 
Open "p.xy" file with notepad or other word processing software. At the top, we see:
 

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Let's plot the variation of Mach number in the axial direction at the axis and wall. In addition, we will plot the corresponding variation from 1D theory. You can download the file here: mach_1D.xy.Plot > XY PlotUnder the Y Axis Function, select Velocity... and Mach Number.

Also, since we are going to plot this number at both the wall and axis, select centerline and wall under Surfaces.

Then, load the mach_1D.xy by clicking on Load File....



Click Plot.


newwindow
Higher Resolution Image
Higher Resolution Image
https://confluence.cornell.edu/download/attachments/90741106/mach-plot-result.jpg?version=1

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Save this plot as machplot.xy by checking Write to File and clicking Write....

Go to Step 7: Verification & Validation

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