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In order to increase the legibility of the graph, we will plot the data as a line rather than points. To turn on the line feature, click on Curves... in the Solution XY Plot menu. Then, set Pattern to ----, set the Weight to 2 and select nothing for Symbol, as shown below.
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Next, click Apply in the Curves - Solution XY Plot menu. Next, close the Curves - Solution XY Plot menu.
Now, the range of the y axis will be truncated, as we are not interested in far field velocity. Furthermore, the grid lines will be turned on. In order to implement these two changes. First click Axes in the Solution XY Plot menu. Next, select Y for Axis, deselect Auto Range, select Major Rules, select Minor Rules. Then, set Minimum to 0 and set Maximum to 0.12. Your Axes - Solution XY Plot menu, should look exactly like the image below.
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Then, click Apply in the Axes - Solution XY Plot menu. Now, select X for Axis and select Major Rules and Minor Rules, as shown below.
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Next, click Apply in the Axes - Solution XY Plot menu. Close the Axes - Solution XY Plot menu. Now, click Plot in the Solution XY Plot menu. You should obtain the following output. newwindow
https://confluence.cornell.edu/download/attachments/118771111/Plot5_Full.png
It is of interest to compare the numerical velocity profile to the velocity profile obtained from the Blasius solution. In order to plot the theoretical results, first click here to download the necessary file. Save the file to your working directory. Next, go to the Solution XY Plot menu and click Load File... and select the file that you just downloaded, BlasiusU.xy. Lastly, click Plot in the Solution XY Plot menu. You should then obtain the following figure.
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Lastly, select Write to File located under Options in the Solution XY Plot menu. Then, click Write.... When prompted for a filename, enter XVelOutlet.xy and save the file in your working directory.
Mid-Section Velocity Profile
Here, we will plot the variation of the x component of the velocity along a vertical line in the middle of the geometry. In order to create the profile, we must first create a vertical line at x=0.5m, using the Line/Rake tool. First, (Click) Surface < Line/Rake as shown in the following image. newwindow
https://confluence.cornell.edu/download/attachments/118771111/SurfLinRake_Full.png
We'll create a straight vertical line from (x0,y0)=(0.5,0) to (x1,y1)=(0.5,0.5). Select Line Tool under Options. Enter x0=0.5, y0=0,x1=0.5, y1=0.5. Enter line1 under New Surface Name. Your Line/Rake Surface menu should look exactly like the following image.
Next, click Create. Now, that the vertical line has been created we can proceed to the plotting. Click on Plots, then double click XY Plot to open the Solution XY Plot menu. In the Solution XY Plot menu, use the settings that were used from the section above, except select line1 under Surfaces and deselect any other geometry sections. Make sure that Write to File is not selected, then click Plot. You should obtain the following output.
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https://confluence.cornell.edu/download/attachments/118771111/Plot1M_Full.pnghttps://confluence.cornell.edu/download/attachments/118771111/Plot2M_Full.png
Once again, return to the Solution XY Plot menu, select Write to File, then click Write.... When prompted for a filename, enter XVelProfs.xy and save the file in your working directory.
Pressure Coefficients
In this section we will create contour plots for the pressure coefficients. Before we begin, we must first set the reference values for velocity. In order to do so, first click on Reference Values then set Compute from to inlet, as shown below.
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|^CompInlet_Full.png]
Next, click on Graphics and Animations, then double click on Contours, as shown below.
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https://confluence.cornell.edu/download/attachments/118771111/ContPlot_Full.pnghttps://confluence.cornell.edu/download/attachments/118771111/Contou_Full.png
Lastly, click Display in the Contours menu to generate the contour plot. You should obtain the following output.
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You can then zoom in to the leading edge of the plate with the wheel mouse button as shown below.
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Skin Friction Coefficient
Here, the skin friction coefficient will be plotted as a function of distance along the plate. First, click on Plots, then double click on XY Plot. In the Solution XY Plot menu deselect Write to File, select Position on X Axis, set X to 1 and set Y to 0. Then, set the box located underneath Y Axis Function to Wall Fluxes and set the box below to Skin Friction Coefficient. Next, select plate under Surfaces and deselect any other geometry features. At this point your Solution XY Plot menu should look the same as the following image.
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https://confluence.cornell.edu/download/attachments/118771111/SolXY3_Full.png
It is of interest to compare the numerical skin friction coefficient profile to the skin friction coefficient profile obtained from the Blasius solution. In order to plot the theoretical results, first click here to download the necessary file. Save the file to your working directory. Next, go to the Solution XY Plot menu and click Load File... and select the file that you just downloaded, BlasiusSkin.xy. Lastly, click Plot in the Solution XY Plot menu. You should then obtain the following figure.
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https://confluence.cornell.edu/download/attachments/118771111/SkinFric2_Full.png |
Lastly, select Write to File located under Options in the Solution XY Plot menu. Then, click Write.... When prompted for a filename, enter SkinFriction.xy and save the file in your working directory.
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