# How to plot u+ Vs Y+ graph?

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 November 19, 2012, 02:30 How to plot u+ Vs Y+ graph? #1 New Member   Taryk Join Date: Nov 2012 Posts: 9 Rep Power: 6 I want to plot a graph between u+ and Y+. I m not able to get a plot, can anyone help me out in this.. Regards TQIM

November 19, 2012, 06:52
#2
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Aqua
Join Date: Oct 2011
Posts: 96
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Quote:
 Originally Posted by TQIM I want to plot a graph between u+ and Y+. I m not able to get a plot, can anyone help me out in this.. Regards TQIM

 November 19, 2012, 11:39 #3 Senior Member   Reza Join Date: Mar 2009 Location: Appleton, WI Posts: 116 Rep Power: 10 What I usually do is to plot velocity as a function of wall distance (define a line probe to get the plot) and export it to excel, and use excel to non-dimensionalize the plot to get u+ vs y+. You will need the shear stress at the wall though, and you can get it by a point probe, or just using the line probe that you have and plotting the wall shear stress on that line. You will get a single value at the wall and zeros every where else. I don't know if this answered your question or not. mjthomp3 likes this.

July 28, 2016, 23:24
#4
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AZ
Join Date: Jan 2014
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Quote:
 Originally Posted by triple_r What I usually do is to plot velocity as a function of wall distance (define a line probe to get the plot) and export it to excel, and use excel to non-dimensionalize the plot to get u+ vs y+. You will need the shear stress at the wall though, and you can get it by a point probe, or just using the line probe that you have and plotting the wall shear stress on that line. You will get a single value at the wall and zeros every where else. I don't know if this answered your question or not.
what else do you do from there? I did what you said so far but am not getting the correct plot.....

July 29, 2016, 10:46
#5
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Reza
Join Date: Mar 2009
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Quote:
 Originally Posted by mjthomp3 what else do you do from there? I did what you said so far but am not getting the correct plot.....
What do you get when you follow the steps? Can you give a little bit more detail? I haven't done this for a while now, so can't remember exactly if there were any tricks or something to watch for.

 July 29, 2016, 13:42 Check out the STEVE Portal #6 New Member   Paul Hancock Join Date: Mar 2009 Location: Bellingham, WA Posts: 24 Rep Power: 10

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