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Contours of Velocity Magnitude

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Old   February 10, 2010, 12:15
Default Contours of Velocity Magnitude
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Hi

What exactly will be reported by FLUENTS

display----> Contours--->Velocity--->Velocity-Magnitude...

Is it the sum of all the three velocity(x,y,z) components?......

what if the flow is only in one direction say Y and X=0 and Z=0 ? What exactly is then reported my Velocity Magnitude


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Old   February 11, 2010, 02:20
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Maxime Perelli
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Velocity Magnitude = sqrt (Ux**2 + Uy**2 + Uz**2)
If Uy=Uz=0, then VM = sqrt(Ux**2)=Ux
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Old   February 11, 2010, 06:13
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thank you max

this explanation is very clear.....

i can see Ux Uy Uz (X-Velocity,Y-Velocity etc...) distinctly .......i mean i can visualize these three components clearly with various contour levels and find velocity variations in my domain.......but when I switch to "Velocity Magnitude" in contour display option ...most of my domain shows deep blue color which is close or equal to 0 m/s......

Does this mean that i do not have any resultant velocity at the end? or doest it mean the resultant velocity is a result of your explanation above.....
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Old   February 12, 2010, 02:15
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you should have a place with high velocity in comparison with all your domain. Modify the scale of the VM
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Old   December 20, 2012, 13:39
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What is ment by Modify the scale of velocity magnitude? do you kindlly mean to change the velocity to a higher value? whats if the velocity is an inlet velocity boundary condition?

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Old   January 3, 2013, 02:14
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Quote:
Originally Posted by Al-Hashimi View Post
What is ment by Modify the scale of velocity magnitude? do you kindlly mean to change the velocity to a higher value? whats if the velocity is an inlet velocity boundary condition?
I meant: modify upper scale limit (max value)
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