Contours of Velocity Magnitude

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 February 10, 2010, 11:15 Contours of Velocity Magnitude #1 New Member   sed Join Date: Feb 2010 Posts: 19 Rep Power: 16 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 thank you nice day __________________ Life is not always converging ... but u can relax

 February 11, 2010, 01:20 #2 Super Moderator     Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41 Velocity Magnitude = sqrt (Ux**2 + Uy**2 + Uz**2) If Uy=Uz=0, then VM = sqrt(Ux**2)=Ux __________________ In memory of my friend Hervé: CFD engineer & freerider

 February 11, 2010, 05:13 #3 New Member   sed Join Date: Feb 2010 Posts: 19 Rep Power: 16 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..... __________________ Life is not always converging ... but u can relax

 February 12, 2010, 01:15 #4 Super Moderator     Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41 you should have a place with high velocity in comparison with all your domain. Modify the scale of the VM __________________ In memory of my friend Hervé: CFD engineer & freerider

 December 20, 2012, 12:39 #5 Member   Osamah Ali Al-Hashimi Join Date: Jul 2012 Posts: 44 Rep Power: 13 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? Last edited by Al-Hashimi; December 21, 2012 at 17:33.

January 3, 2013, 01:14
#6
Super Moderator

Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41
Quote:
 Originally Posted by Al-Hashimi 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)
__________________
In memory of my friend Hervé: CFD engineer & freerider

 Tags contour plots, display, magnitude, velocity