Speed Velocity Vector

iyiy · March 9, 2016, 05:43

HI..just want to ask your opinion on how to solve this.
the case is, i have run a simulation for a basement to see the speed velocity vector of the air, from the fresh air & exhaust duct.
the contours also shows good result but on closer view, there is no velocity vector from the duct.
I've tried to reset the setting, still no good.

scipy · March 9, 2016, 06:17

Are you plotting contours or vectors? They're two distinctly different things in Fluent. If contours look good (logical, expected), then you should have no problems with vectors.. as long as you're actually displaying vectors.

iyiy · March 10, 2016, 05:40

Im trying to plot the speed vector.
The contour is good, but on close inspection (vector), it seems as the fresh air duct has no air coming out from the duct.

scipy · March 11, 2016, 07:22

Did you try doing a flux report on the face of the inlet? Try to do a mass flow rate report and see if it's a positive value.

Also, a screenshot of the vectors and the problem might help.

March 9, 2016, 05:43	Speed Velocity Vector	#1
iyiy New Member Anonymous Join Date: Mar 2016 Posts: 2 Rep Power: 0	HI..just want to ask your opinion on how to solve this. the case is, i have run a simulation for a basement to see the speed velocity vector of the air, from the fresh air & exhaust duct. the contours also shows good result but on closer view, there is no velocity vector from the duct. I've tried to reset the setting, still no good.

March 9, 2016, 06:17		#2
scipy Senior Member Alex Pasic Join Date: Aug 2011 Location: Croatia Posts: 199 Rep Power: 16	Are you plotting contours or vectors? They're two distinctly different things in Fluent. If contours look good (logical, expected), then you should have no problems with vectors.. as long as you're actually displaying vectors. __________________ If you're in need of some free quality CFD video tutorials - check out SiriusCFD @ YouTube Last edited by scipy; March 11, 2016 at 17:29.

March 11, 2016, 07:22		#4
scipy Senior Member Alex Pasic Join Date: Aug 2011 Location: Croatia Posts: 199 Rep Power: 16	Did you try doing a flux report on the face of the inlet? Try to do a mass flow rate report and see if it's a positive value. Also, a screenshot of the vectors and the problem might help. __________________ If you're in need of some free quality CFD video tutorials - check out SiriusCFD @ YouTube Last edited by scipy; March 11, 2016 at 17:30.

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March 10, 2016, 05:40		#3
iyiy New Member Anonymous Join Date: Mar 2016 Posts: 2 Rep Power: 0	Im trying to plot the speed vector. The contour is good, but on close inspection (vector), it seems as the fresh air duct has no air coming out from the duct.