About Nusselt number and velocities
 

Hello CFD Friends, hope ur doing well :)

well , i am simulating natural convection using Fluent 6.3 ,i get the right average nusselt number value for example for 10^3 : Nu = 1.118
same on the benchmark (1.118) but the problem is the dimensionless velocities Vx(in the x direction) and Vy(in the y direction) are not the same for example i get vy = 19.32 but on the benschmarks (19.61)!!!!
please where is the problem ,let me know please

All the best :)
Thank u in advance