Validation of Nusselt Number (Nu) for Pipe Flow | Ansys Fluent

In this video we have evaluated the Numerical Solution of Nusselt by ANSYS fluent and validated that value with the Exact Solution of Nusselt Number by knowledge of Heat Transfer.
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Chapters :
0:00 - Introduction
0:37 - Step 1 (Geometry)
2:35 - Step 2 (Meshing)
4:58 - Step 3 (Y-plus Concept for First Cell Height)
6:35 - Step 4 (Mesh Quality Check)
7:22 - Step 5 (Launching Fluent)
11:46 - Step 6 (Solution Initialization)
13:20 - Step 7 (Results in CFD Post)
14:28 - Step 8 (Calculation of Nusselt Number)
15:25 - Step 9 (Validation of Numerical and Exact Nusselt Number)

[@mehdimohsenizadeh3445]

thanks a lot

[@khebabhafsi4122]

Turbulent intensity @♦10:04
I think you should let it 5% its equal 0.05 or after your calculation you set it 4 % its 0.046

[@MA_H313]

yes, I would to confirm that, it should be just 4 NOT 0.04

[@faragayad4513]

That is great, I am asking why don't compute the reference value from the inlet to activate the new value of density and viscosity. Thank you so much.

[@muhammadshariqkhan5405]

They are interested in Heat transfer coefficient and in its formula density and viscosity are not present so no need to change these values. Density is important when calculating drag because in drag formula or later or formula we have density

[@shattaki1]

can you tell me for the analytical and numerical validation For LAMINAR FLOW IN FLUENT

[@khebabhafsi4122]

High-turbulence case: High-speed flow inside complex geometries like heat-exchangers and flow inside rotating machinery (turbines and compressors). Typically the turbulence intensity is between 5% and 20%
Medium-turbulence case: Flow in not-so-complex devices like large pipes, ventilation flows etc. or low speed flows (low Reynolds number). Typically the turbulence intensity is between 1% and 5%
Low-turbulence case: Flow originating from a fluid that stands still, like external flow across cars, submarines and aircrafts. Very high-quality wind-tunnels can also reach really low turbulence levels. Typically the turbulence intensity is very low, well below 1%.

[@khebabhafsi4122]

you have to se turbulent intensity is by %

[@Skydring]

hello, do u have an email so i can reach u for some questions?