Heat Transfer Coefficient calculation in COMSOL Multiphysics

In this video, a laminar airflow through a tube is modeled using COMSOL Multiphysics. Simulations have been carried out to determine the heat transfer coefficient from Nusselt-number-based correlation functions and numerical computations.
Download parameters and variables here.
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[@mhd.7884]

Can you please help me in calculating avg nusselt no. In a 3d rectangular channel which is same as the one u have used just its rectangular? In which fluid is moving in turbulence and a constant flux is at base

[@chemsim3160]

Hello, pleas share your problem. You can reach at [e-mail]

[@hazimdirawi8852]

Hi, you calculated heat transfer coefficient for boundary 4 which is not a wall of flow or fluid?

[@chemsim3160]

Boundary 1 is symmetryy, boundary 2 and 3 are inlet and outlet, respectively, while boundary 4 is wall, which is exposed to heat flux qw.

[@user-yd5gc4xt9m]

Hi, can u help me to calculate a heat transfer coefficient for my thesis because i still confuse about this software? I already have the result after run the simulation

[@chemsim3160]

Hi.. sure..please share the problem

[@user-yd5gc4xt9m]

@@chemsim3160 Okay Sir, i will send the problem through your email. Thank you

[@zaky_mzg]

​@@chemsim3160 I need help too 🥺🥺