I would really like a logical explanation for some of the factors that affect convective heat transfer coefficient. I have only found mathematical one. For example: 1) Properties of the fluid: 1)Velocity: My professor said that the lower the velocity the more time the fluid gets to interact with the surface so higher h. But in all graphs velocity is proportional to the coeff. 2)Viscosity 3) Specific heat 4) conduction coeff: The higher the better because the fluid can spread heat more. 2) Geometric shape of the surface: Flat, arc, spherical..etc. (Question on how they diff from other and who has the highest h) 3) The angle of the surface: Vertical, Horizontal, or with an angle. (Question on how they diff from other and who has the highest h) 4) Laminar or turbulence flow: Turbulence flow has the higher h because the interaction between the fluid is higher so heat is spread faster, But in laminar the only way heat can cross is by conduction between the layers or molecules effusion. 5) Type of convection: Free or forced convection. Sorry I must be asking a lot but it would help overall to have a thread like this since I didnt find any sources online.