The heat transfer coefficient of convection cannot be calculated by a single analytical equation. How you calculate this value depends on the characteristics of the fluid itself (viscosity, flow speed, etc) as well as the geometry is is flowing against (vertical wall vs horizontal wall, flow down a tube, etc).

The Wikipedia page for Heat transfer coefficient goes over how to calculate the coefficient for a few different situations.

Hi Kalyani,

The heat transfer coefficient of convection cannot be calculated by a single analytical equation. How you calculate this value depends on the characteristics of the fluid itself (viscosity, flow speed, etc) as well as the geometry is is flowing against (vertical wall vs horizontal wall, flow down a tube, etc).

The Wikipedia page for Heat transfer coefficient goes over how to calculate the coefficient for a few different situations.