The convective heat transfer coefficient, h, relates the amount of heat transferred between a moving bulk fluid—liquid or gas—and a bounding surface. It is the constant of proportionality and is equal to the heat rate per unit area per temperature difference. Use only real numbers and be sure the system of units you are working in is consistent with the rest of the model.

If you do not import an externally computed convection coefficient, you must specify a convection coefficient for the software to use. Using either empirical data or data of your own, enter a positive real number for the convection coefficient of the convection condition you are defining.

Convection coefficient units depend on the entity you select and the model type, as noted in the following table: