Convection Heat Transfer
Learning Objectives
Theory associated with force convection heat transfer coefficients.
Solution MethodologiesForced convection heat transfer analyses can be done using either Simulation Mechanical or Simulation CFD. 

Heat Transfer MechanismsThere are three basic mechanisms by which thermal energy is transferred. 

Governing EquationsThere are three continuum equations plus property relationships that control the motion of fluids. The three continuum equations are conservation of mass, the three momentum equations, and conservation of energy. The solution of these equations is complicated and requires software such as Simulation CFD. 

Laminar Boundary LayerThe boundary layer is a thin layer of fluid next to the surface in which velocity and thermal gradients are high. The boundary layer can be either laminar or turbulent. It is in this thin boundary layer that the fluid shear stresses are the highest because of high velocity gradients. The boundary layer is also important in convection heat transfer because it is in this thin layer that heat is transported from the surface. 

Coefficient CorrelationsThe determination of the heat transfer (local or average) for a given geometry and flow condition (laminar or turbulent) requires the use of experimental correlations. 