Convection load in the Simulation workspace

Convection is the transfer of energy between a fluid (typically the surrounding air) and a solid.

Study Types that offer this load option
Thermal stress study
Thermal study

To properly account for convection to the world around a model, the convective heat transfer coefficient is key. Many factors can affect the coefficient, from velocity of the surrounding fluid to what the surrounding fluid is. Computers often use fans for cooling, which increases the velocity of the fluid and therefore increases the h value. The higher h value in turn reduces the temperature. The physical properties of the fluid also change the coefficient. To keep the same frame of reference, some computers use liquid cooling instead of air. The h values from a liquid tend to be more efficient (higher) than a gas.

A standard natural convection coefficient to air is in the range of 5-25 W/m^2*K. Many examples can be found online for different fluids or conditions.

Example

• Transfer of heat from a brake pad to the ambient air