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Convective Heat Transfer

Heat transfer by convection


Thermal Elements

  • Convective Heat Transfer block


The Convective Heat Transfer block represents a heat transfer by convection between two bodies by means of fluid motion. The transfer is governed by the Newton law of cooling and is described with the following equation:



QHeat flow
kConvection heat transfer coefficient
ASurface area
TA,TBTemperatures of the bodies

Connections A and B are thermal conserving ports associated with the points between which the heat transfer by convection takes place. The block positive direction is from port A to port B. This means that the heat flow is positive if it flows from A to B.


To set the priority and initial target values for the block variables prior to simulation, use the Variables tab in the block dialog box (or the Variables section in the block Property Inspector). For more information, see Set Priority and Initial Target for Block Variables.



Surface area of heat transfer. The default value is 0.0001 m^2.

Heat transfer coefficient

Convection heat transfer coefficient. The default value is 20 W/m^2/K.


The block has the following ports:


Thermal conserving port associated with body A.


Thermal conserving port associated with body B.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Introduced in R2007b