# Convective Heat Transfer

Heat transfer by convection

Thermal Elements

## Description

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:

`$Q=k·A·\left({T}_{A}-{T}_{B}\right)$`

where

 Q Heat flow k Convection heat transfer coefficient A Surface area TA,TB Temperatures 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.

## Dialog Box and Parameters

### Parameters Tab

Area

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.

### Variables Tab

Use the Variables tab to set the priority and initial target values for the block variables prior to simulation. For more information, see Set Priority and Initial Target for Block Variables.

## Ports

The block has the following ports:

`A`

Thermal conserving port associated with body A.

`B`

Thermal conserving port associated with body B.