Face Attributes: Heat Transfer Convection Coefficient

Description

Assigns a convection coefficient to selected faces.

When the geometry is automeshed, plates created on the face will inherit the face convection coefficient attribute (see Plate Attributes: Face Convection Coefficient).

Models uniform heat flow via convection through the surface to or from an ambient environment. The attribute is paired with a convection ambient temperature attribute, which together define the heat flow rate.

Different convection coefficients can be defined on the -z and +z surfaces.

The coefficient can be scaled as a function of time and/or temperature.

Convection coefficient attributes are load case dependent.

Dialog

Value

Convection coefficient.

Factor vs Time table

A table that scales the coefficient as a function of time.

Applicable only to the transient heat solver.

Factor vs Temperature table

A table that scales the coefficient as a function of temperature.

Applicable only to nonlinear heat transfer analysis.

Surface

The surface on which the attribute is applied.

• +z

  Convection is on the +z surface.

• -z

  Convection is on the -z surface.

• Both

  Convection is on both surfaces.

Common Controls

• Components
• Equation Editor
• Retrieve from model
• Keep selection
• Scale / Add / Delete / Apply

Units

Energy/(Time×Length²×Temperature) (e.g., J/(s.m².K), Btu/(s.in².F)).

See Also

• Plate Attributes: Face Convection Coefficient
• Face Attributes: Heat Transfer Convection Ambient Temperature
• LAYOUTS: Tables