Thermal Convecting Zone

Use the Thermal Convecting Zone load to define the heat transfer for a part of the model that is convecting to a fluid at a known temperature. You specify the fluid material or multiple fluid material and its temperature directly in the load.

In the Thermal Convecting Zone dialog box, you can:

• Define the pressure at the model surface.

• Define heat transfer characteristics.

• Define the area correction for internal edges.

• Account for swirl effect in heat transfer due to rotating machinery.

Supported variables and functions

The following table lists the independent variables and auto-generated expressions for the Thermal Convecting Zone quantities that you can define using fields and expressions.

Quantity	Variables	Auto-generated expressions
TemperaturePressureSwirl VelocitySwirl RatioRelative Temperature Difference	TimeSpatial variablesTime, spatial variables	contact_pressureNOTEfluid_temperaturegap_distanceNOTEheat_flow_ratemass_flow_ratenxnynzpressureradiusrotational_speedtemperaturetemperature_differencethermal_capacitancethicknesstimexyz
Heat Transfer CoefficientHeat FluxArea Correction Factor****Area Override	Heat flow rateSpatial variablesNOTETemperatureTemperature differenceThermal capacitanceTimeTemperature, spatial variablesNOTETemperature difference, spatial variablesNOTETime, spatial variablesNOTE

In expressions, you can also use all built-in functions that are listed in Mathematical functions in expressions and Thermal-flow functions in expressions. You can also enter the CFD coupling functions listed in Exchanging data between solvers at coupling time when you perform a coupled thermal-structural-flow analysis.

Where do I find it?

Application	Pre/Post
Command Finder	Thermal Convecting Zone
Simulation Navigator	Right-click the Load Container node→New Load→Thermal Convecting Zone

Learn more

Inputs to expressions

Displaying data summary in HTML

Look up more details

Total temperature effects

Multiple Fluid materials

Auto-generated expressions

HTML summary data

Quick links

Simcenter 3D Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal boundary conditions

Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

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Thermal Convecting Zone, Simcenter 3D 2021.1 Series

© 2020 Siemens

Applicable to

Swirl Velocity

,

Swirl Ratio

, and

Relative Temperature Difference

only.

N/A for

Temperature

and

Pressure

.

N/A for

Area Override

.

N/A for

Area Override

.

N/A for

Area Override

.

N/A for

Area Override

.

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