Duct Convection Correction modeling object

Use the Duct Convection Correction modeling object to correct the convective heat transfer coefficient that you specify when creating the Convection Coupling type of the Thermal Coupling — Convection simulation object. The Duct Convection Correction modeling object allows you to locally correct the convective heat transfer coefficient in a duct with mass flow network.

The heat transfer coefficient, h0, is corrected using the following equation:

where:

• C is the specified multiplier.

• Twall is the temperature of the convecting surface.

• Tfluid is the temperature of the fluid in the ducts.

• Tref is the specified reference temperature.

• r and d are the specified temperature ratio exponent and temperature difference exponent, respectively.

You can store your duct convection corrections in a correction catalog. The correction catalog is stored in the correction.xml file. Use the Correction Catalog option to add the parameters in the Duct Convection Correction dialog box.

Note:

The correction.xml file must be stored in the same folder as the other Simcenter 3D Thermal/Flow, Simcenter 3D Electronic Systems Cooling, and Simcenter 3D Space Systems Thermal catalog files. The location of the catalog folder is, by default, the [software_installation]\NXCAE_extras\tmg\if\catalogs folder or the folder specified by the MAYA_TMG_CATALOG_DIR environment variable.

Where do I find it?

Application	Pre/Post
Command Finder	Modeling Objects → Duct Convection Correction → Create
Menu	Insert → Modeling Objects → Duct Convection Correction → Create

How do I

Create a Thermal Coupling — Convection

Define a convection coupling between duct nodes and solid faces

Learn more

Thermal Coupling — Convection types

Across gap coupling convection correlations

Inputs to expressions

Free convection correlations

Forced convection correlations

Specifying a Coupling Resolution

Using the Only Connect Overlapping Elements option

Using the Overlap Projection Direction option

Look up more details

Duct Node Convection Coupling options

Auto-generated expressions

Customizing catalogs

Thermal Coupling — Convection dialog box

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

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Duct Convection Correction modeling object, Simcenter 3D 2021.1 Series

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