Modeling ducts with 1D elements

• Use a Duct type of 1D duct mesh collector to solve for velocity, pressure, and density in addition to the mass flow and temperature. Define the cross section of the duct.

• Use a Duct with Mass Flow type of 1D duct mesh collector to solve only for mass flow and temperature.

• Use a Duct Axisymmetric or Duct with Mass Flow Axisymmetric type of 1D duct mesh collector to model annular ducts using axisymmetric curves in a thermal model that has both axisymmetric elements and non-axisymmetric elements. The axisymmetric elements cannot share nodes with the non-axisymmetric elements.

How do I

Create a duct flow network

Create a thick wall duct flow network

Create a pressureless duct network

Create a duct flow network and model heat transfer using 2D shells

Create a duct flow network and model heat transfer using 3D solid elements

Connect the duct network to the 3D flow domain

Learn more

1D duct flow networks

Duct analysis workflow

Duct Flow Boundary Conditions

1D meshing

Ensuring consistent 1D element orientation during mesh creation

Look up more details

Modeling ducts and their walls with 1D elements

Modeling ducts with 1D elements and their walls with 2D elements

Modeling the interface between ducts and 3D fluid elements

Modeling ducts inside 3D solid elements

Understanding ducts and area definition

Solver calculation for duct elements

Solver calculation for duct with mass flow elements

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

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

Modeling ducts with 1D elements, Simcenter 3D 2021.1 Series

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