Solver calculation for duct with mass flow elements

Because no cross section is defined for 1D duct with mass flow elements, the thermal solver does not calculate pressure and fluid resistance. The thermal solver only calculates the mass flow, , and the temperature due to convection with the thermal elements.

The solver calculates the mass flow on 1D duct with mass flow elements that do not have a specified mass flow, by minimizing mass flow imbalances at junctions. If a given junction point has a remaining mass flow imbalance, the solver adds a compensating mass flow injection or loss at this junction. The temperature of the added mass flow, Tcalc, is the calculated temperature at the junction. Tin is the temperature of the fluid at the inflow.

There is only convection through 1D duct with mass flow elements. There is no conduction.

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 with 1D elements

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

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

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

Solver calculation for duct with mass flow elements, Simcenter 3D 2021.1 Series

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