Home / Software Posts / Thermal CFD and Stress Analysis of an Exhaust Manifold

Thermal CFD and Stress Analysis of an Exhaust Manifold

Bentley Expert Profile Image

Bentley Expert

Share

ADINA is a unique tool to perform coupled CFD and structural analyses, and we are strengthening the program continuously for such applications. Here we focus on the analysis of a manifold and consider the turbulent fluid flow through the manifold, the temperatures in the fluid and the structure, and the stresses in the structure.

Thermal CFD and Stress Analysis of an Exhaust Manifold

A particular capability needed here, with the meshes used, is the automatic coupling of the temperature between totally different meshes.

The figures below show the model of the fluid and solid, and some temperature and stress results. The movie above shows some velocity results in the outlet. The model contains a total of about 5 million elements. For the fluid the k-omega turbulence model is used. The Re, Pe and Pr numbers are Re = 0.74 x 105, Pe = 0.54 x 105, Pr = 0.73.

Mesh used for the complete model

Mesh used for the complete model

 

Detail showing mesh mismatch

Detail showing mesh mismatch

 

Plot of temperature in the fluid and solid

Plot of temperature in the fluid and solid

 

Plot of effective stress in the solid

Plot of effective stress in the solid

 

Plot of pressure in the fluid

Plot of pressure in the fluid

In the model, the contact and gluing algorithms are used.

This model was solved with ADINA, version 8.5, because we have implemented some significant computational improvements that are used in this solution.

Relevant Tags

Every structure has its own unique natural frequency exhibited while disturbed by some external dynamic force. The external dynamic force ...

Each material has unique damping properties. If you want to analyze a structure composed of both steel and concrete you ...

The most common type of retaining wall section is tapered with a stepped pattern. You can model the retaining wall ...