Thermal Stress from Mapped Temperature Data: Exhaust Manifold

This tutorial demonstrates how to perform thermal stress analysis in Simcenter STAR-CCM+.

In this simulation, you study the thermal expansion of an exhaust manifold in response to hot gas entering the inlets. The simulation incorporates both conjugate heat transfer (CHT) and stress analysis.

In Simcenter STAR-CCM+, you can combine the advantages of the finite volume (FV) and the finite element (FE) methods together in the same simulation. In the first part of the tutorial, to compute the steady-state temperature distribution throughout the manifold, you run a finite volume conjugate heat transfer analysis. In the second part of the tutorial, you map the temperature data onto a finite element model of the manifold for stress analysis.

As you are seeking the static/steady-state solutions in the fluid and the solid, it is both convenient and accurate to initially solve for the fluid flow and the conjugate heat transfer, and then solve for the solid displacement while holding the thermal field fixed.

The simulation strategy, including the model geometry and assumptions, is summarized below.