Coupled thermal, structural, and CFD simulation using RadTherm and HyperWorks

Many automotive applications involve complex heat transfer in which all three modes (conduction, convection, and radiation) are important. The high thermal loads generated in these cases (e.g. engine waste heat, braking heat) can also cause thermal stress in the parts involved. Coupled thermal and structural analysis can be used to predict potential problems due to either material temperature thresholds or mechanical stresses. RadTherm is a fast transient thermal solver for complex, large scale thermal models. The Surface and volume mesh for each analysis is exported from HyperMesh to RadTherm, which predicts the temperature distribution on the mesh. For applications involving complex fluid flow, an AcuSolve CFD model is coupled with the RadTherm model to predict convection conditions and improve the accuracy of the thermal simulation.  Once RadTherm thermal model is complete temperature results are then used as boundary conditions for the RADIOSS structural simulation.  The end result is a coupled simulation that allows for quickly finding problem areas in the design and comparing alternative designs. RadTherm is the standard in the vehicle and transportation industry and common applications will be discussed during this presentation.


The Author

Antti Jussila