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01/09/2007
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The latest version of CD-adapco’s Star-CCM+ computational fluid dynamics software (v2.08) has an improved meshing engine that delivers higher quality meshes up to 20% faster in some cases than its predecessor.There are also enhancements to the simulation of problems involving heat transfer between liquids, gases and solids.
Engineers are typically only interested how fluid temperatures influence the thermal loading of nearby structures. Conjugate heat transfer (CHT) analysis allows them to account for conduction through solids and to calculate the resulting temperature distribution within them. Until now, the largest obstacle to performing CHT simulations of complex structures – such as internal combustion engines – has typically been encountered while trying to create a computational mesh that accurately represents both solid and coolant geometries.
V2.08 overcomes this obstacle with a robust meshing methodology that allows users to automatically generate meshes of both the fluid and solid geometries, no matter how complex. This approach ensures that a conformal mesh is maintained at solid-fluid interfaces, guaranteeing one-to-one connectivity between cells at either side of the boundary. And it removes the need for mapping or interpolation between the physical domains.
The new version of Star-CCM+ also has an enhanced capability for simulating both long- and shortwave radiation. Using automatic parallel view-factor calculation, simulations involving radiation heat-transfer are practical. For example, component temperatures under the hood can be simulated and, in combination with mannequins and dedicated thermal comfort engineering post-processing tools, it is said to be an ideal tool for analysing occupant comfort in automotive cabins.
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Author
Roger Bishop
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Copyright European Automotive Design.
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