CIMdata PLM Industry Summary Online Archive
27 June 2012
Product News
Powerful New Engine Simulation Capabilities in STAR-CD v4.18
CD-adapco is pleased to announce the release of v4.18 of STAR-CD and es-ice IC Engine simulation software. V4.18 brings powerful new capabilities in both the preprocessing and solver environments.
In es-ice, the user is now able to automatically generate 2-dimensional templates for the in-cylinder mesh, substantially speeding up the time to generate an optimum 3-dimensional mesh, and to be able to refine or coarsen the mesh with a single command. This is particularly powerful for advanced studies, such as comparing RANS with LES calculations where different mesh densities are desirable. Additional options are now available for the spray-adapted mesh which can be used to enhance accuracy in spray simulations.
New options are available in STAR-CD for including detailed chemistry within combustion calculations. Together with our partner DigAnaRS, it is now possible to use detailed chemistry mechanisms within DARS to either generate libraries directly for the ECFM-3Z combustion model or to use those mechanisms with the DARS-TIF flamelet-based model. This is an extremely powerful capability and, although CD-adapco and DigAnaRS will provide an ever-increasing range of chemistry mechanisms, either the user or a 3rdparty are also able to use their own chemistry mechanisms within this framework. Thus, users’ proprietary chemistry mechanisms for any fuel can be used with the structural flame models available in STAR-CD.
An additional advantage of the new detailed chemistry option is that E-fuels, B-fuels and dual-fuel engines can be simulated correctly from fuel injection, evaporation and mixing through to combustion with full detailed chemistry.
There are also substantial enhancements to both the ECFM-CLEH combustion model and the ELSA spray model, both of which potentially offer a superior approach for diesel combustion.
Other modeling enhancements include improvements to the spray impingement model to take better account of wall temperatures above the liquid saturation temperature and Leidenfrost effects and options to model real gas compressibility using appropriate equations of state. Both of these enhancements address trends in engine design where spray-wall impingement and higher cylinder pressures are prevalent.
In addition to the release of STAR-CD v4.18, the Knowledge Base has also been updated to reflect any change in behaviour over previous versions. Details can be found at CD-adapco’s Customer Service Centre website https://support.cd-adapco.com. Further information for users on how to use this or about specific changes can be obtained by contacting your DSE.
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