January 22nd, 2019
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With the latest updates on SimScale, we have released some exciting new features. Up to 96-core instances for customers, a sneak preview of the new highly automated hex-dominant meshing and Parasolid-based tessellation for high-quality CFD meshes are among the highlights.
Until now, SimScale users could only use up to 32-core machines. With the new release, we have added 64- and 96-core instances for SimScale customers. Those instances can have a huge impact, mainly for:
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The beta phase of the new hex-dominant meshing algorithm has started. The main focus for the development of this algorithm is to create quality meshes in a highly automated way, and also to make manual mesh tweaking an increasingly edge-case scenario. Therefore, the sizing of the mesh is mainly based on the geometrical properties of the CAD model. The algorithm is enabled for all SimScale users. You can contribute to the further development of this feature by adding your feedback in our forum thread.
As the first feature based on the recent integration of Parasolid, we adapted our tessellation algorithm to provide high-quality and fully automatic faceted models. These are required as input for the hex-dominant meshing algorithms. A quality resolution of detailed CAD features and curvatures is key to simulation robustness and accuracy. For example, consider multiphase simulations of a ship hull or turbine blade design studies.
Heat transfer between solids is, in real case scenarios, imperfect due to surface roughness on the contact region. To improve the heat transfer, a very thin layer of a thermal interface material (TIM) is added in between the solids. It is possible to directly define the thermal contact resistance or even add a thermal interface material without the need to explicitly model this in the CAD.
Momentum sources were added as a new feature in CFD. They are very helpful when modeling components like jet fans in parking garages or fans in thermal packaging applications. In contrast to the complexity of modeling the fan geometry and rotational domain, in many cases, it is sufficient to model the momentum introduced by those components. For example, in the easiest case, this can be achieved via a simple geometry primitive like a cylinder. We also extended previous concepts of the incompressible solver like power sources and passive scalar sources to the convective and conjugate heat transfer applications.
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