The Art of Map Meshing

As computer aided design (CAD) geometry has become more detailed, developing a finite element model to capture these features has required an increasing amount of time and experience. A tetrahedral mesh is often chosen because of its speed and robustness to discretize heavily featured geometry (e.g. hundreds of fillets). However, for structural analysis, tetrahedral elements can produce “stiff” results with an unacceptable percent error. For example, a modal analysis can produce higher than expected frequencies. To overcome this, mesh refinement and higher order tetrahedral elements can be used but this costs increased solve times and computational resources.

Another well-known approach to discretizing a model is “map meshing”, also known as solid meshing and hex meshing. For a given element size, its formulation does not have the issue of stiffness, it has faster solve times, and can produce results with less percent error. For all the advancements in processing automation, map meshing has not reached the level of automation like tet meshing has, leaving a large part of it to remain an art that is heavily dependent on user experience.

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Efficient Automation, Control, and Optimization of Thermo Fluid Systems using GE’s Flow Simulator

By Aditya Jayanthi, Thermal Solutions Product Manager, Altair. GE’s Flow Simulator is a part of the Altair Partner Alliance.

In the Turbomachinery industry, Thermo fluid system design is a creative process undertaken to solve new or existing problems that are often complicated because of the complex nature of fluid flow, and of heat and mass transfer mechanisms that govern the system. It is an extremely important task because it leads to new and improved designs. It often involves an open-ended solution with multiple possibilities, and is contrasted against analysis, which gives rise to unique, well-defined, closed-ended results. Thus, Thermo fluid system design generally involves considering many different solutions, and finding an acceptable result that satisfies the given problem. Synthesis brings several different analyses and types of information together, thus forming an important facet in system design. Figure 1 below outlines the common practice adopted by Turbomachinery companies for efficient automation, control and optimization of Thermo fluid systems applications.

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Inspire, Ignite, and Innovate

Yes, that is the theme for this year’s RAPID-TCT conference, and no, I did not influence the RAPID-TCT committee’s choice.  We named our product Altair Inspire™ years ago to evoke exactly the same sentiment towards product design.  We are glad … Read More

5 Ways to Optimize Your Design

Have you ever felt like your design was overweight or unnecessarily exceeded its structural requirements? This could mean you are using excessive material which can directly affects the overall cost. Or has your single part has been patched up with … Read More

Beyond SAM: How to Optimize Your Software Assets

Software sprawl can be a big problem for big organizations. With thousands, tens of thousands or more employees multiplied by the number of applications each of them uses — either periodically or every day, with mixed individual and shared licenses … Read More

E-Motor Design Using Multiphysics Optimization

The powertrain of electric vehicles must be developed to consider and finally fulfill an increasing number of internal, customer and legal requirements and must be developed with increasing ambitions concerning target fulfillment. The classical development strategies foresee individual development routes … Read More