As a computational geometry developer I have worked on several meshing software development projects. Every time mesh quality has become focal point. As matter of fact this becomes conflicting topic between the various teams due to the difference of opinion in engineering community.

A most common complaint often cited by computational fluid dynamics practitioners is the generation of a good quality computational mesh and is estimated to be costing about 70% of the entire simulation cycle. Though much progress has been made in terms of algorithm accuracy and speed over the last three decades, generating grids step for complex, real world computations still remains the most time consuming and least reliable component of CFD simulation process. Meshless methods thus provide a viable alternative to grid-based flow computation as they are supposed to not require the conventional grid structure and thereby relieving the many issues specifically related to grid generation step. This blog shall provide you an introduction and update about the popular meshless methods available today.

Though CFD has been widely used as a standard and well established engineering design analysis and optimization tool, the turbomachinery flow simulation still remains one of the challenges to handle. The typical reasons that make them so are the very complex nature of geometries and flow physics encountered in turbomachines. The following phenomena make turbomachinery flows extremely intricate and difficult to model for CFD simulation studies:

Grid generation or meshing is a very critical part within the CFD simulation process as it not only dictates the simulation time but also the accuracy of results of the study. Generating a very coarse and poor quality mesh/ grid often leads to non-physical or highly inaccurate simulation results though may be solved on a very powerful solver. Hence the grid generation skills, capability and its exposure are of equal importance as much as that of the solver operations.

Are you a CFD engineer? Have you ever faced trouble doing meshing because of CAD issues like complexity in CAD model and CAD data loss while importing CAD geometry in CFD tools? Do you want to know how to do CAD repair and how to get geometry ready for analysis? Its necessity, process and how to do CAD-Repair? Being a CFD analyst do you want to know how to extract CFD domain and how to simplify the task of creating good quality mesh that is required for CFD analysis?

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