23 verified PDFs
An automatic mesh generation method for the optimal computational fluid dynamics (CFD) analysis of a blade passage has been developed using deep reinforcement learning (DRL).
Development of an Automated Volume Mesh Generation CFD Framework for Hypersonic Heat Flux Predictions. Joel A. McQuaid and Christoph Brehm. University of Maryland. Advanced Modeling & Simulation (AMS) Seminar Series NASA Ames Research Center, May 30th, 2024.
There are three major methods for refining a computational mesh: r-, p-, and h-refinement, as illustrated in Figure 1.1. The r-refinement method is also widely used in OpenFOAM with grading functionality in blockMesh utility.
Employing the Ansys Fluent CFD package as the primary finite-volume solver, our study demonstrates the complete non-invasiveness of the presented mesh optimization ap-proach, requiring no access to the underlying software architecture.
Adaptive mesh techniques replace fixed-mesh approaches making the grid invisible to the CFD user or engineer
Empty circle principle: any node must not be contained within the circumcircle (circle passing through the vertices of a triangle) on any triangle within the mesh
by M Tomac · Cited by 31 — Overall, the presented implementation is deemed a valuable tool for cases where many meshes need to be generated for routine analyses and turnaround time is ...
To enable more efective error and cost control, this work introduces a novel approach to mesh adaptation. The method consists in building a unique adapted mesh that aims at minimizing the average error for a continuous set operating conditions.
These techniques operate on solution gradients and involve adapting (that is, refining and coarsening) the mesh to have adequate element sizes throughout the ...
The vision of CFD in 2030 emphasizes physics-based, predictive modeling, management of errors and uncertainties, automation in all phases of the CFD analysis ...
This research aims at developing innovative and efficient strategies to run computational fluid dynamics simulations when large displacements of geometry are ...
In a perfect world, a CFD mesh has elements with 90º between adjacent edges, a volume expansion ratio approaching unity, and a low mesh aspect ratio. In ...
Multigrid and preconditioning techniques are widely used to increase performance of the CFD code. ... In the computations, we used four mesh levels and the mesh ...
The method is grouped with shrink wrap, automated blocking, and domain decomposition techniques to extend it to the morphing of unstructured meshes.
Multiple Pointwise structured meshing techniques were used at the boundaries with hex‐dominant unstructured meshing away from the boundaries to successfully
Different mesh method- ologies such as hexahedral meshes, and hybrid prismatic-tetrahedral meshes are used to perform the numerical simulations.
Due to increased complexity of problems (geometries), the auto-mesh generation is considered to be a economical compromise between cost and accuracy. However, no auto mesh generation algorithm can generate mesh without having a few elements having poor quality.
by C Lock · Cited by 6 — This paper presents a novel approach, based on neural networks, to predict the mesh spacing for a simulation by making use of the large amount of simulations
by C Bertolli · Cited by 21 — Abstract. Graphical Processing Units (GPUs) have shown acceleration factors over multicores for structured mesh-based Computational Fluid. Dynamics (CFD).
In the following, a parallel mesh generation technique is described that enabled the generation of such meshes and scales up to O(105) cores to generate mesh elements.
