Efficient Hybrid Surface and Volume Mesh Generation for Viscous Flow Simulations

2011 ◽  
Author(s):  
Yasushi Ito ◽  
Mitsuhiro Murayama ◽  
Kazuomi Yamamoto ◽  
Alan Shih ◽  
Bharat Soni
Keyword(s):  
Viscous Flow ◽  
Mesh Generation ◽  
Flow Simulations ◽  
Volume Mesh

Octree-based hexahedral mesh generation for viscous flow simulations

1997 ◽  
Author(s):  
Ko-Foa Tchon ◽  
Charles Hirsch ◽  
Robert Schneiders ◽  
Ko-Foa Tchon ◽  
Charles Hirsch ◽  
...  
Keyword(s):  
Viscous Flow ◽  
Mesh Generation ◽  
Hexahedral Mesh ◽  
Flow Simulations ◽  
Hexahedral Mesh Generation

scholarly journals Prismatic mesh generation based on anisotropic volume harmonic field

2021 ◽  
Author(s):  
Yiming Zhu ◽  
Shengfa Wang ◽  
Xiaopeng Zheng ◽  
Na Lei ◽  
Zhongxuan Luo ◽  
...  
Keyword(s):  
Viscous Flow ◽  
Mesh Generation ◽  
Tetrahedral Mesh ◽  
Flow Simulations ◽  
Harmonic Field ◽  
Efficiency And Effectiveness

Abstract In this paper, we present an effective prismatic mesh generation method for viscous flow simulations. To address the prismatic mesh collisions in recessed cavities or slit areas, we exploit 3D tensors controlled anisotropic volume harmonic field to generate prismatic meshes. Specially, a well-fitting tetrahedral mesh is first constructed to serve as the discrete computation domain of volume harmonic fields. Then, 3D tensors are exploited to control the volume harmonic field that better fits the shape geometry. From the topological perspective, the generation of the prismatic mesh can be treated as a topology-preserved morphing of the viscous wall. Therefore, iso-surfaces in the volume harmonic field should be homeomorphic to the viscous wall while fitting its shapes. Finally, a full prismatic mesh can be induced by estimating the forward directions and visible regions in the volume harmonic field. Moreover, to be compatible with different simulation situations, the thickness of prismatic meshes should be variable. Our approach provides local adjustable thickness of prismatic meshes, which can be achieved by controlling local 3D tensors. The proposed anisotropic volume harmonic field based prismatic meshes are efficient and robust, and a full prismatic mesh can be guaranteed without low quality collisions. Various experiments have shown that our proposed prismatic meshes have obvious advantages in terms of efficiency and effectiveness.

scholarly journals Prismatic mesh generation based on anisotropic volume harmonic field

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Yiming Zhu ◽  
Shengfa Wang ◽  
Xiaopeng Zheng ◽  
Na Lei ◽  
Zhongxuan Luo ◽  
...  
Keyword(s):  
Viscous Flow ◽  
Mesh Generation ◽  
Tetrahedral Mesh ◽  
Flow Simulations ◽  
Harmonic Field ◽  
Efficiency And Effectiveness

AbstractIn this paper, we present an effective prismatic mesh generation method for viscous flow simulations. To address the prismatic mesh collisions in recessed cavities or slit areas, we exploit 3D tensors controlled anisotropic volume harmonic field to generate prismatic meshes. Specially, a well-fitting tetrahedral mesh is first constructed to serve as the discrete computation domain of volume harmonic fields. Then, 3D tensors are exploited to control the volume harmonic field that better fits the shape geometry. From the topological perspective, the generation of the prismatic mesh can be treated as a topology-preserved morphing of the viscous wall. Therefore, iso-surfaces in the volume harmonic field should be homeomorphic to the viscous wall while fitting its shapes. Finally, a full prismatic mesh can be induced by estimating the forward directions and visible regions in the volume harmonic field. Moreover, to be compatible with different simulation situations, the thickness of prismatic meshes should be variable. Our approach provides local adjustable thickness of prismatic meshes, which can be achieved by controlling local 3D tensors. The proposed anisotropic volume harmonic field based prismatic meshes are efficient and robust, and a full prismatic mesh can be guaranteed without low quality collisions. Various experiments have shown that our proposed prismatic meshes have obvious advantages in terms of efficiency and effectiveness.

Vehicle Thermal Management Simulation Using a Rapid Omni-Tree Based Adaptive Cartesian Mesh Generation Methodology

2004 ◽  
Author(s):  
Kumar Srinivasan ◽  
Z. J. Wang ◽  
Wei Yuan ◽  
Richard Sun
Keyword(s):  
Thermal Management ◽  
Mesh Generation ◽  
Development Process ◽  
Cfd Simulation ◽  
New Method ◽  
Surface Mesh ◽  
Passenger Vehicle ◽  
Traditional Approaches ◽  
Volume Mesh ◽  
Vehicle Development Process

CFD simulation of vehicle under-hood and under-body poses several challenges. Specifically, the complexity of the geometry involved makes the use of traditional mesh generation approaches, based on the boundary-to-interior methodology, impractical and time consuming. The current work presents the use of an interior-to-boundary method wherein the need for creating a ‘water-tight’ surface mesh is not a pre-requisite for volume mesh generation. The application of the new method is demonstrated for an actual passenger vehicle under-hood model with nearly a hundred components. Coupled radiation/convection simulations are performed to obtain the complete airflow and thermal map of the engine compartment. Results are validated with test data. The new method results in significant gains in efficiency over traditional approaches allowing the simulation tool to be used effectively in the vehicle development process.

Advanced mesh generation and update methods for 3D flow simulations

1999 ◽  
Vol 23 (2) ◽  
pp. 130-143 ◽  
Author(s):  
A. A. Johnson ◽  
T. E. Tezduyar
Keyword(s):  
Mesh Generation ◽  
3D Flow ◽  
Flow Simulations

scholarly journals Viscous flow simulations through multi-lobe progressive cavity pumps

2020 ◽  
Vol 17 (3) ◽  
pp. 768-780
Author(s):  
F. M. El-Abd ◽  
E. M. Wahba ◽  
I. G. Adam
Keyword(s):  
Viscous Flow ◽  
Flow Simulations
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