Three‐dimensional parallel unstructured grid generation

Shostko, Alexander; Löhner, Rainald

doi:10.1002/nme.1620380603

Cited by 55 publications

(18 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Possible candidates are the parallelized volume mesh generation algorithms based on octree, advancing front or Delaunay methods [19][20][21][22][23][24][25][26][27].…”

Section: Identify All Continuous Regionsmentioning

confidence: 99%

Parallel remeshing of unstructured volume grids for CFD applications

Tremel¹,

Sørensen²,

Hitzel³

et al. 2006

Numerical Methods in Fluids

View full text Add to dashboard Cite

SUMMARYThis paper presents a new approach towards the parallel local remeshing of unstructured tetrahedral grids on distributed memory parallel computers based on the message passing paradigm (MPI). The overall remeshing approach consisting of the parallel determination of the regions to be remeshed and the parallel local surface and volume remeshing is described in detail. An application of the remeshing algorithms in a time-accurate simulation of bodies in relative motion demonstrates the capabilities of the approach.

show abstract

“…Possible candidates are the parallelized volume mesh generation algorithms based on octree, advancing front or Delaunay methods [19][20][21][22][23][24][25][26][27].…”

Section: Identify All Continuous Regionsmentioning

confidence: 99%

Parallel remeshing of unstructured volume grids for CFD applications

Tremel¹,

Sørensen²,

Hitzel³

et al. 2006

Numerical Methods in Fluids

View full text Add to dashboard Cite

show abstract

“…Loehner [25] has demonstrated the extension of the advancing front algorithm to produce tetrahedral elements on parallel platforms. Said et al [30] have shown parallel mesh generation using initial coarse meshing and decomposition.…”

Section: Introductionmentioning

confidence: 99%

Domain Decomposition Approach for Automatic Parallel Generation of Tetrahedral Grids

Ivanov

Andrä

Kudryavtsev

2006

Comput. Methods Appl. Math.

View full text Add to dashboard Cite

The desire to simulate even more geometrical and physical features of technical structures and the availability of parallel computers and parallel numerical solvers which can exploit the power of these machines have led to a steady increase in the number of the grid elements used. Memory requirements and computational time are too large for usual serial PCs. An a priori partitioning algorithm for the parallel generation of 3D non-overlapping compatible unstructured meshes based on a CAD surface description is presented in this paper. Emphasis is placed on practical issues and implementation rather than on theoretical complexity. In order to achieve robustness of the algorithm with respect to the geometrical shape of the structure, the authors propose that there should be several or many but relatively simple algorithmic steps. The geometrical domain decomposition approach has been applied. It allows us to use standard 2D and 3D high-quality Delaunay mesh generators for independent and simultaneous volume meshing. Different aspects of load balancing methods are also explored in the paper. The MPI library and SPMD model are used for parallel grid generator implementation. Several 3D examples are given.

show abstract

“…Several years ago, the author and his colleagues introduced a parallel AFT based on the subdivision of the background grid [Löh92,Sho95]. While used for some demonstration runs, this scheme was not general enough for a production environment.…”

Section: Introductionmentioning

confidence: 99%

“…the introduction of a new element only affects (and is affected by) the immediate vicinity. This allows for the introduction of elements in parallel, provided that sufficient distance lies between them.Several years ago, the author and his colleagues introduced a parallel AFT based on the subdivision of the background grid [Löh92,Sho95]. While used for some demonstration runs, this scheme was not general enough for a production environment.…”

mentioning

confidence: 99%

Development and Application of New Algorithms for the Simulation of Viscous Compressible Flows with Moving Bodies in Three Dimensions

Löhner¹,

Chen²,

Cebral³

2000

View full text Add to dashboard Cite

Public reporting burden for this collection of information is estimated to average 1 hour per response, includini gathering and maintaining the data needed, and completing and reviewing the collection of information. Send collection of information, including suggestions for reducing this burden, to Washington Headquarters Service: Davis Highway, Suite 1204, Arlington, VA 22202-4302, and TITLE AND SUBTITLE Development and Application of New Algorithms for the Simulation of Viscous Compressible Flows with Moving Bodies in Three Dimensions AUTHOR(S)Rainald Lohner, Chi Yang and Juan R. Cebral FUNDING NUMBERSF49620-97-1-0032 PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)George Mason University CSI Fairfax, VA 22030-4444 PERFORMING ORGANIZATION REPORT NUMBER SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)Air Force Office of Scientific Research AFOSR/NM 801 N. Randolph Street, Rm 732 Arlington, VA 22203-1977 SPONSORING/MONITORING AGENCY REPORT NUMBERF49620-97-1-0032 SUPPLEMENTARY NOTES 12a. DISTRIBUTION AVAILABILITY STATEMENTApproved for public release; distribution unlimited. 12b. DISTRIBUTION CODE AIR FORCE OFRCE 01 ; SCiENTIRC RESEARCH (AFOSR) NOTICE OF TRANSMIT TAL DTIC. THIS TECHNICAL REPORT HAS BEEN REVÜWED ^ND IS APPROVED FOR PUBUC RELEASE ABSTRACT (Maximum 200 words)The overall objective of the research carried out over the last three years was the development of new algorithms for the efficient simulation of viscous compressible flows with moving bodies in three dimensions using unstructured grids. The development was based on current 3-D Euler/Navier-Stokes capabilities, and encompassed flow solvers, grid generation, fluid-structure interaction, the efficient use of supercomputer hardware, and new visualization capabilities. The research carried out over the last three years significantly advanced the state of the art in this area of CFD. The particular topics are treated below in detail. 00814. SUBJECT SUMMARYThe overall objective of the research carried out over the last three years was the development of new algorithms for the efficient simulation of viscous compressible flows with moving bodies in three dimensions using unstructured grids. The development was based on current 3-D Euler/Navier-Stokes capabilities, and encompassed flow solvers, grid generation, fluid-structure interaction, the efficient use of supercomputer hardware, and new visualization capabilities. The research carried out over the last three years significantly advanced the state of the art in this area of CFD. The particular topics are treated below in detail. FLOW SOLVERSFor the flow solvers, seven major developments took place over the course of this research effort: a) Implicit flow solvers; b) Better mesh moving strategies; c) Implementation of turbulence models; and d) Validation studies. Implicit Flow SolversImplicit flow solvers are considered essential for the efficient simulation of viscous, compressible, time-dependent flows. We developed a linearized implicit scheme that uses a Generalized Minimal RESiduals algo...

show abstract

Three‐dimensional parallel unstructured grid generation

Cited by 55 publications

References 24 publications

Parallel remeshing of unstructured volume grids for CFD applications

Parallel remeshing of unstructured volume grids for CFD applications

Domain Decomposition Approach for Automatic Parallel Generation of Tetrahedral Grids

Development and Application of New Algorithms for the Simulation of Viscous Compressible Flows with Moving Bodies in Three Dimensions

Contact Info

Product

Resources

About