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Interactive mesh dragging with adaptive remeshing technique

H. Suzuki, Y. Sakurai, T. Kanai, F. Kimura
Proceedings Pacific Graphics '98. Sixth Pacific Conference on Computer Graphics and Applications (Cat. No.98EX208)  
This method is based on an adaptive remeshing procedure which evaluates the deformation of faces by dragging and properly modifies them by deleting or splitting with local topological operations.  ...  With our method, the user can drag a part of a triangular mesh and change its position and orientation.  ...  We apply the technique to a mesh dragging operation, with which a user can move or rotate a characteristic portion of the mesh.  ... 
doi:10.1109/pccga.1998.732112 dblp:conf/pg/SuzukiSKK98 fatcat:qoabtqru6zevhhxzua3bxkxyji

An immersed interface method for the Vortex-In-Cell algorithm

G. Morgenthal, J.H. Walther
2007 Computers & structures  
The concept is extended such as to provide exact velocity predictions on the mesh with free-space boundary conditions.  ...  A novel partial remeshing technique is introduced which only performs remeshing of the vortex elements which are located sufficiently distant from the immersed interfaces, thus maintaining a sufficient  ...  The partial remeshing technique is described in Section 5.  ... 
doi:10.1016/j.compstruc.2007.01.020 fatcat:fcctdvpb5vgktf6m7vaarxzczm

Atmosphere-ocean dynamics

1983 Applied Ocean Research  
The quad-dominant mesh generator coupled with this solver is based on a Cartesian mesh with a conforming spatial decomposition.  ...  A fast dynamic remeshing technique is used to control the distribution of the mesh nodes during the unsteady simulation, thus minimizing (or even eliminating) the need for adding artificial dissipation  ...  This technique employs a fast dynamic remeshing procedure to adaptively redistribute the mesh points based on the gradient of the vorticity calculated using the solution variables from the previous time  ... 
doi:10.1016/0141-1187(83)90039-1 fatcat:ib6toymyejhjjmfqyhwuvhf45y

SIMULATION OF AEROELASTIC MESOFLAPS FOR SHOCK/BOUNDARY-LAYER INTERACTION

B. WOOD, E. LOTH, P. GEUBELLE
2002 Journal of Fluids and Structures  
Issues of optimum fluid cycles per aeroelastic iteration, underrelaxation, and adaptive mesh re-gridding versus motion were considered in the context of the flap deflection.  ...  The aeroelastic convergence was accelerated and improved by employing such techniques. #  ...  ACKNOWLEDGEMENTS This work was supported by the Air Force Office of Scientific Research (AFOSR) under contract F49620-98-1-0381, with computational time furnished by the National Center for Supercomputing  ... 
doi:10.1006/jfls.2002.0464 fatcat:d2aygz77dzcxvpttwufe3ggfce

An immersed boundary method for smoothed particle hydrodynamics of self-propelled swimmers

S.E. Hieber, P. Koumoutsakos
2008 Journal of Computational Physics  
We wish to acknowledge several helpful interactions with Caroline Hieber during the writing of this paper. Fig. 18 .  ...  Unstructured grid methods [15] are widely used techniques employing sets of grids that adapt to the deformation of the boundary.  ...  Furthermore the IBM technique has been coupled with the Reproducing Kernel Methods [49] while in [12] Immersed Boundary techniques were combined with Lattice Boltzmann simulations.  ... 
doi:10.1016/j.jcp.2008.06.017 fatcat:y4nmoya4zzg6lhlvw7vjhlgthq

Moving particles through a finite element mesh

A.P. Peskin, G.R. Hardin
1998 Journal of Research of the National Institute of Standards and Technology  
We present a new numerical technique for modeling the flow around multiple objects moving in a fluid. The method tracks the dynamic interaction between each particle and the fluid.  ...  Both the complications of creating finite element meshes around appreciable numbers of particles, and extensive remeshing upon movement of the particles are simplified in this method.  ...  Multi-particle systems do not require complicated meshing schemes with our technique.  ... 
doi:10.6028/jres.103.004 pmid:28009377 pmcid:PMC4891964 fatcat:hrmehyriqzcbfbzcrn6ps6sqei

GPU accelerated simulations of bluff body flows using vortex particle methods

Diego Rossinelli, Michael Bergdorf, Georges-Henri Cottet, Petros Koumoutsakos
2010 Journal of Computational Physics  
We present a GPU accelerated solver for simulations of bluff body flows in 2D using a remeshed vortex particle method and the vorticity formulation of the Brinkman penalization technique to enforce boundary  ...  The GPU implementation uses OpenGL so as to perform efficient particle-grid operations and a CUFFT-based solver for the Poisson equation with unbounded boundary conditions.  ...  Acknowledgements We wish to acknowledge several helpful discussions with Dr. Massimiliano Fatica (NVIDIA) throughout the course of this work.  ... 
doi:10.1016/j.jcp.2010.01.004 fatcat:ffp2fenm4vb4fg3mzw4qj44rja

Topology optimization of thermal fluid–structure systems using body-fitted meshes and parallel computing

F. Feppon, G. Allaire, C. Dapogny, P. Jolivet
2020 Journal of Computational Physics  
The performance of our strategy is illustrated with two examples of coupled physics: respectively fluid-structure interaction and convective heat transfer.  ...  mesh of the latter at every stage of the optimization process; (ii) an efficient constrained optimization algorithm which is very well adapted to the infinite-dimensional shape optimization context; (  ...  We kindly thank Algiane Froehly for her essential help regarding the use of the remeshing library Mmg.  ... 
doi:10.1016/j.jcp.2020.109574 fatcat:uj4vs7b4lbd5dktgrl4apmw67a

Adaptive fracture simulation of multi-layered thin plates

Oleksiy Busaryev, Tamal K. Dey, Huamin Wang
2013 ACM Transactions on Graphics  
We use FEM to simulate paper and a 2D constrained Delaunay triangulation to adaptively refine the mesh near the potential crack boundary.  ...  We formulate a fracture-aware remeshing scheme based on constrained Delaunay triangulation, to adaptively provide more fracture details.  ...  To obtain such result without sacrificing simulation performance, we implement adaptive remeshing with respect to potential crack paths.  ... 
doi:10.1145/2461912.2461920 fatcat:kow3vbtmujeknpzb27bmi2gybe

Eulerian-on-lagrangian cloth simulation

Nicholas J. Weidner, Kyle Piddington, David I. W. Levin, Shinjiro Sueda
2018 ACM Transactions on Graphics  
Using this 'Eulerian-on-Lagrangian' discretization, a set of rules for introducing and constraining EoL Nodes, and an adaptive remesher, This simulator allows cloth to move in a sliding motion over sharp  ...  The current implementation is limited to cloth collision with static boxes, but the method presented can be expanded to include contact with more complicated meshes and dynamic rigid bodies. iv ACKNOWLEDGMENTS  ...  Such interactions are common when cloth interacts with the real world, from a table cloth pulled over a table edge, to a sheet dragged off a clothing line.  ... 
doi:10.1145/3197517.3201281 fatcat:rhygls5wyjeencbofwzbobxph4

A Semi-Langrangian Vortex Penalization Method for 3D Incompressible Flows

Chlo Mimeau sci
2019 Journal of Mathematical Study  
A coupling of this semi-Lagrangian method with an immersed boundary method, namely the Brinkman penalization technique, is proposed in this paper in order to efficiently take into account the presence  ...  A remeshed Vortex method is proposed in this work to simulate threedimensional incompressible flows.  ...  In this work, we present a remeshed vortex method coupled with an immersed boundary technique in order to account for the presence of obstacles in the flow and to model the boundary conditions.  ... 
doi:10.4208/jms.v52n3.19.04 fatcat:a4ku6alvwfaqndnbojdmmdipva

Vortex Methods with Spatially Varying Cores

Georges-Henri Cottet, Petros Koumoutsakos, Mohamed Lemine Ould Salihi
2000 Journal of Computational Physics  
Several local mappings can be combined giving the capability of "mesh-embedding" to vortex methods.  ...  Using this scheme, previously unattainable simulations of cylinders undergoing rotary oscillations at high Reynolds numbers reveal an interesting mechanism for drastic drag reduction.  ...  The adaptivity in grid based methods is obtained by spatially adjusting the grid size and/or using techniques such as B-splines and embedded meshes [13] .  ... 
doi:10.1006/jcph.2000.6531 fatcat:rpnxkr5pknev7exxqztywpzcem

A mesh adaptation framework for dealing with large deforming meshes

Gaëtan Compère, Jean-François Remacle, Johan Jansson, Johan Hoffman
2009 International Journal for Numerical Methods in Engineering  
We then present several test cases to evaluate the performances of the proposed techniques and to show their applicability to fluid-structure interaction problems with arbitrarily large deformations.  ...  to integrate a mesh adaptation procedure in a physics solver.  ...  MESH ADAPTATION There are basically two kind of techniques that enable to adapt a mesh. Remeshing techniques consist in removing the existing mesh and replacing it by an adapted one.  ... 
doi:10.1002/nme.2788 fatcat:eap6azbbsfgefhh7myzapsgv3y

Recent Developments of a Coupled CFD/CSD Methodology [chapter]

Joseph D. Baum, Hong Luo, Eric L. Mestreau, Dmitri Sharov, Rainald Löhner, Daniele Pelessone, Charles Charman
2001 Lecture Notes in Computer Science  
The coupled methodology enables cost-effective simulation of fluid-structure interactions with a particular emphasis on detonation and shock interaction.  ...  An application of the methodology to a case of weapon detonation and fragmentation is presented, as well as fragment and airblast interaction with a steel wall.  ...  Three levels of mesh adaptation are shown in these figures.  ... 
doi:10.1007/3-540-45545-0_120 fatcat:iqil6iohpbbyjinojxx7altfhu

Advanced mesh generation and update methods for 3D flow simulations

A. A. Johnson, T. E. Tezduyar
1999 Computational Mechanics  
Advanced mesh generation and update methods for parallel 3D computation of complex¯ow problems are presented.  ...  The complexities of the class of problems targeted include complex geometries, unsteady behavior, and moving boundaries and interfaces, such as those encountered in¯uid-object interactions.  ...  We also presented a new technique for remeshing involving only adjustments to the already existing grid, and thus eliminating the need to generate an entirely new grid from scratch.  ... 
doi:10.1007/s004660050393 fatcat:nz6hqdbxczgnxitrcjgtzxjheq
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