A Modular and Efficient Simulation Environment for FluidStructure

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A Modular and Efficient Simulation Environment for Fluid-Structure Interactions Miriam Mehl Bernhard Gatzhammer Department

A Modular and Efficient Simulation Environment for Fluid-Structure Interactions Miriam Mehl Bernhard Gatzhammer Department of Computer Science, TU München ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

Outline no fluid solver details FSI ce motivation application programming interface modules data transfer

Outline no fluid solver details FSI ce motivation application programming interface modules data transfer coupling strategies numerical results ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

Plug-and-Play for FSI Mp. CCI Data Mapping Coupling Strategy Fluid Solver ECT 2008, Athens,

Plug-and-Play for FSI Mp. CCI Data Mapping Coupling Strategy Fluid Solver ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer Structure Solver

Plug-and-Play for FSI Mp. CCI Fluid Solver ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard

Plug-and-Play for FSI Mp. CCI Fluid Solver ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer Structure Solver

Plug-and-Play for FSI ce Coupling Strategy Central Surface Mesh Fluid Solver ECT 2008, Athens,

Plug-and-Play for FSI ce Coupling Strategy Central Surface Mesh Fluid Solver ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer Structure Solver

FSI ce – Application Programming Interface FSI_Init () FSI_Data_exchange () FSI_Finalize () FSI_Is_running ()

FSI ce – Application Programming Interface FSI_Init () FSI_Data_exchange () FSI_Finalize () FSI_Is_running () Fluid Solver FSI_Is_new_interface_values () FSI_Is_implicit_converged () ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

FSI ce – Application Programming Interface while (more time steps) Set time step length

FSI ce – Application Programming Interface while (more time steps) Set time step length Compute values of next time step Store values of next time step end while Fluid Solver ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

FSI ce – Application Programing Interface Fluid Solver while (more time steps) Read coupling

FSI ce – Application Programing Interface Fluid Solver while (more time steps) Read coupling data from com. mesh Set time step length Compute values of next time step Write coupling data to com. mesh Store values of next time step end while ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

FSI ce – Application Programing Interface Fluid Solver FSI_Init () while (more time steps)

FSI ce – Application Programing Interface Fluid Solver FSI_Init () while (more time steps) Read coupling data from com. mesh Set time step length Compute values of next time step Write coupling data to com. mesh FSI_Data_exchange () Store values of next time step end while FSI_Finalize () ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

FSI ce – Application Programing Interface Fluid Solver FSI_Init () while (FSI_Is_running()) if (FSI_Is_new_interface_values())

FSI ce – Application Programing Interface Fluid Solver FSI_Init () while (FSI_Is_running()) if (FSI_Is_new_interface_values()) Read coupling data from com. mesh Set time step length Compute values of next time step Write coupling data to com. mesh FSI_Data_exchange () if (FSI_Is_implicit_converged()) Store values of next time step end while FSI_Finalize () ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

FSI ce – Modules ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

FSI ce – Modules ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

FSI ce – Data Transfer How to map data from solver mesh to coupling

FSI ce – Data Transfer How to map data from solver mesh to coupling mesh ? Octree for efficient neighbour search Some projection / interpolation included Custom interpolations possible Provided to user in package FSItools ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

FSI ce – Coupling Strategies Explicit (weak) Implicit (strong) Subcycling Pre-computations Many others possible:

FSI ce – Coupling Strategies Explicit (weak) Implicit (strong) Subcycling Pre-computations Many others possible: just extend supervisor ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

Numerical Results – Implicit vs. Explicit ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

Numerical Results – Implicit vs. Explicit ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

Numerical Results ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

Numerical Results ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

Numerical Results – Data Mapping Cart. res. # triang. runtime 256 8, 000 2.

Numerical Results – Data Mapping Cart. res. # triang. runtime 256 8, 000 2. 6 sec 512 8, 000 10. 1 sec 512 32, 000 14. 3 sec 512 128, 000 17. 4 sec neighbourhood search measured on a Pentium M 1. 6 GHz processor with 2048 k. B cache ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

Conclusion enhancements of FSI*ce ü modular structure extendability, flexibility ü integration of various components

Conclusion enhancements of FSI*ce ü modular structure extendability, flexibility ü integration of various components first examples computed future: more solvers, more coupling strategies ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

Thank you for your attention! ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

Thank you for your attention! ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

FSI ce – Application Programing Interface Future goal: Multigrid Multilevel coupling mesh Multigrid scheme

FSI ce – Application Programing Interface Future goal: Multigrid Multilevel coupling mesh Multigrid scheme controlled from coupling supervisor Fluid Solver Allows V, W, . . . schemes without modifying solvers ECT 2008, Athens, 9/4/2008, Miriam Mehl, Bernhard Gatzhammer

1 Simulation Simulation Simulation Computer Model Simulation Simulation1 Simulation Simulation Simulation Computer Model Simulation Simulation
MODULAR FUNGSI Modular Pemrograman Modular adalah suatu teknikMODULAR FUNGSI Modular Pemrograman Modular adalah suatu teknik
Modular Programming Modular Programming 16 n Modular programmingModular Programming Modular Programming 16 n Modular programming
MODULAR FUNGSI yulidevyahoo com Modular Pemrograman Modular adalahMODULAR FUNGSI yulidevyahoo com Modular Pemrograman Modular adalah
Numerical Simulation of FluidStructure Interaction for a SimplifiedNumerical Simulation of FluidStructure Interaction for a Simplified
Numerical simulation of the FluidStructure Interaction in stentedNumerical simulation of the FluidStructure Interaction in stented
ENVIRONMENT ENVIRONMENT Define environment ENVIRONMENT Environment the socialENVIRONMENT ENVIRONMENT Define environment ENVIRONMENT Environment the social
WITNESS Simulation simulation simulation simulation part Seat ArrivalWITNESS Simulation simulation simulation simulation part Seat Arrival
1 Slug flow and fluidstructure interaction in industrial1 Slug flow and fluidstructure interaction in industrial
Modeling and Simulations of FluidStructure Interactions FSI FSIModeling and Simulations of FluidStructure Interactions FSI FSI
Levelset based fluidstructure interaction modeling with the eLevelset based fluidstructure interaction modeling with the e
The Virtual Test Facility Infrastructure for fluidstructure interactionThe Virtual Test Facility Infrastructure for fluidstructure interaction
FluidStructure Interaction Modelling with Europlexus Fast Dynamics SoftwareFluidStructure Interaction Modelling with Europlexus Fast Dynamics Software
Excellence Centre of Tribology FLUIDSTRUCTURE INTERACTION OF COUPLEDExcellence Centre of Tribology FLUIDSTRUCTURE INTERACTION OF COUPLED
The Virtual Test Facility Infrastructure for fluidstructure interactionThe Virtual Test Facility Infrastructure for fluidstructure interaction
The Virtual Test Facility Infrastructure for fluidstructure interactionThe Virtual Test Facility Infrastructure for fluidstructure interaction
Efficient Market Theory Efficient Markets In an efficientEfficient Market Theory Efficient Markets In an efficient
Efficient storage Efficient CPU use Implementation effort EfficientEfficient storage Efficient CPU use Implementation effort Efficient