The Experts below are selected from a list of 3414 Experts worldwide ranked by ideXlab platform
Tayfun E. Tezduyar - One of the best experts on this subject based on the ideXlab platform.
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space time finite element computation of complex fluid structure interactions
International Journal for Numerical Methods in Fluids, 2010Co-Authors: Tayfun E. Tezduyar, Kenji Takizawa, Creighton Moorman, Samuel Wright, Jason D ChristopherAbstract:New special fluid-structure interaction (FSI) techniques, supplementing the ones developed earlier, are employed with the Stabilized Space-Time FSI (SSTFSI) technique. The new special techniques include improved ways of calculating the equivalent Fabric Porosity in Homogenized Modeling of Geometric Porosity (HMGP), improved ways of building a starting point in FSI computations, ways of accounting for fluid forces acting on structural components that are not expected to influence the flow, adaptive HMGP, and multiscale sequentially coupled FSI techniques. While FSI modeling of complex parachutes was the motivation behind developing some of these techniques, they are also applicable to other classes of complex FSI problems. We also present new ideas to increase the scope of our FSI and CFD techniques. .
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interface projection techniques for fluid structure interaction modeling with moving mesh methods
Computational Mechanics, 2008Co-Authors: Tayfun E. Tezduyar, Jason D Christopher, Sunil Sathe, Jason Pausewang, Matthew Schwaab, Jason CrabtreeAbstract:The stabilized space–time fluid–structure interaction (SSTFSI) technique developed by the Team for Advanced Flow Simulation and Modeling (T★AFSM) was applied to a number of 3D examples, including arterial fluid mechanics and parachute aerodynamics. Here we focus on the interface projection techniques that were developed as supplementary methods targeting the computational challenges associated with the geometric complexities of the fluid–structure interface. Although these supplementary techniques were developed in conjunction with the SSTFSI method and in the context of air–Fabric interactions, they can also be used in conjunction with other moving-mesh methods, such as the Arbitrary Lagrangian–Eulerian (ALE) method, and in the context of other classes of FSI applications. The supplementary techniques currently consist of using split nodal values for pressure at the edges of the Fabric and incompatible meshes at the air–Fabric interfaces, the FSI Geometric Smoothing Technique (FSI-GST), and the Homogenized Modeling of Geometric Porosity (HMGP). Using split nodal values for pressure at the edges and incompatible meshes at the interfaces stabilizes the structural response at the edges of the membrane used in modeling the Fabric. With the FSI-GST, the fluid mechanics mesh is sheltered from the consequences of the geometric complexity of the structure. With the HMGP, we bypass the intractable complexities of the geometric Porosity by approximating it with an “equivalent”, locally-varying Fabric Porosity. As test cases demonstrating how the interface projection techniques work, we compute the air–Fabric interactions of windsocks, sails and ringsail parachutes.
Jason Crabtree - One of the best experts on this subject based on the ideXlab platform.
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interface projection techniques for fluid structure interaction modeling with moving mesh methods
Computational Mechanics, 2008Co-Authors: Tayfun E. Tezduyar, Jason D Christopher, Sunil Sathe, Jason Pausewang, Matthew Schwaab, Jason CrabtreeAbstract:The stabilized space–time fluid–structure interaction (SSTFSI) technique developed by the Team for Advanced Flow Simulation and Modeling (T★AFSM) was applied to a number of 3D examples, including arterial fluid mechanics and parachute aerodynamics. Here we focus on the interface projection techniques that were developed as supplementary methods targeting the computational challenges associated with the geometric complexities of the fluid–structure interface. Although these supplementary techniques were developed in conjunction with the SSTFSI method and in the context of air–Fabric interactions, they can also be used in conjunction with other moving-mesh methods, such as the Arbitrary Lagrangian–Eulerian (ALE) method, and in the context of other classes of FSI applications. The supplementary techniques currently consist of using split nodal values for pressure at the edges of the Fabric and incompatible meshes at the air–Fabric interfaces, the FSI Geometric Smoothing Technique (FSI-GST), and the Homogenized Modeling of Geometric Porosity (HMGP). Using split nodal values for pressure at the edges and incompatible meshes at the interfaces stabilizes the structural response at the edges of the membrane used in modeling the Fabric. With the FSI-GST, the fluid mechanics mesh is sheltered from the consequences of the geometric complexity of the structure. With the HMGP, we bypass the intractable complexities of the geometric Porosity by approximating it with an “equivalent”, locally-varying Fabric Porosity. As test cases demonstrating how the interface projection techniques work, we compute the air–Fabric interactions of windsocks, sails and ringsail parachutes.
Jason D Christopher - One of the best experts on this subject based on the ideXlab platform.
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space time finite element computation of complex fluid structure interactions
International Journal for Numerical Methods in Fluids, 2010Co-Authors: Tayfun E. Tezduyar, Kenji Takizawa, Creighton Moorman, Samuel Wright, Jason D ChristopherAbstract:New special fluid-structure interaction (FSI) techniques, supplementing the ones developed earlier, are employed with the Stabilized Space-Time FSI (SSTFSI) technique. The new special techniques include improved ways of calculating the equivalent Fabric Porosity in Homogenized Modeling of Geometric Porosity (HMGP), improved ways of building a starting point in FSI computations, ways of accounting for fluid forces acting on structural components that are not expected to influence the flow, adaptive HMGP, and multiscale sequentially coupled FSI techniques. While FSI modeling of complex parachutes was the motivation behind developing some of these techniques, they are also applicable to other classes of complex FSI problems. We also present new ideas to increase the scope of our FSI and CFD techniques. .
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interface projection techniques for fluid structure interaction modeling with moving mesh methods
Computational Mechanics, 2008Co-Authors: Tayfun E. Tezduyar, Jason D Christopher, Sunil Sathe, Jason Pausewang, Matthew Schwaab, Jason CrabtreeAbstract:The stabilized space–time fluid–structure interaction (SSTFSI) technique developed by the Team for Advanced Flow Simulation and Modeling (T★AFSM) was applied to a number of 3D examples, including arterial fluid mechanics and parachute aerodynamics. Here we focus on the interface projection techniques that were developed as supplementary methods targeting the computational challenges associated with the geometric complexities of the fluid–structure interface. Although these supplementary techniques were developed in conjunction with the SSTFSI method and in the context of air–Fabric interactions, they can also be used in conjunction with other moving-mesh methods, such as the Arbitrary Lagrangian–Eulerian (ALE) method, and in the context of other classes of FSI applications. The supplementary techniques currently consist of using split nodal values for pressure at the edges of the Fabric and incompatible meshes at the air–Fabric interfaces, the FSI Geometric Smoothing Technique (FSI-GST), and the Homogenized Modeling of Geometric Porosity (HMGP). Using split nodal values for pressure at the edges and incompatible meshes at the interfaces stabilizes the structural response at the edges of the membrane used in modeling the Fabric. With the FSI-GST, the fluid mechanics mesh is sheltered from the consequences of the geometric complexity of the structure. With the HMGP, we bypass the intractable complexities of the geometric Porosity by approximating it with an “equivalent”, locally-varying Fabric Porosity. As test cases demonstrating how the interface projection techniques work, we compute the air–Fabric interactions of windsocks, sails and ringsail parachutes.
Matthew Schwaab - One of the best experts on this subject based on the ideXlab platform.
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interface projection techniques for fluid structure interaction modeling with moving mesh methods
Computational Mechanics, 2008Co-Authors: Tayfun E. Tezduyar, Jason D Christopher, Sunil Sathe, Jason Pausewang, Matthew Schwaab, Jason CrabtreeAbstract:The stabilized space–time fluid–structure interaction (SSTFSI) technique developed by the Team for Advanced Flow Simulation and Modeling (T★AFSM) was applied to a number of 3D examples, including arterial fluid mechanics and parachute aerodynamics. Here we focus on the interface projection techniques that were developed as supplementary methods targeting the computational challenges associated with the geometric complexities of the fluid–structure interface. Although these supplementary techniques were developed in conjunction with the SSTFSI method and in the context of air–Fabric interactions, they can also be used in conjunction with other moving-mesh methods, such as the Arbitrary Lagrangian–Eulerian (ALE) method, and in the context of other classes of FSI applications. The supplementary techniques currently consist of using split nodal values for pressure at the edges of the Fabric and incompatible meshes at the air–Fabric interfaces, the FSI Geometric Smoothing Technique (FSI-GST), and the Homogenized Modeling of Geometric Porosity (HMGP). Using split nodal values for pressure at the edges and incompatible meshes at the interfaces stabilizes the structural response at the edges of the membrane used in modeling the Fabric. With the FSI-GST, the fluid mechanics mesh is sheltered from the consequences of the geometric complexity of the structure. With the HMGP, we bypass the intractable complexities of the geometric Porosity by approximating it with an “equivalent”, locally-varying Fabric Porosity. As test cases demonstrating how the interface projection techniques work, we compute the air–Fabric interactions of windsocks, sails and ringsail parachutes.
Jason Pausewang - One of the best experts on this subject based on the ideXlab platform.
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interface projection techniques for fluid structure interaction modeling with moving mesh methods
Computational Mechanics, 2008Co-Authors: Tayfun E. Tezduyar, Jason D Christopher, Sunil Sathe, Jason Pausewang, Matthew Schwaab, Jason CrabtreeAbstract:The stabilized space–time fluid–structure interaction (SSTFSI) technique developed by the Team for Advanced Flow Simulation and Modeling (T★AFSM) was applied to a number of 3D examples, including arterial fluid mechanics and parachute aerodynamics. Here we focus on the interface projection techniques that were developed as supplementary methods targeting the computational challenges associated with the geometric complexities of the fluid–structure interface. Although these supplementary techniques were developed in conjunction with the SSTFSI method and in the context of air–Fabric interactions, they can also be used in conjunction with other moving-mesh methods, such as the Arbitrary Lagrangian–Eulerian (ALE) method, and in the context of other classes of FSI applications. The supplementary techniques currently consist of using split nodal values for pressure at the edges of the Fabric and incompatible meshes at the air–Fabric interfaces, the FSI Geometric Smoothing Technique (FSI-GST), and the Homogenized Modeling of Geometric Porosity (HMGP). Using split nodal values for pressure at the edges and incompatible meshes at the interfaces stabilizes the structural response at the edges of the membrane used in modeling the Fabric. With the FSI-GST, the fluid mechanics mesh is sheltered from the consequences of the geometric complexity of the structure. With the HMGP, we bypass the intractable complexities of the geometric Porosity by approximating it with an “equivalent”, locally-varying Fabric Porosity. As test cases demonstrating how the interface projection techniques work, we compute the air–Fabric interactions of windsocks, sails and ringsail parachutes.
