NDLI: A changing-topology moving mesh technique for large displacements

Content Provider	Springer Nature Link
Author	Alauzet, Frédéric
Copyright Year	2013
Abstract	Three-dimensional real-life simulations are generally unsteady and involve moving geometries. Industry is currently very far from performing such body-fitted simulations on a daily basis, mainly due to the robustness of the moving mesh algorithm and their extensive computational cost. The proposed approach is a way to improve these two issues. This paper introduces two new ideas. First, it demonstrates numerically that moving three-dimensional complex geometries with large displacements is feasible using only vertex displacements and mesh-connectivity changes. This is new and presents several advantages over usual techniques for which the number of vertices varies in time. Second, most of the CPU time spent to move the mesh is due to solving the mesh deformation algorithm to propagate the body displacement inside the volume. Thanks to the use of high-order vertex trajectory and advanced meshing operators to optimize the mesh, we can drastically reduce the required number of solutions and CPU time. The efficiency of this new methodology is illustrated on numerous 3D problems involving large displacements.
Starting Page	175
Ending Page	200
Page Count	26
File Format	PDF
ISSN	01770667
Journal	Engineering with Computers
Volume Number	30
Issue Number	2
e-ISSN	14355663
Language	English
Publisher	Springer London
Publisher Date	2013-10-04
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Moving mesh Mesh deformation algorithm Dynamic mesh Topology change Swapping Local reconnection elasticity equation Large displacement Computer-Aided Engineering (CAD, CAE) and Design Math. Applications in Chemistry Systems Theory, Control Calculus of Variations and Optimal Control; Optimization Mechanics ApplicationMathematics/Computational Methods of Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering Computer Science Applications Modeling and Simulation Software

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