1. Computation of unsteady euler flows with moving boundaries and fluid-structure interactions.
- Author
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Araki, H., Brézin, E., Ehlers, J., Frisch, U., Hepp, K., Jaffe, R. L., Kippenhahn, R., Weidenmüller, H. A., Wess, J., Zittartz, J., Beiglböck, W., Lehr, Sabine, Kutler, Paul, Flores, Jolen, Chattot, Jean-Jacques, Bayyuk, S. A., Powell, K. G., and Leer, B.
- Abstract
An algorithm for the computation of steady and unsteady inviscid, compressible, two-dimensional flows is presented. Grid generation utilizes the quadtree spatial subdivision algorithm, allowing automatic meshing of boundaries of arbitrary geometry, and allowing h-adaptivity to geometric and solution features. Internal boundaries and interfaces may move, deform, coalesce, and disintegrate arbitrarily. The flow-solver is of the High-Resolution Gudonov type. For moving boundaries, a novel feature of the algorithm is that the grid is stationary and boundaries are allowed to move across grid-lines. This is enabled by merging cells in the vicinity of boundaries to form composite cells that are topologically invariant during individual motion steps. This merging also eliminates the small-cell time-step constraint introduced by grid non-conformality. The motion of boundaries may be prescribed, or computed from aerodynamic, body, or contact forces in a coupled fashion. Two computations illustrating the capabilities of the algorithm are presented. [ABSTRACT FROM AUTHOR]
- Published
- 1997
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