A FINITE-VOLUME METHOD FOR FLUID FLOW SIMULATIONS WITH MOVING BOUNDARIES
| Autor: | Y. G. Lai, Andrzej Przekwas |
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| Rok vydání: | 1994 |
| Předmět: |
Mathematical optimization
Conservation law Finite volume method Mechanical Engineering Numerical analysis Mathematical analysis Constraint (computer-aided design) Computational Mechanics Energy Engineering and Power Technology Aerospace Engineering Condensed Matter Physics Space (mathematics) Grid Mechanics of Materials Fluid dynamics Representation (mathematics) Mathematics |
| Zdroj: | International Journal of Computational Fluid Dynamics. 2:19-40 |
| ISSN: | 1029-0257 1061-8562 |
| DOI: | 10.1080/10618569408904482 |
| Popis: | SUMMARY For many practical fluid flow problems, such as those found in I.C. engines and bio-devices, part or all of the boundaries are moving in space. An accurate and conservative representation of moving boundaries is essential for any numerical method. In this paper, a finite volume method is described to solve unsteady three-dimensional fluid flow problems with moving boundaries. The computational grid is allowed to move arbitrarily and to conform to the boundary motion. The approach could be categorized as an arbitrary Lagrangian-Eulerian method and has been designed for use on a general non-orthogonal grid. An extra geometric constraint called Space Conservation Law, is introduced and numerically implemented in an accurate and general way. This space conservation law is combined together with other conservation laws and the whole system is solved with a pressure-based numerical method on a non-staggered grid. Examples are given to demonstrate the importance of a fully conservative and accurate imple... |
| Databáze: | OpenAIRE |
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