Implicit preconditioned numerical schemes for the simulation of three-dimensional barotropic flows(Theses (Scuola Normale Superiore))

应用数学

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出  版 社
出版时间
2007年09月12日
装      帧
ISBN
9788876423109
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页      码
206
开      本
语      种
英文
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图书简介
Starting from a specific industrial problem related to the propellant flow within a liquid propellant rocket engine, a numerical method for simulating three-dimensional, generic barotropic flows in rotating frames is developed. A novel finite volume compressible approach for unstructured grids is proposed, suitably preconditioned for accurately dealing with nearly-incompressible flows. The time-advancing is performed by a novel, generic, linearized implicit scheme. A constructive procedure for solving the one-dimensional Riemann problem associated with a generic convex barotropic state law is presented as well. All the proposed numerical ingredients are validated against one-dimensional exact solutions or three-dimensional experimental data related to complex, industrial flows also involving cavitation phenomena.
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