An efficient shock-capturing scheme for simulating compressible homogeneous mixture flow
| Autor: | Cong-Tu Ha, Chul-Min Jung, Son-Tung Dang, Warn-Gyu Park |
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| Rok vydání: | 2016 |
| Předmět: |
Shock wave
Jet (fluid) Discretization Mechanical Engineering Mechanics Conical surface 01 natural sciences 010305 fluids & plasmas Shock (mechanics) Physics::Fluid Dynamics 010101 applied mathematics symbols.namesake Classical mechanics Mach number Mechanics of Materials 0103 physical sciences symbols Compressibility Cylinder 0101 mathematics Navier–Stokes equations Supercavitation Mathematics |
| Zdroj: | Journal of Mechanical Science and Technology. 30:3969-3983 |
| ISSN: | 1976-3824 1738-494X |
| DOI: | 10.1007/s12206-016-0809-y |
| Popis: | This work is devoted to the development of a procedure for the numerical solution of Navier-Stokes equations for cavitating flows with and without ventilation based on a compressible, multiphase, homogeneous mixture model. The governing equations are discretized on a general structured grid using a high-resolution shock-capturing scheme in conjunction with appropriate limiters to prevent the generation of spurious solutions near shock waves or discontinuities. Two well-known limiters are examined, and a new limiter is proposed to enhance the accuracy and stability of the numerical scheme. A sensitivity analysis is first conducted to determine the relative influences of various model parameters on the solution. These parameters are adopted for the computation of water flows over a hemispherical body, conical body and a divergent/convergent nozzle. Finally, numerical calculations of ventilated supercavitating flows over a hemispherical cylinder body with a hot propulsive jet are conducted to verify the capabilities of the numerical scheme. |
| Databáze: | OpenAIRE |
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