## Abstract

Implicit time-marching finite-difference methods for solving the two- and three-dimensional compressible Euler and Navier-Stokes equations are presented. The distinctive feature of these methods is to use the momentum equations of contravariant velocity components. By using such equations, accurate and easy treatments of the solid wall boundary condition are realized for the Euler equations, and simple treatments of he periodic boundary condition become possible for the impeller flows. The numerical method are based on the Beam-Warming delta-form approximate-factorization scheme, and take into consideration the diagonalization and upstreaming by the theory of characteristics. The computations of turbulent flows are implemented using the two-equation k-ε turbulence model with the law of the wall. Finally, some numerical results of transonic cascade flow are shown.

Original language | English |
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Pages (from-to) | 1943-1951 |

Number of pages | 9 |

Journal | Transactions of the Japan Society of Mechanical Engineers Series B |

Volume | 55 |

Issue number | 515 |

DOIs | |

Publication status | Published - 1989 |

Externally published | Yes |

## Keywords

- Compressible Flow
- Euler Equations
- Finite-Difference Method
- Implicit Time-Marching Method
- Navier-Stokes Equations
- Numerical Analysis
- Transonic Cascade Flow
- k-ɛ Turbulence Model

## ASJC Scopus subject areas

- Condensed Matter Physics
- Mechanical Engineering