| タイトル | Rapid Numerical Simulation of Viscous Axisymmetric Flow Fields |
| 本文（外部サイト） | http://hdl.handle.net/2060/19960008034 |
| 著者（英） | Chima, Rodrick V.; Tweedt, Daniel L. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1995-11-01 |
| 言語 | eng |
| 内容記述 | A two-dimensional Navier-Stokes code has been developed for rapid numerical simulation of axisymmetric flow fields, including flow fields with an azimuthal velocity component. The azimuthal-invariant Navier-Stokes equations in a cylindrical coordinate system are mapped to a general body-fitted coordinate system, with the streamwise viscous terms then neglected by applying the thin-layer approximation. Turbulence effects are modeled using an algebraic model, typically the Baldwin-Lomax turbulence model, although a modified Cebeci-Smith model can also be used. The equations are discretized using central finite differences and solved using a multistage Runge-Kutta algorithm with a spatially varying time step and implicit residual smoothing. Results are presented for calculations of supersonic flow over a waisted body-of-revolution, transonic flow through a normal shock wave in a straight circular duct of constant cross sectional area, swirling supersonic (inviscid) flow through a strong shock in a straight radial duct, and swirling subsonic flow in an annular-to-circular diffuser duct. Comparisons between computed and experimental results are in fair to good agreement, demonstrating that the viscous code can be a useful tool for practical engineering design and analysis work. |
| NASA分類 | AIRCRAFT PROPULSION AND POWER |
| レポートNO | 96N15200
NASA-TM-107103
NAS 1.15:107103
AIAA PAPER 96-0449
E-10001
NIPS-95-06277 |
| 権利 | No Copyright |
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