| タイトル | Investigation of Low-Reynolds-Number Rocket Nozzle Design Using PNS-Based Optimization Procedure |
| 本文（外部サイト） | http://hdl.handle.net/2060/19970004933 |
| 著者（英） | Korte, John J.; Hussaini, M. Moin |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1996-11-01 |
| 言語 | eng |
| 内容記述 | An optimization approach to rocket nozzle design, based on computational fluid dynamics (CFD) methodology, is investigated for low-Reynolds-number cases. This study is undertaken to determine the benefits of this approach over those of classical design processes such as Rao's method. A CFD-based optimization procedure, using the parabolized Navier-Stokes (PNS) equations, is used to design conical and contoured axisymmetric nozzles. The advantage of this procedure is that it accounts for viscosity during the design process; other processes make an approximated boundary-layer correction after an inviscid design is created. Results showed significant improvement in the nozzle thrust coefficient over that of the baseline case; however, the unusual nozzle design necessitates further investigation of the accuracy of the PNS equations for modeling expanding flows with thick laminar boundary layers. |
| NASA分類 | Aerodynamics |
| レポートNO | 97N12934
NASA-TM-110295
NAS 1.15:110295 |
| 権利 | No Copyright |
