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Investigation of low-reynolds-number rocket nozzle design using pns-based optimization procedure
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hussaini, M. Moin Korte, John J. |
| Copyright Year | 1996 |
| Description | 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. |
| File Size | 833075 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19970004933 |
| Archival Resource Key | ark:/13960/t3qv8fz73 |
| Language | English |
| Publisher Date | 1996-11-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Navier-stokes Equation Low Reynolds Number Viscosity Rocket Nozzles Nozzle Geometry Conical Nozzles Coordinate Transformations Nozzle Design Laminar Boundary Layer Computational Fluid Dynamics Nozzle Thrust Coefficients Polynomials Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
