Loading...
Please wait, while we are loading the content...
Similar Documents
Pressure measurements in a low-density nozzle plume for code verification
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Meissner, Dana L. Dewitt, Kenneth J. Penko, Paul F. Boyd, Iain D. |
| Copyright Year | 1991 |
| Description | Measurements of Pitot pressure were made in the exit plane and plume of a low-density, nitrogen nozzle flow. Two numerical computer codes were used to analyze the flow, including one based on continuum theory using the explicit MacCormack method, and the other on kinetic theory using the method of direct-simulation Monte Carlo (DSMC). The continuum analysis was carried to the nozzle exit plane and the results were compared to the measurements. The DSMC analysis was extended into the plume of the nozzle flow and the results were compared with measurements at the exit plane and axial stations 12, 24 and 36 mm into the near-field plume. Two experimental apparatus were used that differed in design and gave slightly different profiles of pressure measurements. The DSMC method compared well with the measurements from each apparatus at all axial stations and provided a more accurate prediction of the flow than the continuum method, verifying the validity of DSMC for such calculations. |
| File Size | 874106 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910019914 |
| Archival Resource Key | ark:/13960/t3wt3kq0j |
| Language | English |
| Publisher Date | 1991-01-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Propulsion And Power Low Density Flow Computerized Simulation Nitrogen Monte Carlo Method Plumes Computer Programs Numerical Analysis Exhaust Nozzles Nozzle Flow Continuums Near Fields Pressure Measurement Kinetic Theory Viscous Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
