Loading...
Please wait, while we are loading the content...
Similar Documents
Spatially and temporally resolved measurements of velocity in a h2-air combustion-heated supersonic jet
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bivolaru, Daniel Cutler, Andrew D. Danehy, Paul M. Baurle, Robert a. Gaffney, Richard L. |
| Copyright Year | 2009 |
| Description | This paper presents simultaneous measurements at multiple points of two orthogonal components of flow velocity using a single-shot interferometric Rayleigh scattering (IRS) technique. The measurements are performed on a large-scale Mach 1.6 (Mach 5.5 enthalpy) H2-air combustion jet during the 2007 test campaign in the Direct Connect Supersonic Combustion Test facility at NASA Langley Research Center. The measurements are performed simultaneously with CARS (Coherent Anti-stokes Raman Spectroscopy) using a combined CARS-IRS instrument with a common path 9-nanosecond pulsed, injection-seeded, 532-nm Nd:YAG laser probe pulse. The paper summarizes the measurements of velocities along the core of the vitiated air flow as well as two radial profiles. The average velocity measurement near the centerline at the closest point from the nozzle exit compares favorably with the CFD calculations using the VULCAN code. Further downstream, the measured axial velocity shows overall higher values than predicted with a trend of convergence at further distances. Larger discrepancies are shown in the radial profiles. |
| File Size | 356499 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20090007699 |
| Archival Resource Key | ark:/13960/t8ff8rk46 |
| Language | English |
| Publisher Date | 2009-01-05 |
| Access Restriction | Open |
| Subject Keyword | Rayleigh Scattering Computational Fluid Dynamics Yag Lasers Measuring Instruments Raman Spectroscopy Air Flow Supersonic Combustion Heating Supersonic Jet Flow Flow Velocity Radial Velocity Velocity Measurement Interferometry Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
