Comparison of PLIF and CFD Results for the Orion CEV RCS Jets | Zendy

Christopher Ivey | Zendy; Paul M. Danehy | Zendy; Brett F. Bathel | Zendy; Artem Dyakonov | Zendy; Jennifer A. Inman | Zendy; Stephen B. Jones | Zendy

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Comparison of PLIF and CFD Results for the Orion CEV RCS Jets

Author(s) -

Christopher Ivey,

Paul M. Danehy,

Brett F. Bathel,

Artem Dyakonov,

Jennifer A. Inman,

Stephen B. Jones

Publication year - 2011

Publication title -

50th aiaa aerospace sciences meeting including the new horizons forum and aerospace exposition

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.2011-713

Subject(s) - computational fluid dynamics , aerospace engineering , computer science , physics , mechanics , engineering

Nitric-oxide planar laser-induced fluorescence (NO PLIF) was used to visualize and measure centerline streamwise velocity of the Orion Crew Exploration Vehicle (CEV) Reaction Control System (RCS) Jets at NASA Langley Research Center's 31-Inch Mach 10 Air wind tunnel. Fluorescence flow visualizations of pitch, roll, and yaw RCS jets were obtained using different plenum pressures and wind tunnel operating stagnation pressures. For two yaw RCS jet test cases, the PLIF visualizations were compared to computational flow imaging (CFI) images based on Langley Aerothermal Upwind Relaxation Algorithm (LAURA) computational fluid dynamics (CFD) simulations of the flowfield. For the same test cases, the streamwise velocity measurements were compared to CFD. The CFD solution, while showing some unphysical artifacts, generally agree with the experimental measurements.

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