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Calibration of Axisymmetric and Quasi-1D Solvers for High Enthalpy NozzlesThe proposed paper will present a numerical investigation of the flow characteristics and boundary layer development in the nozzles of high enthalpy shock tunnel facilities used for hypersonic propulsion testing. The computed flow will be validated against existing experimental data. Pitot pressure data obtained at the entrance of the test cabin will be used to validate the numerical simulations. It is necessary to accurately model the facility nozzles in order to characterize the test article flow conditions. Initially the axisymmetric nozzle flow will be computed using a Navier Stokes solver for a range of reservoir conditions. The calculated solutions will be compared and calibrated against available experimental data from the DLR HEG piston-driven shock tunnel and the 16-inch shock tunnel at NASA Ames Research Center. The Reynolds number is assumed to be high enough at the throat that the boundary layer flow is assumed turbulent at this point downstream. The real gas affects will be examined. In high Mach number facilities the boundary layer is thick. Attempts will be made to correlate the boundary layer displacement thickness. The displacement thickness correlation will be used to calibrate the quasi-1D codes NENZF and LSENS in order to provide fast and efficient tools of characterizing the facility nozzles. The calibrated quasi-1D codes will be implemented to study the effects of chemistry and the flow condition variations at the test section due to small variations in the driver gas conditions.
Document ID
20020005837
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Papadopoulos, P. E.
(Thermoscience Inst. Moffett Field, CA United States)
Gochberg, L. A.
(National Academy of Sciences - National Research Council Moffett Field, CA United States)
Tokarcik-Polsky, S.
(Sterling Software, Inc. Moffett Field, CA United States)
Venkatapathy, E.
(Thermoscience Inst. Moffett Field, CA United States)
Deiwert, G. S.
(NASA Ames Research Center Moffett Field, CA United States)
Edwards, Thomas A.
Date Acquired
August 20, 2013
Publication Date
January 1, 1994
Subject Category
Fluid Mechanics And Thermodynamics
Meeting Information
Meeting: 29th AIAA Thermophysics Conference
Location: San Diego, CA
Country: United States
Start Date: June 19, 1995
End Date: June 22, 1995
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
PROJECT: RTOP 505-70-62
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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