An Approximate Method For Calculating Three Dimensional Inviscid Hypersonic Flow Fields PDF Download
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Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 28 |
Release | : 2018-06-30 |
Genre | : |
ISBN | : 9781722063351 |
Download An Approximate Method for Calculating Three-Dimensional Inviscid Hypersonic Flow Fields Book in PDF, ePub and Kindle
An approximate solution technique was developed for 3-D inviscid, hypersonic flows. The method employs Maslen's explicit pressure equation in addition to the assumption of approximate stream surfaces in the shock layer. This approximation represents a simplification to Maslen's asymmetric method. The present method presents a tractable procedure for computing the inviscid flow over 3-D surfaces at angle of attack. The solution procedure involves iteratively changing the shock shape in the subsonic-transonic region until the correct body shape is obtained. Beyond this region, the shock surface is determined using a marching procedure. Results are presented for a spherically blunted cone, paraboloid, and elliptic cone at angle of attack. The calculated surface pressures are compared with experimental data and finite difference solutions of the Euler equations. Shock shapes and profiles of pressure are also examined. Comparisons indicate the method adequately predicts shock layer properties on blunt bodies in hypersonic flow. The speed of the calculations makes the procedure attractive for engineering design applications. Riley, Christopher J. and Dejarnette, Fred R. Langley Research Center RTOP 506-40-91-01...
Author | : National Aeronautics and Space Administration NASA |
Publisher | : |
Total Pages | : 27 |
Release | : 2018-10-23 |
Genre | : |
ISBN | : 9781729157510 |
Download An Approximate Method for Calculating Three-Dimensional Inviscid Hypersonic Flow Fields Book in PDF, ePub and Kindle
An approximate solution technique was developed for 3-D inviscid, hypersonic flows. The method employs Maslen's explicit pressure equation in addition to the assumption of approximate stream surfaces in the shock layer. This approximation represents a simplification to Maslen's asymmetric method. The present method presents a tractable procedure for computing the inviscid flow over 3-D surfaces at angle of attack. The solution procedure involves iteratively changing the shock shape in the subsonic-transonic region until the correct body shape is obtained. Beyond this region, the shock surface is determined using a marching procedure. Results are presented for a spherically blunted cone, paraboloid, and elliptic cone at angle of attack. The calculated surface pressures are compared with experimental data and finite difference solutions of the Euler equations. Shock shapes and profiles of pressure are also examined. Comparisons indicate the method adequately predicts shock layer properties on blunt bodies in hypersonic flow. The speed of the calculations makes the procedure attractive for engineering design applications. Riley, Christopher J. and Dejarnette, Fred R. Langley Research Center RTOP 506-40-91-01...
Author | : Christopher Joseph Riley |
Publisher | : |
Total Pages | : 32 |
Release | : 1990 |
Genre | : Aerodynamics, Hypersonic |
ISBN | : |
Download An Approximate Method for Calculating Three-dimensional Inviscid Hypersonic Flow Fields Book in PDF, ePub and Kindle
Author | : Christopher Joseph Riley |
Publisher | : |
Total Pages | : 150 |
Release | : 1988 |
Genre | : |
ISBN | : |
Download An Approximate Method for Calculating Inviscid Flow Fields Over Three-dimensional Blunt-nosed Bodies in Hypersonic Flow Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 316 |
Release | : 1990 |
Genre | : Astronautics |
ISBN | : |
Download NASA Technical Paper Book in PDF, ePub and Kindle
Author | : United States. National Aeronautics and Space Administration |
Publisher | : |
Total Pages | : 656 |
Release | : 1990 |
Genre | : Aeronautics |
ISBN | : |
Download NASA Technical Paper Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 590 |
Release | : 1992 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 244 |
Release | : |
Genre | : Aeronautics |
ISBN | : |
Download Research and Technology Objectives and Plans Summary Book in PDF, ePub and Kindle
"A compilation of the summary portions of each of the RTOPs used for management review and control of research currently in progress throughout NASA"--P. i.
Author | : United States. National Advisory Committee for Aeronautics |
Publisher | : |
Total Pages | : |
Release | : 1955 |
Genre | : Aeronautics |
ISBN | : |
Download Annual Report - National Advisory Committee for Aeronautics Book in PDF, ePub and Kindle
Includes the Committee's Technical reports no. 1-1058, reprinted in v. 1-37.
Author | : Jean-Antoine Desideri |
Publisher | : Springer |
Total Pages | : 268 |
Release | : 1992-01-17 |
Genre | : Science |
ISBN | : 9783540544289 |
Download Hypersonic Flows for Reentry Problems Book in PDF, ePub and Kindle
One of the most challenging problems of modern engineering is undoubtedly the prediction of hypersonic flows around space vehicles in reentry conditions. Indeed, the difficulties are numerous: first of all, these flows are very difficult to model, since very complex physical and chemical phenomena take place during the reentry phase; secondly, temperature, velocity and enthalpy are very high and densities are very low, making the reentry process very difficult to reproduce in ground-based experiments. The past three decades have seen important efforts in computational fluid dynam ics relying on the use of supercomputers to simulate these very complicated flows. The numerical simulation based on imperfect models and methods which were es sentially designed for transonic and supersonic flows has still a long way to go in order to be able to predict these hypersonic reentry flows very accurately. This situation has motivated very strong international cooperative efforts with, as the most visible consequences, the EuropelUnited States Short Courses on Hy personics, which were held in Paris, in 1987 [1,2], Colorado Springs in 1989 [3], and Aachen in 1990 [3]. The workshop on Hypersonics whose results are presented and analysed in these volumes is also a direct consequence of this international cooperation. This scien tific event was an initiative of P. Perrier, Head of the Theoretical Aerodynamics Department of DASSAULT AVIATION, who played a key role in the identification of the critical problems and the realisation of experiments, within the Hermes R&D program framework.