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Validation Of Cfd Simulations For Hypersonic Flow Over A Yawed Circular Cone
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Book Synopsis Validation of CFD Simulations for Hypersonic Flow Over a Yawed Circular Cone by : Julian D. Cecil
Download or read book Validation of CFD Simulations for Hypersonic Flow Over a Yawed Circular Cone written by Julian D. Cecil and published by . This book was released on 2018 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study aims to numerically simulate the wind tunnel results for hypersonic flow over a circular cone of semi-apex angle of 10 degrees yawed from 0° to 20° using the commercial computational fluid dynamics software ANSYS Fluent. The ANSYS workbench is used to create the 10° semi-apex circular cone with a shock aligned structured mesh of 3.05 million cells surrounding the cone. Simulation boundary conditions for pressure and temperature in the far field correspond to Tracy's wind tunnel experiment at Cal Tech. The six simulations cases are conducted for yaw angles of 0, 8, 12, 16, 20 and 24 degrees. The unsteady Reynolds-Averaged compressible Navier-Stokes solver with Spalart-Allmaras (SA) turbulence model is employed. The upstream flow Mach number is M = 8 and Reynolds number is Re00 = 4.2 x105 based on cone generator length. The maximum variation in static pressure computations around the cone is 7% of the experimental values and the maximum variation in heat transfer computations is within 12% of the experimental values; the maximum difference between the computations and experiment occurs at the leeward meridian of the cone. By further refinement of the mesh and using other turbulence models, it is possible that computational accuracy of the simulations may be further improved; however it requires additional investigation. Nevertheless the present simulations demonstrate that CFD can be employed with sufficient accuracy to compute the hypersonic flows about space vehicles with fully turbulent flow.
Book Synopsis Hypersonic Flow Over a Yawed Circular Cone by : Richard Ripley Tracy
Download or read book Hypersonic Flow Over a Yawed Circular Cone written by Richard Ripley Tracy and published by . This book was released on 1963 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CFD Validation for Hypersonic Flight: Hypersonic Double-Cone Flow Simulations by :
Download or read book CFD Validation for Hypersonic Flight: Hypersonic Double-Cone Flow Simulations written by and published by . This book was released on 2006 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Turbulent Boundary Layer on a Yawed Cone in a Supersonic Stream by : Willis H. Braun
Download or read book Turbulent Boundary Layer on a Yawed Cone in a Supersonic Stream written by Willis H. Braun and published by . This book was released on 1959 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A CFD Validation Roadmap for Hypersonic Flows by :
Download or read book A CFD Validation Roadmap for Hypersonic Flows written by and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Angle of Attack and Bluntness on the Hypersonic Flow Over a 15 ̊semiapex Cone in Helium by : Joseph W. Cleary
Download or read book Effects of Angle of Attack and Bluntness on the Hypersonic Flow Over a 15 ̊semiapex Cone in Helium written by Joseph W. Cleary and published by . This book was released on 1970 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Study of Hypersonic Double-cone Experiments for Code Validation by : Ioannis Nompelis
Download or read book Computational Study of Hypersonic Double-cone Experiments for Code Validation written by Ioannis Nompelis and published by . This book was released on 2004 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781724976987 Total Pages :38 pages Book Rating :4.9/5 (769 download)
Book Synopsis A Cfd Validation Roadmap for Hypersonic Flows by : National Aeronautics and Space Administration (NASA)
Download or read book A Cfd Validation Roadmap for Hypersonic Flows written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-09 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A roadmap for computational fluid dynamics (CFD) code validation is developed. The elements of the roadmap are consistent with air-breathing vehicle design requirements and related to the important flow path components: forebody, inlet, combustor, and nozzle. Building block and benchmark validation experiments are identified along with their test conditions and measurements. Based on an evaluation criteria, recommendations for an initial CFD validation data base are given and gaps identified where future experiments would provide the needed validation data. Marvin, Joseph G. Ames Research Center NASA-TM-103935, A-92091, NAS 1.15:103935 RTOP 505-59-00...
Book Synopsis Verification and Validation of CFD Simulations by :
Download or read book Verification and Validation of CFD Simulations written by and published by . This book was released on 1999 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 26th AIAA Fluid Dynamics Conference by :
Download or read book 26th AIAA Fluid Dynamics Conference written by and published by . This book was released on 1995 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hybrid DSMC-CFD Simulations of Hypersonic Flow Over Sharp and Blunted Bodies by : Wen-Lan Wang
Download or read book Hybrid DSMC-CFD Simulations of Hypersonic Flow Over Sharp and Blunted Bodies written by Wen-Lan Wang and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 34th Aerospace Sciences Meeting & Exhibit by :
Download or read book 34th Aerospace Sciences Meeting & Exhibit written by and published by . This book was released on 1996 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Investigations of Transition in Hypersonic Flows Over Circular Cones by :
Download or read book Numerical Investigations of Transition in Hypersonic Flows Over Circular Cones written by and published by . This book was released on 2008 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on secondary instability mechanisms of high-speed boundary layers over cones with a circular cross section. Hypersonic transition investigations at Mach 8 are performed using Direct Numerical Simulations (DNS). At wind-tunnel conditions, these simulations allow for comparison with experimental measurements to verify fundamental stability characteristics. To better understand geometrical influences, flat-plate and cylindrical geometries are studied using after-shock conditions of the conical investigations. This allows for a direct comparison with the results of the sharp cone to evaluate the influence of the spanwise curvature and the cone opening angle. The ratio of the boundary-layer thickness to the spanwise radius is used to determine the importance of spanwise curvature effects. When advancing in the downstream direction the radius increaseslinearly while the boundary-layer thickness stays almost constant. Hence, spanwise curvature effects are strongest close to the nose and decrease in downstream direction. Their influences on the secondary instability mechanisms provide some rudimentary guidance in the design of future high-speed air vehicles. In experiments, blunting of the nose tip of the circular cone results in an increase in critical Reynolds number (c.f. Stetson et al. (1984)). However, once a certain threshold of the nose radius is exceeded, the critical Reynolds number decreases even to lower values than for the sharp cone. So far, conclusive explanations for this behavior could not be derived based on the available experimental data. Therefore, here DNS is used to study the effect of nose bluntness on secondary instability mechanisms in order to shed light on the underlying flow physics. To this end, three different nose tip radii are considered-the sharp cone, a small nose radius and a large nose radius. A small nose radius moves the transition on-set downstream, while for a large nose radius the so-called transition reversal is observed. Experimentalists hold influences of the entropy layer responsible but detailed numerical studies may lead to alternateconclusions.
Book Synopsis Surface Pressure Measurements for CFD Code Validation in Hypersonic Flow by :
Download or read book Surface Pressure Measurements for CFD Code Validation in Hypersonic Flow written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface Pressure Measurements for CFD Code Validation in Hypersonic Flow by : William L. Oberkampf
Download or read book Surface Pressure Measurements for CFD Code Validation in Hypersonic Flow written by William L. Oberkampf and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CFD Validation Studies for Hypersonic Flow Prediction by : Peter A. Gnoffo
Download or read book CFD Validation Studies for Hypersonic Flow Prediction written by Peter A. Gnoffo and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hypersonic Flow Over Cones by : Stanley A. Berger
Download or read book Hypersonic Flow Over Cones written by Stanley A. Berger and published by . This book was released on 1960 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Taylor-Maccoll equation for the supersonic flow of an ideal gas about a right circular cone with an attached shock wave is solved for the two cases of infinite free stream Mach numbers. The solution for the former is given in terms of an expansion in the limiting density ratio across the shock E(sub)L, and the solution to the latter in terms of a double expansion in the actual density ratio, E, and E(sub)L. The results are compared with a Taylor series solution to the Taylor-Maccoll equation and also with the exact values of Kopal for air and Mueller for helium. (Author).
