Code Validation Studies Of High Enthalpy Flows

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Code Validation Studies Of High Enthalpy Flows

Code Validation Studies Of High Enthalpy Flows written by Graham V. Candler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Aerodynamics, Hypersonic categories.

During the past three years, we have worked to develop and analyze a high-enthalpy flow dataset for CFD code validation. In collaboration with CUBRC Inc. personnel, we designed the experimental conditions for the double-cone geometry used in previous low-enthalpy nitrogen tests. We then used our standard CFD codes and thermo-chemical models to analyze these flows. In general, the comparisons with nitrogen flows are good, even at high enthalpy (10MJ/kg). But the comparisons between predictions and experiments for air above 5MJ/kg is poor. We find that as the enthalpy increases, the agreement gets worse. In particular, the CFD predicts that the separation zone decreases in size much more rapidly than given in the experiments.

A Review Of European Code Validation Studies In High Enthalpy Flow

A Review Of European Code Validation Studies In High Enthalpy Flow written by J. Muylaert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.

Experiments In Numerical Studies Of Low Density And Real Gas Effects On Regions Of Shock Wave Boundary Layer Interaction In Hypervelocity Flows

Experiments In Numerical Studies Of Low Density And Real Gas Effects On Regions Of Shock Wave Boundary Layer Interaction In Hypervelocity Flows written by Michael S. Holden and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Boundary layer categories.

Experiments with extensive numerical simulations were conducted examining effects of low density flows and real gas effects on aerothermal characteristics of flows in hypervelocity facilities and in simple and complex flowfields in hypervelocity flows. These studies demonstrated that in the absence of real gas effects the DSMC and Navier-Stokes solutions accounting for slip effects were in excellent agreement with measurements. An extensive series of calibration and validation studies were done defining the free stream flows in the LENS I and X tunnels for low density and high enthalpy flows at velocities up to 16,000 ft/s. Measurements on double cone configuration showed that above 13,000 ft/s the interaction regions differed significantly in nitrogen and air flows; while the computations agreed with the measurements in nitrogen, they differed significantly in the size and properties of interaction regions in air. With the shuttle configuration, we demonstrated that real gas effects decrease the size of a separated interaction region over the flap, reduce the pressure over the adjacent curved surfaces, and reduce Reynolds number for onset of boundary layer transition.

International Aerospace Abstracts

International Aerospace Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Aeronautics categories.

38th Aiaa Thermophysics Conference 05 4679 05 4956

38th Aiaa Thermophysics Conference 05 4679 05 4956 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Thermodynamics categories.

Advanced Hypersonic Test Facilities

Advanced Hypersonic Test Facilities written by Frank K. Lu and has been published by AIAA (American Institute of Aeronautics & Astronautics) this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Computers categories.

With the technical challenges that simulations of Mach 5-plus speeds pose for wind tunnel ground testing facilities, such testing has been characterized as "the art of partial simulation." Lu (mechanical and aerospace engineering, U. of Texas at Arlington) and Marren (Arnold Engineering Development Center, White Oak, MD) introduce 22 contributed chapters expanding the knowledge base on developments in hypersonic facilities in the past decade by focusing on testing principles; specific types of facilities (e.g., NASA's HYPULSE, LENS hypervelocity tunnels, and the U-12 large shock tube); and innovations including new instrumentation capabilities, advances in material sciences, and increasing international cooperation. Readers are referred elsewhere for treatment of perfect gas wind tunnels. Annotation copyrighted by Book News, Inc., Portland, OR

Experimental Heat Transfer Fluid Mechanics And Thermodynamics 1993

Experimental Heat Transfer Fluid Mechanics And Thermodynamics 1993 written by Matthew D. Kelleher and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with TECHNOLOGY & ENGINEERING categories.

Combustion Science At The End Of The Millennium

Combustion Science At The End Of The Millennium written by K. N. C. Bray and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Combustion categories.

45th Congress Of The International Astronautical Federation

45th Congress Of The International Astronautical Federation written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Aeronautics categories.

Aeronautical Engineering

Aeronautical Engineering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Aeronautics categories.

A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).