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Showing 1 to 20 of 42 for “"Hypersonic Flow"”.
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Dynamic pressure sensors for hypersonic flow measurements
… of an acoustic pressure sensor tailored for hypersonic boundary layer flow measurements. Hypersonic boundary layer flows comprise shocks, laminar-to-turbulent transitions, and high-frequency turbulence with small (sub 1-mm) characteristic length scales. Non-invasive acoustic pressure …
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Numerical Simulation of the Transition Region in Hypersonic Flow
… combines a fully laminar and fully turbulent flow field through the indeterminacy to form the transitional flow field. GASP is a compressible Navier-Stokes code which has a practical lower working limit of M = .1. The majority of experimental data for transitional flow exists below this limit. …
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Modeling of no radiative emission in non-equilibrium hypersonic flow
The thermochemistry of supersonic flows has been studies thoroughly in the context of military aircraft development. Similarly, High speed hypersonic flight has been studied by both defence and civilian entities in the context of re-entry vehicles and spaceflight more generally. Hypersonic flight …
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Numerical simulation of hypersonic flow over a blunt delta wing
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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Validation of CFD Simulations for Hypersonic Flow Over a Yawed Cone
… 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 …
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Study of Thermochemical Non-equilibrium and Sensor Cavity Geometry in Hypersonic Flow
… influence of geometric configurations within a hypersonic flow field on optical distortion, with a particular focus on the effects of window deformation and the role of thermochemical modeling compared to perfect gas assumptions. Turbulent RANS and conjugate heat transfer were used to model …
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Surface Curvature and Roughness Effects on Görtler Vortex Development in Hypersonic Flow
… on the development of Görtler vortices in hypersonic flow. Three-dimensional large eddy simulation (LES) was performed for two curvature cases using US3D, an unstructured-grid finite volume computational fluid dynamics (CFD) solver. Experiments were performed on two curvature cases and …
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The boundary layer over a long blunt flat plate in hypersonic flow
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1961.
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Investigation of Multi-Photon Excitation in Argon with Applications in Hypersonic Flow Diagnostics
… are essential for studying the physics of hypersonic flow wake regions. To advance the development of next generation hypersonic vehicles and to improve computational fluid dynamics techniques in the hypersonic regime, NASA needs a suitable non-intrusive diagnostic technique to measure …
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Fiber Optic Sensing of Strain and Temperature for Structures in a Hypersonic Flow
… temperature and strain data of a structure in a hypersonic flow. To that end, the design and testing of a five-fiber Bragg grating sensor array mounted on a thin rectangular compliant panel in a Mach 6 hypersonic flow is pursued. Each FBG sensor can capture both panel vibration and temperature …
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Study of Cavity Geometry to Improve Optical Quality of Windows in Hypersonic Flow
… of the window-air system of a flight vehicle in hypersonic flow is simulated. The optical distortion of the window-air system is the metric of merit. Within the earth’s atmosphere, vehicles at hypersonic speeds may generate viscous and high-temperature thermal boundary layers. These boundary …
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Kinetic Study of the Hypersonic Flow Past the Leading Edge of a Flat Plate
Made available in DSpace on 2014-12-09T17:13:45Z (GMT). No. of bitstreams: 1 6901336.pdf: 1915080 bytes, checksum: a97aa017df66b7d6fe81eaab1802b592 (MD5) Previous issue date: 1968
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DEVELOPMENT OF KRYPTON PLANAR LASER INDUCED FLUORESCENCE METHODS FOR THE MEASUREMENT OF HYPERSONIC FLOW CONDITIONS
Conventional wind tunnel flow measurement techniques typically involve the use of intrusive sensor systems, such as Pitot-probes and transducers which come in contact with the flow. Intrusive methods become impractical for high Mach number flows, as such methods can cause considerable disruption to …
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Application of the method of integral-relations to supersonic and hypersonic flow past paraboloids of revolution
… equations were then applied to a supersonic and hypersonic flow past a paraboloid of revolution. The shock shapes, shock wave detachment distances, locations of sonic lines; and velocity and pressure distributions for the body were calculated for γ = 1.4 and y = 5/3, and at Mach numbers of 3, 4, …
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Improving the Performance of Re-entry Vehicle in Hypersonic Flow by Morphing Nose cone by Bio-Mimicking Honey Bee Abdomen
… diminishes the range of motion and flexibility. Hypersonic re-entry vehicles are affected greatly by the gravity of the earth that results the vehicle damage due to high temperature and drag. So, reduce drag in atmosphere, the surface temperature and to improve the performance of re-entry …
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Asymptotic analysis of hypersonic boundary layers over an adiabatic wall with deformations
… the achievement of a man made vehicle attaining hypersonic speeds in the late 1940's, hypersonic flow quickly became a field great interest. Early on, in the 50's and 60's, analytic methods for hypersonic flow were developed by early pioneers of the field, but by the late 60's and into the 70's …
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Hypersonic heat transfer and anisotropic visualization with a higher order discontinuous Galerkin finite element method
… used to predict heat transfer to a cylinder in a hypersonic flow. The strong shock is captured with a Laplacian artificial viscosity term. On average, the results are in agreement with an existing hypersonic benchmark. Second, this work improves the visualization of the higher order polynomial …
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The Effects of Rarefaction and Thermal Non-Equilibrium on a Blunt Body and a Bicone in Hypersonic Flow and Their Shape Optimization for Reducing Both Drag and Heat Transfer
… pose many challenging problems due to their hypersonic speeds since they need to travel through different flow regimes due to changes in the density of the atmosphere with altitude. Some of the key characteristics associated with hypersonic flow are extremely high temperatures and heat …
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A numerical study of hypersonic flows using the full Navier-Stokes equations with different air models
… a real gas are investigated numerically in the hypersonic flow regime.
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