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Showing 1 to 16 of 16 for “"shock boundary layer interaction"”.
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Large eddy simulation of shock boundary layer interaction control using micro-vortex generators
… surfaces can be critically affected by shock wave / boundary layer interactions (SBLIs), whose severe adverse pressure gradients can cause boundary layer separation. Currently such problems are avoided primarily through the use of boundary layer bleed/suction which can be a source of …
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A coupled Euler/Navier-Stokes algorithm for 2-D unsteady transonic shock/boundary-layer interaction
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Strip Film Schlieren-Interferometric Observation of the Effect of Reflected Shock-Boundary Layer Interaction on Reflected Shock Density in Several Gases
Made available in DSpace on 2014-12-09T18:12:20Z (GMT). No. of bitstreams: 1 6511775.pdf: 4880336 bytes, checksum: 148962069ae56c0ef97ba1d4085f9a6f (MD5) Previous issue date: 1965
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Patched grid solutions of the two dimensional Euler and thin-layer Navier-Stokes equations
… Patched grid results are demonstrated on shock reflection, subsonic boundary layer, and shock-boundary layer interaction flow problems. The results are compared with non-patched or single zone grids. The patched grid approach shows an improvement in resolution while minimizing storage and …
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Viscous solutions for the Navier Stokes equations using an upwind finite volume technique
… an upwind finite volume, two-dimensional, thin layer Navier Stokes solver to achieve complete Navier Stokes solutions is described. The shear stress and heat flux contributions are identified and transformed to a generalized coordinate system. The metrics which result from the transformation …
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Effects of Mach Number and Flow Incidence on Aerodynamic Losses of Steam Turbine Blades
… losses at transonic conditions is due to strong shock/boundary layer interaction that may lead to flow separation on the blade suction surface. From the measured total pressure coefficients, a modified loss model that accounts for higher losses at transonic conditions was developed. The new model …
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The effect of blade solidity on the aerodynamic loss of a transonic turbine cascade
… side near the throat and downstream of the shock/boundary layer interaction. Predicted downstream static pressure values agreed well with experimental values, except that the inviscid code tended to over-predict the pressure rise across the suction side shocks.
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Design and flow characterization of an indraft supersonic wind tunnel for scramjet testing
… systems, ignition and flame stabilization, shock-boundary layer interaction, and aero-thermo-elastic interactions in scramjet vehicles. An indraft-type tunnel was chosen for its simplicity, low capital investment, and low power requirement. Its main features are large windows for advanced …
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An hp-Adaptive Petrov-Galerkin Method for Steady-State and Unsteady Flow Problems
… to stabilize the solution in the vicinity of shock waves. For accurate representation of the geometric surfaces, high-order curved boundary meshes have been generated and the interior meshes have been deformed through the solution of a modified linear elasticity equation. A fully implicit …
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Model Reduction of Computational Aerothermodynamics for Multi-Discipline Analysis in High Speed Flows
… flows over deformed surfaces with shock-shock interaction and shock-boundary layer interaction. An additional focus of this dissertation is on the implementation and computation of results using the developed aerodynamic heating and pressure models in complex …
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Flow randomness and tip losses in transonic rotors
… plots and randomness calculations. Endwall boundary layer effects are thought to be much more predominant for the core compressor than for the two fans and are thereby the cause of the extent of the randomness in the core compressor flowfield. The randomness and losses for each rotor are …
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Exploratory physics-based turbulent flow modification using distributed computing architectures
… to a supersonic GPU accelerated turbulent shock boundary layer solver in an effort to leverage application of different feedback control techniques in future work. To orchestrate the execution of the hundreds of simulations required in this thesis, we present a distributed computing …
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The role of aerothermochemistry in double cone and double wedge flows
… iv) to extend the experimental database for shock wave boundary/layer interactions. An expansion tube is used to generate flows with enthalpies ranging from 2.2-8.0 MJ/kg (2-4 km/s) and Mach numbers from 4-7. The expansion tube is a novel impulse facility for accelerating a test gas to these …
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Interaction between a conical shock wave and a plane compressible turbulent boundary layer at Mach 2.05
U of I Only Restriction Lifted for Item 73181 on 2017-01-22T10:15:29Z.
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Numerical and experimental investigation of VG flow control for a low-boom inlet
The application of vortex generators (VGs) for shock/boundary layer interaction flow control in a novel external compression, axisymmetric, low-boom concept inlet was studied using numerical and experimental methods. The low-boom inlet design features a zero-angle cowl and relaxed isentropic …
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The fluid-structure interaction of an axisymmetric underexpanded jet flowing across an adjacent compliant surface
… growing interest in the area of fluid-structure interactions (FSIs) as we continue to push technological, engineering, and operational boundaries towards lighter and stronger structures at increasingly high speeds, pressures, and temperatures. The simultaneous acquisition of flowfield and …