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Showing 1 to 11 of 11 for “"SBLI"”.
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The relationship between surface geometry and transonic intake performance during off-design climb
… a severe shock wave--boundary-layer interaction (SBLI) that greatly increases the ingested incompressible boundary-layer displacement thickness, \(\delta_i^*\), and shape factor, \(H_i\). Simulating these conditions without validation is challenging, and poor optical access has inhibited …
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Quantification of Spalart-Allmaras Turbulence Modeling Uncertainties for Hypersonic Flows Utilizing Output-Based Grid Adaptation
… such as shock wave-boundary-layer interactions (SBLI). The adapted meshes are generated using MIT Solution Adaptive Numerical Simulator (SANS) software, which is able to adapt high order unstructured meshes using a modified Continuous Galerkin (CG) finite element method (FEM) discretization. The …
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The fluid-structure interaction of an axisymmetric underexpanded jet flowing across an adjacent compliant surface
… of a prominent shock/boundary-layer interaction (SBLI) near the wall, replacing the traditional first-cell Mach disk structure. Surface pressure was found to decrease within the initial jet expansion region, and to be approximately constant within the separation region, and to increase near the …
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Sidewall effects in compression corner shock-wave/boundary-layer interactions
… When a shock wave boundary layer interaction (SBLI) occurs in a rectangular cross sectioned duct, the streamwise corner flows tend to separate, resulting in highly three-dimensional behaviour in the sidewall region. These corner separations have been seen to influence the ‘quasi-2D’ primary …
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Evaluation of a displacement-body model for hypersonic shock-wave/boundary-layer interaction
… shock-wave/boundary-layer interaction (SBLI) is presented and evaluated. The model considers 2-D flow over a flat plate with an adiabatic wall. The separation bubble is modeled as a displacement body with constant surface pressure, the value of which is set equal to the value of plateau …
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Normal Shock Wave-Boundary Layer Interactions in Transonic Intakes at Incidence
… of shock-wave boundary layer interactions (SBLI) is crucial, as these phenomena have a severe effect on the stability of the flow inside the nacelle. The available literature is rather scarce and unable to assess the nature and severity of SBLIs, which remain to be addressed in the context …
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Corner effects for oblique shock wave/turbulent boundary layer interactions in rectangular channels
… with the turbulent boundary layer (oblique SBLI) both on the bottom wall and in the corner formed by the intersection of the floor with the side-walls. In such a scenario, shock-induced separation is often seen in each of the streamwise corners, resulting in a highly three-dimensional flow …
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An experimental rig to investigate crosswind effects on intake flow behaviour
Aerospace design engineers are being pushed to invent greener and more efficient technology. The next generation of turbofan engines aims to drastically reduce their carbon emissions by improving propulsive efficiency. To accomplish this low fan pressure ratio, large engine technology has been …
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Shock oscillation mechanisms of highly separated transitional shock-wave/boundary-layer interactions
… shock-wave/boundary-layer interactions (SBLIs) with the work arising from the occurrence and mitigation of shock oscillation-induced unsteadiness in transonic fans operating at low Reynolds numbers. The focus of the study is to investigate a particular shock oscillation mechanism. The …
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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 …