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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"pressure sensitive paint"”.
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Development of the Pressure-Sensitive-Paint Technique for Advanced Turbomachinery Applications
A new pressure-measurement technique which employs the tools of molecular spectroscopy has recently received considerable attention in the fluid mechanics community. Measurements are made via oxygen-sensitive molecules attached to the surface of interest as a coating, or paint. The …
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Validation of 3-D ice accretion documentation and replication method including pressure-sensitive paint
… aerodynamic performance, surface and wake pressures, and pressure-sensitive paint (PSP) data. The 3-D features of the tested ice shapes necessitated the use of a technique capable of obtaining high resolution data. The PSP technique allowed pressure coefficient data to be obtained over a …
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Supersonic flow field visualization studies of the MÅ = 6 price waverider planform
… (top-view) mounted shadowgraph pictures and pressure sensitive paint images were taken at pitch angles of â ¿ = 0Šʺ, 2Šʺ and 4Šʺ. The Mach 4 shadowgraph and pressure sensitive paint results correlate well with previous CFD results using the three-dimensional Price waverider model. The …
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High speed geological boundary layer flows
… distances. The flow field was investigated using pressure sensitive paint, shear stress sensitive film, and schlieren. Schlieren images show resulting shock interaction with the plate boundary and are compared to the separation of the two blast zones at Mount St. Helens. Pressure sensitive paint …
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Multi-Row Film Cooling Boundary Layers
… particle image velocimetry, hot wire anemometry, pressure sensitive paint and discrete gas sampling.
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Assessment of shaped film cooling holes at high density ratios for gas turbine cooling using S-PIV and PSP.
… effectiveness measurements obtained through a pressure sensitive paint (PSP) technique. Flow vorticity distributions are derived from velocity measurements. Results clearly show that film cooling is enhanced by dispersing coolant from racetrack shaped inlets and incorporating anti-vortex …
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The effects of micro-vortex generators on normal shock wave/boundary layer interactions
… coefficient) through a SWBLI, increasing pressure recovery, and reducing flow distortion at the aerodynamic interface plane while adding minimal drag to the system. The investigation encompasses experiments in both small-scale and large-scale inlet testing, allowing multiple test beds for …
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An experimental investigation of transverse jets in supersonic crossflow
… and to present the mean and fluctuating pressure loads on the wall around the jet port beneath the TJISC. The flow field was visualized using two types of schlieren methods, meanwhile, the mean and pressure fluctuation distributions beneath the TJISC were measured by Pressure-Sensitive …
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Study of hypersonic aerodynamics using free flight experiments
… result. The differentiation process is very sensitive to noise, hence will introduce uncertainty. The technique was applied to sub-scale models of ESA’s HEXAFLY-INT flight test vehicle. The significant regions of an AEDB constructed in this way compared well with numerical predictions and …
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Corner effects for oblique shock wave/turbulent boundary layer interactions in rectangular channels
… flow field is studied using flow visualisation, Pressure Sensitive Paint and Laser Doppler Anemometry. A nominal freestream Mach number of 2.5 is used for all experiments with a unit Reynolds number of 40×10$^{6}$m$^{−1}$, and the shock-generator angle is set to 8°. The flow conditions are chosen …
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The relationship between surface geometry and transonic intake performance during off-design climb
… facility supports high-speed schlieren imaging, pressure-sensitive paint, laser Doppler velocimetry and oil-flow visualisation. A Q2D transonic SBLI formed on the intake front-lip in each test-case, and the test-cases have shock strengths in the range of \(M_s = 1.14 - 1.64\) and an order of …
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An Integrated Aerodynamic-Ramp-Injector/ Plasma-Torch-Igniter for Supersonic Combustion Applications with Hydrocarbon Fuels
… methods: shadowgraphs, surface oil flow, pressure-sensitive paint, high- or low-speed photography, aerothermodynamic sampling, and spectroscopy. During this research effort, a new mixing parameter was also developed to quantify the injector plume mass fraction concentration values using …
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Study Of Heat Transfer Characteristics Of Impinging Air Jet Using Pressure Andn Temperature Sensitive Luminescent Paint
… is a relatively new technology for quantitative pressure and temperature measurement. Usually referred to as Pressure Sensitive Paint (PSP) and Temperature Sensitive Paint (TSP), luminescent coatings contain sensor molecules, which undergoes a luminescent transition when excited with light of …
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Sidewall effects in compression corner shock-wave/boundary-layer interactions
… schlieren photography, oil-flow visualisation, Pressure Sensitive Paint, and Laser Doppler Velocimetry. The flows are all separated in the baseline case. The Mach 2.5 and 3.5 baseline cases both show quasi-2D separations for the majority of the tunnel span, while the Mach 1.5 baseline shows …
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Control of supersonic axisymmetric base flows using passive splitter plates and pulsed plasma actuators
… photography, surface flow visualization, pressure-sensitive paint, and discrete surface pressure measurements. Using a blowdown-type wind tunnel reconstructed specifically for these studies, baseline axisymmetric experiments without control were conducted for a nominal approach Mach number …
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Innovative Transverse Jet Interaction Arrangements in Supersonic Crossflow
… injector would alleviate the large region of low pressure typically found downstream of a normal, sonic injector in supersonic flow and also possibly increase in intensity of the upstream high-pressure region. The secondary jet would, in theory, "push" the primary jet further into the flow, …
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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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Fundamental physics and application of plasma actuators for high-speed flows
… In the laser-spark system, the effect of ambient pressure in the range of 0.1 to 1.0 atm and wavelength (266 nm and 532 nm) on the size, temperature, electron number density, and fraction of laser energy absorbed in a laser-induced plasma in air has been conducted. The plasma was generated by …
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The fluid-structure interaction of an axisymmetric underexpanded jet flowing across an adjacent compliant surface
… stronger structures at increasingly high speeds, pressures, and temperatures. The simultaneous acquisition of flowfield and structural conditions in fullfield has recently become a priority for the FSI community, but it presents a significant experimental challenge, and only a few studies to-date …