Global ETD Search
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 204 for “"Shear Layer"”.
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Experiments on free shear layer transition,
Thesis (Sc D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1970.
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Vortex simulation of the reacting shear layer
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1989.
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Very near-nozzle shear-layer turbulence and jet noise
… investigation of the influence of the initial shear layer thickness to answer some long-standing questions regarding the role of turbulence inflow conditions on jet noise. These are important both for predictive simulation and lab-scale experiments. One of the principal challenges in the …
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Wave-induced centrifugal instability in a stratified shear layer
Thesis. 1975. M.S.--Massachusetts Institute of Technology. Dept. of Meteorology.
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Numerical study of turbulent combustion in a shear layer
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Direct numerical simulation of large bubbles in a free shear layer
… spherical, and ellipsoidal bubbles in a free shear layer. This approach allows direct simulation of the multiphase flow by wholly incorporating the bubble flow field in conjunction with the large scale vortical structures of the liquid. The role of large bubbles in modifying finite Reynolds …
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Measurements in a compressible planar shear layer with a thermal gradient
Experiments on a compressible planar shear layer with a sharp thermal gradient between the mixing streams were conducted with the goal of adding to a set of benchmark computational fluid dynamics validation datasets for unheated mixing layers as well as obtaining the first temperature measurements …
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Investigation of the shear layer versus the last closed flux surface on TEXT-upgrade
… to determine the locations of features in the shear layer, specifically the flux surface where Er=0, and of the last closed flux surface (LCFS). This is done for several different magnetic configurations. These results are then compared to results obtained from other tokamaks.
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Shift - flap : Shear-layer instabilities and flow transition – A fundamental link to airfoil performance
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Effects of the geometric modifications on the shear layer excitation source in co-axial side branches
… study delves into the interaction between shear layer oscillations and the acoustic field within co-axial cavities, spotlighting the efficacy of the sound source model as a reliable semi-empirical modeling methodology. The focus is on how the downstream acoustic boundary conditions, when …
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Investigation of the water-sided shear layer at a wind-driven wavy surface by active thermography
… advanced and used for measuring the mean viscous shear stress in the water-sided boundary layer of a wind driven air-water interface in the presence of water waves, at low wind speeds up to u 10 = (4.8 ± 0.3) m/s. Higher wind speeds of up to u 10 = (10.7 ± 0.7) m/s were considered to explore the …
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Control of mixing in a nonreactive plane shear layer: I. Open-loop control. II. Feedback control.
… and regulation of mixing in a nonreactive plane shear layer has been developed in a two-stream closed-return water facility. Mixing of a passive scalar is estimated using a thermal analog in which the two streams have uniform, steady temperatures differing by 3°C. The position of the temperature …
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Aspirating probes for measurement of mean concentration and fluctuating quantities in supersonic air/helium shear layer
… to make measurements in supersonic air/helium shear layers. The first probe is designed to measure local mean gas composition and is referred to as the mean concentration probe. This probe consists of a constant temperature hot-film sensor operating in a channel with a choked exit. The flow …
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The aeroacoustics response and shear layer dynamics of confined cavities subject to low Mach number turbulent flow
… to interaction between the instability of the shear layer and the acoustic modes of a given system. This thesis experimentally investigates the aeroacoustics response of cylindrical cavities having aspect ratios of h/L = 0.5, 1, and 1.5, where h is the cavity depth and L is the shear layer …
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Experimental and Mathematical Modeling of the Interaction of a Perturbed Free Shear Layer With a Flat Plate
… the upstream effects of the impingement of shear layers on a solid boundary located in the linear region of the shear layer is developed. The model is compared with experimental results. The experimental results and the model suggest that the oscillations that are most amplified are those …
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Fluctuating Pressure and Velocity Fields in the Near Field of a Round Jet (Turbulent, Shear Layer, Triple-Wire, Self-Preserving, Hot)
… linearized voltages were taken in the turbulent shear layer of a 6.35 cm diameter jet and analyzed by the algorithm. The results appear to support the methodology of the algorithm. The mechanisms that cause some of the samples to reside outside the realizable domain are discussed.
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A Study of the Reattachment of A Turbulent Supersonic Shear Layer With the Closure Condition Provided by A Control Volume Analysis
Made available in DSpace on 2014-12-10T22:48:13Z (GMT). No. of bitstreams: 1 7212174.pdf: 3024763 bytes, checksum: b687fff5d3e846bcd81a0beda969f446 (MD5) Previous issue date: 1971
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A Study of Compressible Turbulent Free Shear Layers Using Laser Doppler Velocimetry (Supersonic Flow, Mixing, Recirculating)
… two-dimensional planar, turbulent free shear layers formed by the separation of a Mach 2.43 flow over a backward facing step was conducted. Two different wind tunnel test sections were used to achieve a constant pressure separation of the shear layer at the backstep corner so that the …
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