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.
Results
Showing 1 to 20 of 51 for “"boundary-layer flows"”.
-
Transition in boundary layer flows
An experimental investigation of transition in boundary layer flows under the influence of various freestream conditions is described.<br/><br/>Velocity profiles are obtained automatically by means of a stepper-motor driven traverse mechanism which carries a hot wire probe connected to a constant …
-
On perturbed boundary layer flows
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1962.
-
High speed geological boundary layer flows
… following work is an investigation of high speed boundary layers in geological flows. In particular, it focuses on meteorite impact structures of the Martian double-layer ejecta (DLE) type and the Mount St. Helens eruption of 1980 which was hypothesized to be an underexpanded jet originally by …
-
Turbulent wave-current bottom boundary layer flows
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1989.
-
Turbulence structure and flow resistance in oscillatory boundary layer flows
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-12-01
-
Roughness Effects on Super Structures in Turbulent Boundary Layer Flows
… on large-scale structures within turbulent boundary layers, using wall-parallel stereoscopic Particle Image Velocimetry (PIV) at a Reynolds number of 1.3 × 106m−1. The data was collected at a distance of = 2.8 from the wall under adverse = 0.98, small = −0.04, and favorable = −0.60 pressure …
-
Wall Jet Boundary Layer Flows Over Smooth and Rough Surfaces
… smooth to fully rough). For the wall jet flows over 305 mm long patches of roughness, the displacement and momentum thicknesses were found to vary noticeably with the roughness grain size, but the maximum velocity, mixing layer length scale, y<SUB>/2</SUB>, and the boundary layer thickness …
-
Experimental and numerical investigation of turbulence in Stable Boundary Layer flows
… understanding of turbulence in stably stratified flows. An extensive literature review is presented on the mechanisms governing turbulence under stratified conditions, with a special focus on the Richardson number parameter, as it is often adopted as a switch to turn turbulence modelling on/off. …
-
The development and stability of some non-planar boundary-layer flows.
… the following features: a square corner; a wall boundary layer; and a semi-infinite physical domain. Part 1 of this thesis, comprising Chapters 2–5, considers the laminar flow parallel to a streamwise corner. In Chapter 2 we present an in-depth study of the laminar flow internal to a square …
-
Flat Plate Boundary Layer Flows Over Catalytic Surfaces for Micro-Combustion Applications
The reactive, flat plate, boundary layer flow over small size Pt plates was studied experimentally for the range of intermediate Reynolds numbers that pertain to micro-combustion applications. Methane-air and propane-air mixtures were burnt catalytically at varying, close-to-stoichiometric …
-
Hydrodynamic mechanisms of larval transport and settlement in oscillatory boundary layer flows
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
-
Experimental study of turbulent boundary layer flows over forward facing steps with different surface conditions.
… effects of different surface types on turbulent flows over forward facing steps. A particle image velocimetry technique was employed to conduct field velocity measurements at the mid-plane of the test channel at selected locations downstream to 68 step heights. Three surface conditions were …
-
Study of Far Wake of a Surface-Mounted Obstacle Subjected to Turbulent Boundary Layer Flows
… body), approximately of height equal to the boundary layer thickness at one of the measurement locations of the flow. The experiments were performed by varying the Reynolds number of the flow and manipulating the pressure gradient distributions using a NACA 0012 airfoil placed within the wind …
-
Effect of compressibility, suction, and heat transfer on the nonparallel stability of boundary-layer flows
… on the stability characteristics of boundary-layer flows within the framework of a complete nonparallel, linear, spatial stability theory. Included in the theory are disturbances due to velocity, Pressure, temperature, density, and transport properties as well as 'variations of the …
-
Boundary layer flows over sharp and spherically blunted cones at angle of attack to supersonic nonuniform free streams
… been developed to solve the problem of laminar boundary layers on sharp and spherically blunt cones at angle of attack to nonuniform supersonic free streams. A three-dimensional boundary-layer solution is used to solve sharp cone problems and the afterbody of blunt cone problems. An axisymmetric …
-
A study of velocity profile models and wall shear stress for two and three-dimensional turbulent boundary layer flows
… for two and three-dimensional incompressible flows was presented, with emphasis placed on those that had previously shown their ability to correlate experimental data taken under various conditions. This review included velocity profile models that seemingly could represent flows in which the …
-
Experimental and theoretical study of turbulent oscillatory boundary layers
… hydrodynamics of oscillatory turbulent bottom boundary layers, which is still not well understood. Therefore, the goal of this thesis is to improve the present experimental and theoretical understandings on this subject. A high-quality experimental study including a large number of tests which …
-
Numerical Investigation of Second-Order Effects in a Supersonic Boundary-Layer
<p>Historically, the study of boundary-layer flows has centered on the analysis of the first-order boundary-layer equations and their application to physical flow problems. However, selected “real-world” boundary-layer flows exhibit significant second-order effects which are neglected by the …
Page 1 of 3