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 83 for “"Turbulent boundary layers"”.
-
Some unsteady features of turbulent boundary layers
… zero and favorable pressure gradient turbulent boundary layers, the unsteadiness in the form of turbulent fluctuations was investigated. Phase ensemble-averaged flow characteristics of a large amplitude periodic unsteady turbulent boundary layer was also investigated at a reduced …
-
Modeling of Compressibility Effects in Turbulent Boundary Layers
… much influence on the dynamics of the supersonic boundary layer; the fluctuating thermal component was studied as the only source of compressibility effects in the boundary layer. An approach to the study of thermal compressibility effects and a possible way to draw a parallel between …
-
On Separation, Reattachment and Redevelopment of Turbulent Boundary Layers
Made available in DSpace on 2014-12-05T19:16:00Z (GMT). No. of bitstreams: 1 6104353.pdf: 4085551 bytes, checksum: fe26ade471272ea45e13fde7a623540a (MD5) Previous issue date: 1961
-
Upstream history and apparent stress in turbulent boundary layers.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1966. Ph.D.
-
Turbulent boundary layers on an airfoil in unsteady flow
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1984.
-
Near Wall Investigation of Three Dimensional Turbulent Boundary Layers
… study for four different three-dimensional turbulent flows. The investigation focuses on near wall measurements in these flows. Several experimental techniques are used in the studies; however, the bulk of the investigation focuses on a three-orthogonal-velocity-component fiber-optic laser …
-
Near-wall similarity in three-dimensional turbulent boundary layers
This work investigates three main topics. The first of these is the development and comparison of time integration schemes on two-dimensional unstructured meshes. Both explicit and implicit solution algorithms for the two-dimensional Euler equations on unstructured grids are presented. …
-
The numerical simulation of turbulent boundary layers and film cooling
… the inflow conditions for the simulation of turbulent boundary layers, a dynamic recycling method was proposed. In addition, a characteristic boundary condition method was suggested for the outlet boundary conditions of external wall shear flows. The implementation of the methods was …
-
Near-wall velocity measurements in two-dimensional turbulent boundary layers
… near-wall velocity profiles in two-dimensional turbulent boundary layers when such data was plotted on law of the wall coordinates were reported by D. Coles in the Stanford Conference. These discrepancies can be especially important when near-wall velocity data is used to infer the local wall …
-
Contributions to the Understanding of Turbulent Boundary Layers Over Curved Walls
… was conducted to investigate the DARPA Suboff boundary layer. To emphasize the axisymmetric boundary layer, the generic submarine model's sail, appendages, and propeller were omitted. The study focused on the afterbody from 70–95% of the model length to examine the concurrent pressure gradient …
-
Mean Force Structure and Scaling of Rough-Wall Turbulent Boundary Layers
… data from zero pressure gradient, rough-wall turbulent boundary layers are used to clarify the nature of the leading order balances across the boundary layer. These existing data are augmented by data from a judiciously chosen set of experiments performed at the University of New Hampshire. …
-
Open channel turbulent boundary layers and wall jets on rough surfaces
… understanding and ability to predict rough wall turbulent flows lags far behind the corresponding technology for smooth surfaces. This provides reasonable grounds for additional refined rough wall measurements with the expectation of improving our physical understanding of practically relevant …
-
Turbulent boundary layers under complex spatial and temporal pressure gradient histories
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
-
Microsensors for the measurement of shear forces in turbulent boundary layers
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1988.
-
Near-wall similarity in two- and three-dimensional turbulent boundary layers
Static pressure, mean velocity, indirect wall shear from Preston tubes, direct wall shear using a two-dimensional (single line of action) floating element device, and direct wall shear measurements from an omnidirectional floating element capable of simultaneously determining magnitude and …
-
The effects of periodic wake disturbances on flat-plate turbulent boundary layers
… unsteady periodic wakes that interact with the boundary layer and free stream flows about downstream blades. This study modelled these flow conditions, with circular cylinders periodically traversing in front of a turbulent flat plate boundary layer inside a low speed wind tunnel. These cylinder …
-
An Experimental Investigation of Pressure Fluctuations in Three-Dimensional Turbulent Boundary Layers
… surface pressure fluctuations beneath several turbulent boundary layers of practical interest. Pressure fluctuations in turbulent boundary layers are a source of noise and vibration that can accelerate structural fatigue. Pressure fluctuations and their correlation with velocity fluctuations is …
Page 1 of 5