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 185 for “"Channel-flow"”.
-
Large eddy simulation of compressible channel flow
A large eddy simulation method for compressible channel flow simulations is developed and validated. The method separates the resolvable scale motions from the unresolvable (subgrid) scales by applying a spatial filter to the compressible Navier-Stokes equations. The Leonard and cross terms which …
-
Ultrafine aerosol deposition in planar channel flow
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
-
Energy conversion in laminar magnetohydrodynamic channel flow
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1961.
-
A finite element approach to open channel flow
… propagation of hydraulic jumps and bores in open channels. It uses the basis function to weight the temporal terms and an asymmetric weighting function to weight the convection terms. The scheme has been improved with routines that both apply the asymmetric weighting function only in the region of …
-
Master-mode set of turbulent 3D channel flow
Turbulent flow fields can be expanded into a series in a set of basic functions. Theterms of such series are often called modes. A master-mode-set is a subset of these modes, the time-history of which uniquely determines the time history of the entire turbulent flow provided that this flow is …
-
Optimal Large -Eddy Simulation of Turbulent Channel Flow
… a direct numerical simulation (DNS) of a plane channel at a friction Reynolds number of 587. Due to the limited number of realizations, estimates of the model term are global only in the streamwise and spanwise directions and local in the wall-normal direction. Measurements of the a priori error …
-
Shallow Water Wave Propagation in Open Channel Flow
Unsteady flow in open channels can be treated as propagation of shallow water waves in channel flow. It can be mathematically approximated by the Saint-Venant equations or by simplified wave approximations, including the kinematic wave, noninertia wave, gravity wave and quasi-steady dynamic wave …
-
Channel flow driven by a stationary thermal source.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1973.
-
Application of evolutionary computation to open channel flow modelling
… techniques to two different aspects of open channel flow. The first part of the work is concerned with evaluating the ability of an evolutionary algorithm to provide insight and guidance into the correct magnitude and trend of the three parameters required in order to successfully apply a …
-
Blade Channel Flow in a Simulated Radial-Flow Turbomachine
Made available in DSpace on 2014-12-10T17:25:41Z (GMT). No. of bitstreams: 1 6808096.pdf: 4022000 bytes, checksum: 6c46a2faedbe9e53d185981c3d455f0a (MD5) Previous issue date: 1967
-
Initiation of Particle Movement in Turbulent Open Channel Flow
… objective of this thesis is to investigate the flow conditions that lead to coarse grain entrainment at near incipient motion conditions. Herein, a new conceptual approach is proposed, which in addition to the magnitude of hydrodynamic force or flow power, takes into account the duration of the …
-
Experimental and numerical modeling of submarine channel flow and morphodynamics
<p>Submarine channels have been documented as ubiquitous features of continental slopes and fan systems.These channels with intricate meandering patterns and extensive levees are recognized as products of density-driven flows known as turbidity currents. The flow field and the morphodynamics of …
-
Modification of Turbulent Channel Flow by Passive and Additive Devices
… what would be experienced with a Newtonian fluid flowing turbulently at the same rate. A solution of 2000 ppm tallow-(tris-hydroxyethyl)-ammonium acetate (or Ethoquad T/13/50) and sodium salicylate is investigated in this study. The instantaneous streamwise and normal velocity fluctuations were …
-
Structure of turbulent channel flow perturbed by cylindrical roughness elements
… imposed in fully-developed turbulent channel flow by an isolated, wall-mounted circular cylinder. The cylinder height is chosen to specifically extend into the logarithmic layer of the flow in order to study its perturbation of the larger flow scales that embody a significant fraction …
-
Experimental Investigation of Acceleration and Velocity Fields in Turbulent Channel Flow
… effects dominate the smaller scales of the flow. Comparison between the bulk convective-derivative and time-derivative spectra illustrate this behavior. At low wavenumbers, the bulk convective-derivative and time-derivative spectra coincide with one another, implying that the larger scales …
-
Effects of boundary roughness on turbulence in uniform open channel flow
… process of sediment transport and mixing in open-channel flows. In this study, using highly controlled laboratory experiments, the effects of various bed configurations on turbulence, shear stresses, and other parameters have been analyzed and quantified and the results compared to previous …
-
Three-Dimensional Analysis of Boundary Layers in Magnetohydrodynamic Open Channel Flow
The pumping of liquid metals through open channels by MHD effects can be applied to slag separation or continuous casting processes by the metallurgy industry. This study involves the analysis of the boundary layer structure of non-uniform open channel flow in a rectangular channel, with perfectly …
-
Transport processes in a direct numerical simulation of turbulent channel flow
… time-dependent, three-dimensional turbulent flow in a channel is used to investigate turbulent transport processes. Detailed properties of the turbulent velocity field are presented. Three different transport processes are explored using this extensive data base. The first is the …
-
Point source dispersion in a direct numerical simulation of turbulent channel flow
… in a Direct Numerical Simulation of turbulent channel flow is studied. An algorithm for tracking fluid particles or molecular (or thermal) markers is developed and tested. Accurate estimates of a number of Lagrangian characteristics of the flow, necessary for the description of the diffusion …
Page 1 of 10