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 245 for “"Velocity profile"”.
-
Velocity profile in confined elliptic fractures
… fracture. In order to do so, the non-uniform velocity profile in an elliptic fracture with laminar flow of both Newtonian and non-Newtonian fluids was calculated. A transient flow computer program is presented using the method of characteristics, to show the frictional effects on acoustic …
-
Development of Velocity Profile Generating Screens for Gas Turbine Components
… conditions include inlet flow conditions such as velocity profile, Reynold's number, and temperature. The methodology to be introduced designs a velocity profile generating screen to match real world conditions through the use of perforated plates. The velocity profile generating screen is an …
-
Analytical and Numerical Models for Velocity Profile in Vegetated Open-Channel Flows
… study will evaluate flow resistance and scale velocity profile in depth limited flow conditions, specifically investigating the impact of vegetation on the flow resistance under submerged flow conditions. The resistance induced by vegetation in open channel flows has been interpreted …
-
Analytical and Numerical Models for Velocity Profile in Vegetated Open-Channel Flows
… study will evaluate flow resistance and scale velocity profile in depth limited flow conditions, specifically investigating the impact of vegetation on the flow resistance under submerged flow conditions. The resistance induced by vegetation in open channel flows has been interpreted …
-
Analytical and Numerical Models for Velocity Profile in Vegetated Open-Channel Flows
… study will evaluate flow resistance and scale velocity profile in depth limited flow conditions, specifically investigating the impact of vegetation on the flow resistance under submerged flow conditions. The resistance induced by vegetation in open channel flows has been interpreted …
-
Development and application of an eccentric force-velocity profile in rugby union athletes
… percentage of concentric 1RM (34%), RPE (20%) or velocity (16%). A majority of respondents did not monitor ECC load (58%) or use eccentric-specific testing (75%). The methodology between practitioners is generally non-uniform and tends to follow existing guidelines for traditional or …
-
A study of the effects of velocity profile development and polyethylene oxide addition on liquid jet stability
Massachusetts Institute of Technology. Dept. of Chemical Engineering. Thesis. 1967. B.S.
-
A study of velocity profile models and wall shear stress for two and three-dimensional turbulent boundary layer flows
A review of the existing, more prominent velocity profile models 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 …
-
Assessing the influence of lifter profiles on the velocity profile and the charge toe and shoulder using data from the PEPT system
… Anattempt was made to develop a model for the velocity profile incorporating lifter height.Therefore the objectives of the study are to: •Determine the effect of lifter height on the velocity profile using the particle tracking data. •Determine the effect the lifter height on the charge …
-
The study of the influence of the lifter height on the charge motion, velocity profile and power draw of a laboratory tumbling mill using DEM simulations
… mill systems. The data has been used to derive a velocity profile for particle motion between the mill shell and centre of circulation (COC), a region that highlights the distinct particle motion in tumbling mills. In prior work, a laboratory scale mill and PEPT was used to develop a velocity …
-
Energy transfer from wind to waves
… from the Phillips model, for which the mean velocity profile over water surface is important. The analytical model of Phillips using logarithmic form of the mean velocity profile has not been successful. In the present study, two different mean velocity profile models have been used. One of …
-
Estimation of the bed shear stress in vegetated and bare channels
… channels due to the impact of vegetation on the velocity profile and turbulence production. This study proposes a new model to estimate the bed shear stress in both vegetated and bare channels with smooth beds. The model, which is supported by measurements, indicates that for both bare and …
-
THE VERTICAL STRUCTURE OF ESTUARINE TIDAL CURRENTS
… slope induced pressure gradient, mean current velocity profile, and bottom stress are investigated both theoretically and experimentally for a tidal channel in a well-mixed estuary. The theory focuses on the use of eddy viscosity models. Surface slope estimates based on tide predictions, …
-
Self-Similar Models of Quasar Outflow Shock Structures
… bulk acceleration (positive or negative) of low-velocity Ca II in the quasar SDSS J030000.0+004828.0 (J0300) and compare our results to model predictions. We find a strong upper limit on the acceleration magnitude, yielding plausible model constraints, but the observed range of gas velocities …
-
The measurement of flow velocity distribution
… averaging times. Consequently, correlation and velocity profile measurements are made from an experimental flow rig. A waveform analysis program is used to analyse these measurements. The Fourier transform deconvolution is shown in this case to have poor noise immunity. For this reason, an …
-
Resistance to Flow Through Riprian Wetlands
… emphasis in this research has been placed on velocity profile measurement of flow within vegetation. Measurements were taken within various density configuration of rigid simulated vegetation for emergent and submerged cases. In addition, many of the experiments tested the effect on the …
-
Large-eddy simulation of turbulent wall-pressure fluctuations using the finite element method
… method, is used. In this method, the turbulent velocity profile from a specific plane within the computational domain is recycled and rescaled propriately, and re-introduced at the inlet of the domain at every time step iteration. In the proposed method, the mean velocity profile is fixed at the …
-
Statistical Stability and Fast Transient Growth in Wall-Bounded Turbulence
… interactions rely on the knowledge of the mean velocity profile and include linear models such as modal stability analysis and transient growth calculation. With a purpose to better the understanding of the relationship between the mean flow and the background turbulence structures, this thesis …
-
Benchmarking of Computational Models Against Experimental Data for Adiabatic Film-Cooling Effectiveness for Large Spacing Compound Angle Full Coverage Film Cooling Arrays
… rows for the 14.5 diameter spacing. Utilizing a velocity profile at the crossflow inlet produced significant differences in the results produced when compared to a uniform freestream velocity profile. The goal of this research is to use commercially available turbulence models, in an effort to …
-
Optimization of transverse flux motor for utilization in bionic joints
… which minimizes the power loss over the torque-velocity profile of a bionic ankle is more precisely what is needed for our application. Considering the design requirement in this way lays the groundwork for a new design framework. Leveraging this problem statement, we herein develop a new motor …
Page 1 of 13