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 178 for “"cross flow"”.
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Gaseous Heat Transfer in Cross Flow
… into gas phase heat transfer in a single-pass cross flow heat exchanger supplied by NU-WAY ECLIPSE Ltd., to find reasons whyover design occured when standard correlations were used....
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AGRICULTURAL SPRAYS IN NON-UNIFORM CROSS-FLOW
… a Phase-Doppler Particle Analyzer. A sheared cross flow pattern, having lower velocities near the wind tunnel floor and increasing velocities with increasing distance towards the wind tunnel roof was used. The nozzle was located in the region of high shear. The study was conducted in four …
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Cross-flow membrane filtration of cell suspensions
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1989.
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The cross-flow chromatographic separation of carbohydrate mixtures
Reviews are given of the theoretical aspects of chromatography and of continuous chromatographic techniques. A pilot-scale rotating annular chromatograph has been constructed consisting of two concentric cylinders which form an annulus 1.4m in length and 12mm wide. The annular space is filled with …
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Cross-flow ceramic microfiltration of ethanol fermentation broths
… of this research was to optimize the ceramic cross-flow microfiltration of ethanol fermentation broths. The ceramic membranes from three different manufacturers were made of $\alpha$-alumina with pore sizes of 0.05 $\mu$m-1.4 $\mu$m. Water permeabilities for the 0.2 $\mu$m Ceraver, Ceraflo and …
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Experimental investigation of liquid fragmentation in hypersonic cross flow
… of liquid injected into Mach 6 hypersonic cross flow. Flow topology, shock and vortex systems, fragmentation and atomization mechanisms are investigated using high-speed photography, Schlieren photography, flow visualization and Phase Doppler Interferometry techniques. All experiments are …
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Cross flow control with weighted fairness and TCP friendliness
… discussion of fairness and friendliness among flows in the bottleneck link. Meanwhile, large companies or clusters have considerable needs for shaping their own flows while maintaining friendliness to other flows in the network. This thesis proposes a novel cross flow congestion control scheme …
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The turbulent structure of the jet in cross-flow
In this thesis the structure of the jet in cross flow in the far field was investigated experimentally using time-resolved, multi-scale and statistically independent Stereoscopic Particle Image Velocimetry measurements to reveal the mean and instantaneous three-dimensional (3D) structures. All of …
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Cross-flow membrane plasmapheresis : an analysis of flux and hemolysis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1985.
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Experimental determination of blade forces in a cross-flow turbine
A cross-flow turbine was tested to determine the magnitude of the fluid forces on the blades. The tangential and radial forces and the torque were measured on a test blade. Because the runner was made of plexiglas, the flow and the effects of the incidence angle at various speeds were observed. The …
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Evaporating cross flow spray jets in gas-solid circulating fluidized bed
Three-phase flow of solid-gas suspension with liquid spray is found in many industrial applications, including fluidized catalytic cracking in petroleum refinery process, and wet scrubbing process. This dissertation study is aimed to understand the gas-solid-liquid three-phase flow structure, phase …
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Experimental and analytical investigation of multiple jets in a cross-flow
… of the one-dimensional frequency spectra and flow visualization using a tuft wire were also performed. An analytical study using a momentum-integral approach was also carried out in order to predict the gross jet properties such as the jet trajectories, the jet growth, and the mean jet …
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Viability of Cross-Flow Fan for Vertical Take-Off and Landing Aircraft
… design that, when paired with an off-the-shelf cross-flow fan rotor, will generate a trust-to-weight ratio significant enough to allow for vertical take-off. The commercial computational fluid dynamics software, ANSYS CFX, was used to perform a computational analysis of various housing designs …
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Flow characteristics and acoustic resonance excitation of finned cylinders in cross-flow
The flow characteristics and acoustic resonance excitation of bare and finned cylinders of different arrangements in cross-flow were experimentally investigated. In the design phase of finned tube heat exchangers, finned cylinders are treated as bare cylinders with a diameter equivalent to their …
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Experimental Investigations into the Fluid Dynamics and Forcing Underlying Cross-flow Turbine Operation
Within the wind and marine energy sectors, axial-flow (i.e., horizontal axis) turbines are a well-established and well-understood approach to converting the kinetic energy in a moving fluid to electricity. Recent cross-flow (i.e., vertical axis) turbine research has yielded substantial performance …
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Flow-sound interaction mechanism of a single spirally finned cylinder in cross-flow
… shedding frequency and one of the acoustic cross-modes of the duct housing the finned tubes. This may reduce the service life of the heat exchangers, and adversely affect the health of individuals working in the proximity of such noise. Since the flow-acoustic phenomenon of finned tubes are …
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Parametric investigation of flow-sound interaction mechanism of circular cylinders in cross-flow
Flow-excited acoustic resonance in heat exchangers has been an ongoing issue for the past century. The main challenge in this issue, is in the actual prediction of the resonance occurrence. This is due to the complexity of the flow-sound interaction mechanism that takes place between the packed …
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The entrainment and mixing of a round buoyant turbulent jet in cross-flow
… physics of the round buoyant turbulent jet in crossflow. In particular, the study centers on the physics associated with entrainment and mixing phenomena of the jet with the goal of better understanding the trends of trajectory and dilution behavior.
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