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Skip to Search Results- 1Ahmadi Jokani, Farzad
- 1Booysen, Adriaan
- 1Chen, Chin Wang
- 1Elyasi, Mohammad Mahdi
- 1Fathizadeh, Ali
- 1Gibeau, Bradley
- 2Aerodynamics
- 2Drag Reduction
- 2Friction factor
- 2Particle Image Velocimetry
- 2Particle Tracking Velocimetry
- 2Particle image velocimetry
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Fall 2021
The near wake behind the Ahmed body at zero-yaw has been extensively studied in the past, but comparatively little is known about the changes in the wake flow patterns during crossflow. Measurements of the near wake of a square-back Ahmed body were obtained at a Reynolds Number of ReH = 9.2104...
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Investigation Using Polymer Additives to Mitigate Erosion in Multiphase Turbulent Pipe Flow
DownloadSpring 2019
Long chained polymers were evaluated for their impact on reducing pipe erosion during two-phase flow. The research study was compartmentalized into three categories. One of the components of this study investigated the erosion of different materials in an attempt to find a faster eroding...
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Fall 2018
The work within this thesis is concerned with an unsteady flow phenomenon known as vortex shedding. It is ubiquitous throughout engineering applications and leads to unwanted noise, vibration, and pressure drop in the afflicted systems. Vortex shedding is highly complex, and even with over a...
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Experimental Investigation of Heat Transfer and Pressure Drop of Pipes with Internal Roughness
DownloadFall 2022
In many industrial heat exchangers, it is desirable to improve the rate of heat transfer from a pipe wall to the fluid flow. This improvement is commonly made by adding some form of roughness to the pipe surface. However, the added roughness often leads to an increase in the pressure drop of the...
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Spring 2023
The fluid mechanics literature suggests that the ability to manipulate the very-large-scale motions (VLSMs) that exist within turbulent boundary layers (TBLs) would provide influence over the unwanted drag forces, noise, and vibrations associated with these flows. The ability to suppress these...
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Fall 2023
To enhance the aerodynamic performance of a vehicle, a fundamental understanding of the flow is required. This can be achieved through flow characterization of simplified models such as the Ahmed body. However, uncertainties regarding the topology of flow motions in the wake persist due to the...
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Fall 2020
The transportation of mixtures of particles and liquids using slurry pipelines plays a crucial role in the petroleum and mining industries. Slurry pipeline flows are typically turbulent and the presence of the particulate phase results in pipe wear and increased pumping cost. As a result, slurry...
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Fall 2018
Vortex generators (VGs) are widely applied passive flow control devices that are proven to have significant effect in enhancing the performance of an aerodynamic system. With the recent development in non-intrusive measurement techniques, and computing ability, it has become possible to measure...
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Spring 2020
A reduction in skin-friction drag can lead to lower energy consumption in variety of transportation vehicles, and consequently results in a smaller environmental impact. Several methods have been presented to reduce the skin-fiction and one of these methods is to introduce an air layer at the...
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Transition From Laminar to Turbulent Flow in Non-Newtonian Channel Flows: The Impact of Drag Reducing Polymer Additives
DownloadFall 2023
This thesis investigates the effect of a drag-reducing polymer on laminar-turbulent transition in a gravity-driven channel flow. The drag-reducing polymer is polyacrylamide (PAM) dissolved in water at concentrations of 50, 75, 100, and 150 parts per million (ppm). An extensive experimental...