Browsing OSU - Electronic Theses and Dissertations by Author "Sallam, Khaled"
Now showing items 1-20 of 23
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Characterization of degraded drag-reducing polymer solution and its impact on the structure of turbulence
Saeed, Zeeshan (2019-12)Turbulence is often described in terms of either a random process or interacting coherent structures, which is really a choice of which parts of the turbulence to ignore. Focusing on coherent structures reducing the ... -
Clap and Fling Interaction of Bristled Wings: Effects of Varying Reynolds Number and Bristle Spacing on Force Generation and Flow Structures
Kasoju, Vishwa Teja (2017-05-01)The smallest flying insects with body lengths under 1 mm, such as thrips and fairyflies, typically show the presence of long bristles on their wings. Thrips have been observed to use wing-wing interaction via 'clap and ... -
Currents Generated by Upside-down Jellyfish: Implications for Suspension Feeding and Pore Water Pumping
Gaddam, Manikantam Goud (2016-12-01)The bottom or benthic boundary layer (BBL) of the oceans presents challenging conditions for foraging, on account of ambient flows as slow as few centimeters per second. Several marine invertebrates (such as sponges) have ... -
Design and evaluation of a small-scale portable hybrid rocket engine test stand
Price, Tanner (2023-05)This paper presents the design and evaluation of a small, portable hybrid rockettest stand that can accommodate up to a 3-in diameter engine casing. The primary goal of this study is to determine the most effective way to ... -
Development of Thermoelectric Devices for Structural Composites
Nattiyatharil Panachaveettil, Oonnittan Jacob (Oklahoma State University, 2011-12-01)The study presented in this thesis covers a multiple methods for manufacturing thermoelectric structural composites for waste heat energy harvesting efficiently. Various attempts to fabricate a thermoelectric device suitable ... -
Effect of additive-manufactured fuel grain geometry on small-scale hybrid rocket performance
Bycko, Zackery James (2023-05)This paper presents a parametric study of additive-manufactured fuel grain geometry on small-scale hybrid rocket performance. The motivation of this study is to understand and increase hybrid rocket performance to be a ... -
Effects of aligned graphene nanoplatelets (GNPs) on the multifunctional performance of carbon fiber reinforced polymer (CFRP) composites
Kotikalapudi, Sai Tharun (2023-05)This study investigates the multi-functional behavior of carbon fiber reinforced composites (CFRP) with respect to energy storage and electrical conduction applications. CFRP laminates were subjected to long-term exposure ... -
Evaluation of granular distribution and propellant grain length on tri-modal ammonium perchlorate solid rocket motors
Velasco, Daniel (2022-05)This paper presents an evaluation on the effects that variances in ammonium perchlorate particles size, total aluminum content ratio, and solid rocket motor geometry has on tri-modal ammonium perchlorate composite solid ... -
Experimental measurements and modeling of void fraction and pressure drop in upward and downward inclined non-boiling gas-liquid two phase flow
Bhagwat, Swanand Madhav (2015-07)The prime objective of this research is to contribute to the fundamental understanding of the effect of upward and downward pipe inclinations on flow patterns, void fraction and pressure drop in non-boiling gas-liquid two ... -
Flow characterization inside airways with unsteady breathing patterns
Gaddam, Manikantam G. (2021-07)Flow through human airways is characterized by unsteady flows, with flow separations at airway bifurcations. The oscillatory nature of airflow, unequal durations of inhalation time (IT), and exhalation time (ET) can ... -
Fluid dynamic mechanisms of power augmentation in vertical axis wind turbines
Alexander, Aaron (2018-07)Using computational fluid dynamics (CFD) simulations, this study examines passive flow control in drag-based and lift-based vertical axis wind turbines (VAWT). In drag based VAWTs (D-VAWT) such as the Savonius wind turbine, ... -
Learning strategy preferences, verbal-visual cognitive styles, and multimedia preferences for continuing engineering education instructional design
Baukal, Charles Edward, Jr. (2014-07)A literature search revealed very little information on how to teach working engineers, which became the motivation for this research. Effective training is important for many reasons such as preventing accidents, maximizing ... -
Measurement of Thermal Conductivity of Pipe Insulation Systems at below Ambient Temperature and in Wet Condensing Conditions with Moisture Ingress
Zhu, Weiwei (Oklahoma State University, 2015-05-01)When pipes are used for chilled water, glycol brines, refrigerants, and other chilled fluids, energy must be spent to compensate for heat gains through the wall of the pipes. Higher fluid temperature at the point of use ... -
Modification of a high Reynolds number turbulent boundary layer with the addition of drag-reducing polymer solution
Farsiani, Yasaman (2020-05)Polymer drag reduction (PDR) is an active flow control technique that has drawn significant scientific examination and industrial interest for over 70 years (e.g. fluid transport in oil pipelines, surface ships, safer ... -
Non-boiling Heat Transfer in Downward Inclined Gas-liquid Two Phase Flow
John, Tarebi Joseph (2015-07-01)Non-boiling heat transfer in downward inclined gas-liquid two phase flow is quite intriguing and is one of the least studied phenomenon in the two phase flow literature. To explore and understand this phenomenon, experiments ... -
Non-boiling Heat Transfer in Horizontal and near Horizontal Upward Inclined Gas-liquid Two Phase Flow
Kalapatapu, Srinaga Bharath Chandra (Oklahoma State University, 2014-07-01)Heat transfer in non-boiling gas-liquid two phase flow finds its practical application in chemical and petroleum industries. So far, majority of the research dedicated to study heat transfer in non-boiling two phase flow ... -
Primary breakup of liquid sheets in crossflow and liquid jets in gaseous coflow
Raza, Muhammad Saqib (2022-05)This thesis discusses the breakup of liquid sheets under the influence of crossflow and the breakup of micro-liquid jets in coflow air. The breakup of liquid jets and sheets is important for many applications, e.g., ... -
Simulation of combustion noise of premixed flames in OpenFOAM
Williamson, Andrew J. (2022-05)Advancements in combustion which have increased efficiency and reduced greenhouse gas emissions, such as premixed combustion and lean injection, have led to increased noise emission due to higher turbulence and mixing ... -
Simulation of Supersonic Injection of Underexpanded Aerated Liquid Jet
Choudhari, Abhijit S. (2016-12-01)The present computational study for underexpanded 2D and axisymmetric nozzle configuration is carried out for both gas-only and aerated liquid jet. The study is motivated by the application of fuel injection in air-breathing ... -
Study of Flow Patterns and Void Fraction in Horizontal Two-phase Flow
Mathure, Nishant (Oklahoma State University, 2010-12-01)A comprehensive study was carried out in regards to flow patterns and void fraction in horizontal two-phase flow. Five flow patterns were observed in the course of experimentation through the collection of 530 data points ...