Searched for: contributor%3A%22Elsinga%2C+Gerrit+%28mentor%29%22
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Varadharajan, Prasath Krishnaswamy (author)
A tip-vortex in the wake of a finite length lift generating surface has a low pressure region near the axis of the tip-vortex. This low pressure region can trigger tip-vortex cavitation especially in ship propellers which has adverse effects by causing vibration and underwater noise production. One way of minimising the tip-vortex cavitation is...
master thesis 2019
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Gawandalkar, Udhav (author)
The way in which mean strain affects the turbulent structures is imperative to understand various natural flows such as flow over a hill, the flow of a river in the delta, jet streams in the upper atmosphere etc. Further, it also has industrial implications viz; flow over bodies such as airfoil, turbomachinery, gas pipelines. <br/>The strained...
master thesis 2019
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Sai Krishna Ramani, Sai Krishna (author)
Aerodynamics has become increasingly important these days in the design of automobiles due to the increased constraints placed on the emissions. In the past the focus has been primarily on the shaping of the upper body. However, due to practical requirements, further scope of improvements to the upper body has been greatly reduced. The focus has...
master thesis 2018
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Viswanathan, Veeraraghavan (author)
The aerodynamic drag force is a crucial factor for passenger cars and trucks, where fuel economy is of utmost importance. While a lot of research has been performed to optimize the design of the upper-body of the vehicle, the flow over a rotating wheel that is enclosed by a wheelhouse is not understood to the same level. Estimates show that the...
master thesis 2017
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Dash, Amitosh (author)
People living or working close to the highways are at risk to higher exposure levels of different air pollutants, one of which is particulate matter. The Antea group has recently proposed the addition of Electrostatic Precipitators (or ESPs) on the top of sound barriers adjacent to highways, in order to capture the particulate matter and safely...
master thesis 2017
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Louman, Renee (author)
Shock Wave Boundary Layer Interactions (SWBLIs) occur frequently in supersonic and hypersonic flows and, depending on the strength of the shock wave and the state of the boundary layer, may lead to boundary layer separation. This can result in a multitude of problems, such as an increase in drag, a drop in air intake efficiency and high fatigue...
master thesis 2015
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Srivastava, A. (author)
Micro-ramps are currently being investigated as a means of reducing negative effects of shock wave-turbulent boundary layer interactions. A micro-ramp enhances the mixing of the ow by introducing vortices in the ow, thus energizing the boundary layer to overcome the adverse pressure gradient due to an impinging shock. The effect of changing...
master thesis 2014
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Hennevelt, Marcel (author)
The coherent structures within the turbulent boundary layers have been investigated extensively over the past five decades. In particular, the long alternating low- and high speed streaks in the near-wall region. Along these streaks ejection and sweep events occur which play a major role in the production of Reynolds shear stress. Hence, studies...
master thesis 2012
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