University of Twente Student Theses


Bluff body flow : wake behavior behind a heated circular cylindeer

Mastenbroek, Jan-Jaap (2010) Bluff body flow : wake behavior behind a heated circular cylindeer.

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Abstract:The main objective of this thesis is to get a better understanding of the wake behavior of a circular cylinder when the cylinder is heated. To do so the influence of viscosity on the wake generation is investigated. Results are gained from calculations performed with a DNS CFD program. Also the possibility to manipulate the wake is investigated. The setup is for a case at relatively low speeds, the Reynolds number is set to 200 and the Mach number to 0.2. As a benchmark, flows with Reynolds numbers varying from 50 - 500 over a non-heated cylinder have been calculated, and the differences are investigated. These differences are then compared to the changes of the wake when the cylinder is heated in the flow at Re=200 and Ma=0.2. Calculations have been performed for two different fluids, water and air respectively. With the gained insight a practical setup at the UCLA can be used for a larger variety of flow conditions
Item Type:Essay (Master)
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
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