Mitigating Flow Induced Vibrations: Using Tunable Porous Metamaterials to Diffuse Turbulence in High-Tech Industrial Applications

Piest, bastiaan (2024) Mitigating Flow Induced Vibrations: Using Tunable Porous Metamaterials to Diffuse Turbulence in High-Tech Industrial Applications. Master's Thesis / Essay, Mechanical Engineering.

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Abstract

Flow induced vibrations (FIV) pose significant challenges in high-tech industries such as semiconductor manufacturing, necessitating innovative solutions to minimize their impact. This research project focuses on leveraging metamaterials concepts to reduce FIV in high-tech industrial cooling systems. More specifically, a class of metamaterials known as triply periodic minimal surfaces (TPMS). The use of TPMS in engineering applications has become increasingly feasible because of the advent of additive manufacturing. A model was proposed to approximate the behaviour of a three-dimensional array of TPMS based on the Darcy-Forcheimer equation. Based on this model, full scale simulations of a sudden expansion were carried out to investigate the influence of TPMS inserts on FIV. The simulations revealed that TPMS structures exhibit promising characteristics for FIV mitigation, demonstrating a reduction of approximately 81 % in turbulent kinetic energy and a 12.5 % reduction in vorticity. To validate the computational findings, two sets of experiments were conducted. The first set aimed to validate the Darcy-Forcheimer model by assessing pressure drop in a straight tube with a TPMS insert. Unexpectedly, contradictory data emerged, necessitating further investigation to conclusively validate the model. The second set of experiments focused on evaluating the TPMS inserts' effectiveness in reducing FIV. Results from hydrodynamic and acoustic pressure fluctuations indicated that ...

Item Type:	Thesis (Master's Thesis / Essay)
Supervisor name:	Krushynska, A.O. and Druetta, P.D.
Degree programme:	Mechanical Engineering
Thesis type:	Master's Thesis / Essay
Language:	English
Date Deposited:	19 Feb 2024 10:33
Last Modified:	19 Feb 2024 10:33
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/31959

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