Density current impact on a horizontal cylinder:Experimental flow field and force analysis
碩士 === 國立臺灣大學 === 土木工程學研究所 === 100 === The aim of this thesis is to analysis the flow field and the force as the density current passing a horizontal cylinder. Where submarine cables and pipelines across submarine canyons, there is a danger that they will be damaged or destroyed by turbidity current...
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ndltd-TW-100NTU050150992015-10-13T21:50:17Z http://ndltd.ncl.edu.tw/handle/11445762334251555249 Density current impact on a horizontal cylinder:Experimental flow field and force analysis 異重流衝擊水平圓柱之實驗流場及受力分析 Chi-Shian Yeh 葉祈賢 碩士 國立臺灣大學 土木工程學研究所 100 The aim of this thesis is to analysis the flow field and the force as the density current passing a horizontal cylinder. Where submarine cables and pipelines across submarine canyons, there is a danger that they will be damaged or destroyed by turbidity currents. To model this risk, the present thesis reports simplified experiments in which density currents impact a horizontal cylinder. The aim of the experiments is to simultaneously measure the force and flow field, and to relate one to the other. Laser-illuminated imaging is used to measure the unsteady velocity and density fields. On the other hand, a strain gauge is used to measure the associated force exerted on the cylinder. Inverse modeling is preformed to evaluate the pressure field and force from the velocity and density measurements, using the pressure Poisson equation. The modeled force was then compared to data retrieved from the strain gauge to evaluate the accuracy. Herve Capart 卡艾瑋 2012 學位論文 ; thesis 85 en_US |
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碩士 === 國立臺灣大學 === 土木工程學研究所 === 100 === The aim of this thesis is to analysis the flow field and the force as the density current passing a horizontal cylinder. Where submarine cables and pipelines across submarine canyons, there is a danger that they will be damaged or destroyed by turbidity currents. To model this risk, the present thesis reports simplified experiments in which density currents impact a horizontal cylinder. The aim of the experiments is to simultaneously measure the force and flow field, and to relate one to the other. Laser-illuminated imaging is used to measure the unsteady velocity and density fields. On the other hand, a strain gauge is used to measure the associated force exerted on the cylinder. Inverse modeling is preformed to evaluate the pressure field and force from the velocity and density measurements, using the pressure Poisson equation. The modeled force was then compared to data retrieved from the strain gauge to evaluate the accuracy.
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Herve Capart |
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Herve Capart Chi-Shian Yeh 葉祈賢 |
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Chi-Shian Yeh 葉祈賢 |
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Chi-Shian Yeh 葉祈賢 Density current impact on a horizontal cylinder:Experimental flow field and force analysis |
author_sort |
Chi-Shian Yeh |
title |
Density current impact on a horizontal cylinder:Experimental flow field and force analysis |
title_short |
Density current impact on a horizontal cylinder:Experimental flow field and force analysis |
title_full |
Density current impact on a horizontal cylinder:Experimental flow field and force analysis |
title_fullStr |
Density current impact on a horizontal cylinder:Experimental flow field and force analysis |
title_full_unstemmed |
Density current impact on a horizontal cylinder:Experimental flow field and force analysis |
title_sort |
density current impact on a horizontal cylinder:experimental flow field and force analysis |
publishDate |
2012 |
url |
http://ndltd.ncl.edu.tw/handle/11445762334251555249 |
work_keys_str_mv |
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