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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/111425


    Title: Numerical simulation of rising gas bubble behaviors using an incompressible multi-fluid flow model
    Other Titles: 上升氣泡行為之不可壓縮多相流模式的數值模擬
    Authors: 翁嘉宏;Weng, Chia-Hung
    Contributors: 淡江大學航空太空工程學系碩士班
    牛仰堯;Niu, Yang-Yao
    Keywords: 氣泡上升;多相流模式;預處理;體積佔有率;界面壓縮;bubble rising;multi-fluid model;Preconditioning;VOF;sharp interface technique
    Date: 2016
    Issue Date: 2017-08-24 23:52:31 (UTC+8)
    Abstract: 我們採用了預處理不可壓縮多相體模式加上界面壓縮模型來模擬氣泡上升的問題,本文中的人工壓縮法是採用Chorin所發表方法再進一步推展到不可壓縮多相Navier-Stokes雙曲線方程式。為了界面更加明確,我們在模擬氣泡上升的界面處理結合了THINC介面壓縮函數,使其結果使界面更加明確清晰。我們成功使用上述方法來研究氣泡上升在不同邦德(Bond)數和阿基米德(Archimedes)數對終端速度及氣泡外型的影響。
    This paper first applies pre-conditioning incompressible multi-fluid flow model based on sharp interface technique to simulate the bubble rising flow problems. Here, the preconditioning matrix modified from Chorin’s artificial compressibility concept is used to make the incompressible multi-fluid Navier-Stokes equations to be hyperbolic. Therefore, a simple convection-pressure flux-splitting method with the THINC formulation for volume fraction function compressed reconstruction is used to maintain the preservation of sharp interface evolutions of bubble rising flow simulation. The revolution of a rising bubble at different Bond number and Archimedes number is shown and discussed.
    Appears in Collections:[Graduate Institute & Department of Aerospace Engineering] Thesis

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