本計劃是探討雷射或電子束製造加工，與加工件固化後表面形成之形態，譬如表面湧起、凹陷、或漣漪形成；此等反應會直接影響表面熱處理與銲接成品的品質。此研究考慮質量、動量和能量方程式，引進介面與邊界條件，模擬真實過程。為了促進品質穩定性，和增加大量生產能力並且減少成本，必須瞭解反應產生之機構。
本論文利用相場法(Phase-field method)，以二相流(Two-phase flow)模擬金屬表面受一集中熱源加熱熔融後之暫態熱流行為。

This project is to explore the manufacturing and processing of laser or electron beam, formed on the surface morphology after curing and processing parts, such as surfacefilled, depression, or the formation of ripples; These reactions will directly affect the surface heat treatment and welding quality of thefinished product This study to consider the mass, momentum and energy equations, the introduction of theinterface and boundary conditions to simulate the real process In order to promote quality stability, and a large amount of production capacity and reduce costs, we must understand the institutions of the reaction In this thesis, the phase field method (Phase-field method) (Two-phase flow) two-phase flow simulation of metal surface by a concentrated source of heat melt the transient heat flow behavior

頁次
謝誌 I

目錄 II

圖表目錄 IV
符號說明 V
中文摘要 VII
英文摘要 VIII

第一章　緒論 1
　　　1.1 研究背景 1
　　　1.2 二相流與相場法(Phase-field method) 1

第二章　理論分析與模型設定 3
2.1 模型統御方程式 3
(A). Mass conservation Equation & Level-set equation 3
(B). Momentum Equation 4
(C). Energy Equation 7
　　　2.2 模型域設定 8
(A).模型幾何、邊界與網格設定 8
(B)各流體性質設定 10
第三章 模擬結果與討論 12
第四章 總結 18
參考文獻 19














圖表目錄
圖2.1(a)流場各邊界及網格設定..............................12
圖2.2(a)流入邊界1的∅分布圖............................... 12
圖2.2(b)流入邊界1的delta分布圖...........................12
圖表2.3各流體的性質設定.................................. 13
圖3.1(a)流場內u速度分布圖................................14
圖3.1(b)~(g)流場中液層變化圖..............................15
圖3.1(h)流場內溫度變化圖..................................18
圖3.1(i)流場內密度變化分布圖..............................19

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