本文研究的主題在於分析熱泳和電泳效應對氣膠微粒沈積於有限平板表面與有限波形板表面之影響，所討論的板面流場為對稱停滯流，其流動型態為二維、不可壓縮及穩態之層流，此外，微粒沈積的傳輸機制則耦合對流、重力沈降、布朗擴散、熱泳及電泳效應。統制方程式之推導由完整的Navier-Stokes方程式著手，並配合座標轉換理論。經轉換後之統制方程式可將不規則邊界展開成一規則的計算平面，進而利用三次樣線交換方向定置法(SADI;Spline Alternating-Direction Implicit Method)求得數值解。
研究結果顯示，當微粒粒徑小於1微米時，微粒沈積速度是受到布朗擴散、熱泳及電泳效應的影響。若隨著粒徑愈小、溫度差愈大、電場愈強，則沈積速度愈大；當微粒粒徑大於1微米時，電泳效應逐漸減弱，因此微粒沈積速度是受到重力沈降和熱泳效應的影響。而隨著粒徑愈大、溫度差愈大，沈積速度就愈大。關於沈積表面的幾何形狀則會影響微粒沈積效應，使之呈現與表面類似的頻率，且當布朗擴散與熱泳為主要機制時，表面凸起與凹陷之位移的影響會隨波振幅及x軸增加而愈趨明顯。至於波形板的平均沈積率大約略高於平板的平均沈積率。

The subject of the study is to analyze the effects of thermophoresis and electrophoresis on aerosol particle deposition onto a finite flat-plate surface and a finite wavy-plate surface. The flow fields of plate surfaces discussed are both symmetric-stagnation flow. The flow is modeled as a two-dimensional, incompressible and steady-state laminar forced convective flow. Moreover, the transport mechanisms of particle deposition by convection, sedimentation, Brownian diffusion, thermophoresis and electrophoresis are coupled. The governing equations are derived from complete Navier-Stokes equation with the theory of coordinate transformation. The transformed governing equations can expand the irregular boundary into a calculable regular plane, and then solve it by using the spline alternating-direction implicit method(SADI).
Numerical results show that, when particle diameters are smaller than 1(micron), the particle deposition velocity is controlled by Brownian diffusion, thermophoresis and electrophoresis. If Particle diameters will decrease, temperature gradient will increase and the electric field will strengthen, the deposition velocity will increase. When particle diameters are bigger than 1(micron), the electrophoresis decreases gradually. The particle deposition velocity is controlled by sedimentation and thermophoresis. If Particle diameters and temperature gradient will increase, the deposition velocity will increase. About the geometric form of the deposition surface would influence the particle deposition and make it have a similar frequency with the surface. When Brownian diffusion and thermophoresis are the dominant transport mechanisms, the influence of the displacement from the lumpy surface will become greater with the increase of the wavy amplitude and x axis. Additionally, the mean deposition rate of the wavy plate would be higher than the flat plate.

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