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  本文選題：細胞 + 初始角速度�。� 參考：《天津大學》2012年碩士論文

【摘要】：本文基于流固耦合理論,采用C++程序調用Fluent軟件和Ansys軟件,模擬了有初始角速度230°/s的單個細胞在流動腔中的運動,分析了細胞受到初始角速度、流體作用力和重力的作用下在流動腔中的位移、轉角及細胞的變形。論文主要研究了 1、假設計算時間步、自適應時間步及收斂步數之間的關系。本文計算中假設迭代步數為100步,以保證每個時間步的計算迭代均收斂,本文的計算時間步假設為5e-4s自適應時間步。 2、由于X方向初始角速度230°/s的影響,計算初始時間段內對X方向轉角和Y方向位移引起一個振蕩,影響時間范圍不大,但是對X方向和Z方向的位移影響很小。 3、由于X方向初始角速度230°/s的影響,細胞在流動腔底部跳躍的現象沒有改變,但是對跳躍的周期有影響,細胞跳躍周期時間更長。 4、細胞在流動腔底部發(fā)生跳躍現象后,初始轉動角速度對Y方向位移有影響,對X方向和Z方向位移影響很小;初始轉動角速度對X方向、Y方向和Z方向的轉動角度影響很大。
[Abstract]:Based on the fluid-solid coupling theory, the motion of a single cell with an initial angular velocity of 230 擄/ s in the flow chamber is simulated by using C program to call Fluent and Ansys software, and the initial angular velocity of the cell is analyzed. Displacement, rotation angle and cell deformation in the fluid chamber under the action of fluid force and gravity. The paper mainly studies 1. Suppose the relationship among time step, adaptive time step and convergence step is calculated. In this paper, the number of iteration steps is assumed to be 100 steps to ensure the convergence of each iteration. The computational time step in this paper is assumed to be 5e-4s adaptive time step. 2. Because of the influence of the initial angular velocity of 230 擄/ s in the X direction, the oscillation of the rotation angle and the displacement in the Y direction in the initial time period is induced, but the influence range is not large, but the displacement in the X direction and Z direction is not affected very much. 3. Due to the influence of the initial angular velocity of 230 擄/ s in the X direction, the phenomenon of cell jumping at the bottom of the flow chamber is not changed, but it has an effect on the jump cycle, and the time of the cell jump cycle is longer. 4After the cell jumps at the bottom of the flow chamber, the initial rotational angular velocity has an effect on the Y direction displacement, but has little effect on the X direction and Z direction displacement, and the initial rotation angular velocity has a great effect on the X direction Y direction and Z direction rotation angle.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：O347;R312

【參考文獻】

相關碩士學位論文 前3條

1 翟雅斌;流動腔中細胞微小跳躍機理及變形研究[D];天津大學;2010年

2 王鑫;細胞支架三維多孔構型的非線性流固耦合數值計算[D];天津大學;2008年

3 吳云峰;雙向流固耦合兩種計算方法的比較[D];天津大學;2009年

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本文編號：1932890