垂直微滴管應用於生物晶片吸附之週期性向上驅動流場分析

A Study of Upward Periodically Drive Pressure with the Application of Vertical Injection on Biochip Adsorbability

羅陵祺(Ling-Chi Lo)

指導教授 ： 許政行

中原大學/工學院/機械工程研究所/碩士(2004年)

https://doi.org/10.6840/cycu200400429

摘要

本文主要研究不可壓縮之非牛頓流體，模擬液滴流自鉛直的微滴管中，受週期性壓力的驅動，朝上擠注碰觸至平板的流場型態。利用不同的驅動條件、流體特性及管徑的改變，模擬自由邊界下-軸對稱之液滴型態。假設流場為理想狀態下，初始為靜止狀態，施加週期性的壓力梯度加入流場內，使液滴動態行為產生變化。本文選用FLOW-3D內建計算流力模式；包括半隱性有限差分法(Semi-Implicit Finite-Difference)、配合體積分率法(Fractional Volume of Fluid, VOF)與自由網格法(Fractional Area/Volume Obstacle Representation, FAVOR)來模擬計算。為節省運算時間與加速趨近數值解上，採行了鬆弛法(Successive Over-Relaxation, SOR)來求解動量方程式之數值近似解。

關鍵字

微滴管 ； 週期性壓力 ； 接觸角 ； 鬆弛法

並列摘要

The main objective of this study is to simulate the dynamics of the flow of incompressible non-Newtonian fluids inject upward from a vertical capillary tube (i.e. micropipette) into ambient gas to touch a lithographic plate, under various conditions of fluids’ characteristics and related contact angles. The fluid is initially at rest, and a time-dependent pressure gradient is suddenly imposed on the fluid to start the flow.
The momentum equations are solved numerically by the commercial code; Flow-3D, which includes the Semi-Implicit Finite-Difference Method, Fractional Volume of Fluid Method and Fractional Area/Volume Obstacle Representation Method. In order to speed up the convergence of numerical iterations, the Successive Over-Relaxation Method; is used in the present study.

並列關鍵字

time-dependent pressure gradient ； contact angle ； microtube

參考文獻

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