- 學位論文
液體在微熱管內三角形溝槽之流動之分析
A Study on Liquid Flows in a Triangular Groove of a Micro Heat Pipe
摘要
本文主要是利用摩擦因子雷諾數（friction factor Reynolds number）來修正Cotter最大熱傳量的模型，並且從微熱管單一V型溝槽的幾何形狀中獲得無因次液體流動形狀因子 與溝槽開合角、固-液接觸角、摩擦因子雷諾數的數學關係式，並且藉由各個參數的變化來找出無因次液體流動形狀因子的最佳化設計。 當溝槽開合半角 時，固-液接觸角 與摩擦因子雷諾數 對於 的影響不大，在較低的摩擦因子雷諾數下所得到的無因次液體流動形狀因子 值相對為大，當接觸角 及溝槽開合半角 時可得到無因次液體流動形狀因子 的最佳化設計。
並列摘要
The present study modifies Cotter’s model to predict the maximum heat transport capacity and to obtain the equation by the geometric shape of a single V-shaped microgroove of the micro heat pipe. The product of friction factor and Reynolds number correlated between the channel-half angle and contact angle is used to analyze the dimensionless liquid flow shape factor, and to find its optimal design. The effects of both the contact angle, , and the product of friction factor and Reynolds number, , on the dimensionless liquid flow shape factor , are minial when the channel-half angle is less than 5 degree, i.e., . A higher dimensionless liquid flow shape factor, , is obtained at the low product of friction factor and Reynolds number. The results indicate that the optimal design of the dimensionless liquid flow shape factor is reached when contact angle, , and channel-half angle, .