漸開線正齒輪泵之二維流場數值模擬與實驗驗證

Two Dimensional Numerical Simulation and Experimental Verification of Flow Characteristics of a Involute Spur Gear Pump

王俊捷(Jyun-Jie Wang)

指導教授 ： 張信良

共同指導教授 ： 張財壽

國立虎尾科技大學/工程學院/動力機械工程系機械與機電工程碩士班/碩士(2016年)

摘要

齒輪泵應用範圍相當廣泛且相關研究眾多，但對於數值模擬之相關研究，鮮少考慮到嚙合點閉合對於流率之影響。近幾年才開始有研究指出，出口壓力10 bar以上之流場需考慮嚙合點作用，該作用直接影響數值模擬之出口流率。本研究在此前提下，針對漸開線正齒輪泵之二維流場特徵進行研究與驗證。建立一二維齒輪泵流場模型，使用商業用CFD套裝模擬軟體 〖ANSYS-Fluent〗^® 模擬。以探討外接正齒輪泵為基礎，分析齒輪泵的齒頂間隙與齒空速度特性以及以轉速、出口壓力、中心距為變數，求出考慮嚙合點作用時之質量流率特性。
本研究亦搭配齒輪泵效率測試機台，透過改變轉數、出口壓力，測量實際輸出容積，並將模擬與實驗結果相互比較、驗證。本文藉由釐清流場特徵，並搭配實驗相互驗證，以期得到更準確之分析結果。

關鍵字

齒輪泵 ； 漸開線齒輪 ； 嚙合點 ； 有限元素分析 ； 效率分析

並列摘要

Gear pumps are popularly applied in industry. There are many researches about gear pump in the past years. However, there are few numerical simulations on the influence of meshing point for outlet mass flow rate. In recent years, it is pointed out that the meshing point must be considered in numerical simulation for cases whose outlet pressure is larger than 10 bars because the outlet flow rate of gear pump is significantly changed.
In this thesis, a two dimensional numerical and the associated experimental study are conducted to explore the effect of meshing on the characteristics of a involute spur gear pump. Besides, the relationships of the displacement efficiency, the rotation speed, and the pressure of outlet of a gear pumps are investigated. The range of the above mentioned parameters are numerically and experimentally investigated.

並列關鍵字

Gear Pumps ； Involute Gear ； FEA ； Efficiency analysis

參考文獻

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