水流通過管道閘閥流場變化的可視化

Visualization of the Variation of Flow Field for Water Flowing through a Gate Valve

鍾文貴(Wen-Guey Chung) ； 柯亭帆(Tien-Fuan Kern) ； 王弘祐(Hung-Yu Wang) ； 詹悅民(Jueh-Ming Jan)

《農業工程學報》 55卷4期 (2009/12) Pp. 70-79

https://doi.org/10.29974/JTAE.200912.0006

摘要

閘閥(gate valve)在管道系統中是非常普遍的裝置，主要功用在於調節管內壓力或控制流量，管道也因設置閘閥而改變了管內流場（流線、流速與壓力等）的分佈。本文應用有限元素法軟體Comsol Multiphysics，進行數值模擬分析管道的流場變化，分別繪製水流通過管道閘閥產生的速度、壓力與流線等變化圖，這些圓形顯示閘閥開度與管內水流速度是改變管道流場分佈的兩個重要參數，也清楚地呈現出水流通過閘閥產生的復雜流動現象。本文將管道內流場的變動現象以視覺化圖形呈現，讓學生藉直觀圖形而理解管道的流場變化現象，達到提高學習成效之目的。

關鍵字

閘閥 ； 流場 ； Comsol

並列摘要

The gate valve is a common equipment in a pipeline system for regulating pressure and flow control. The flow field within a pipeline will be disturbed as the gate opening is changed. This paper simulated and analyzed the characteristics of the disturbed flow field by applying the software Comsol Multiphysics which is based on the algorithm of finite element method. Several visual figures, made by numerical analysis working on the software platform, concisely demonstrated the complicated phenomena of water flowing through a gate valve. The visualization of these figures were helpful for students understanding the abstract concept of pipe flow.

並列關鍵字

Gate valve ； Flow field ； Comsol