教師資料查詢 | 類別: 期刊論文 | 教師: 湯敬民 Tang Jing-min (瀏覽個人網頁)

標題:Active Control of the Particle Deposition in a Low-speed Tunnel Flow via the Piezoelectric Plates Vibration
學年99
學期2
出版(發表)日期2011/04/01
作品名稱Active Control of the Particle Deposition in a Low-speed Tunnel Flow via the Piezoelectric Plates Vibration
作品名稱(其他語言)以主動控制法探討壓電晶片振動對低速管流內懸浮粒子壁面沉積之影響
著者Yung-Lan Yeh; Jing-Min Tang
單位
出版者
著錄名稱、卷期、頁數Journal of Aeronautics,Astronautics and Aviation, Series B 43(1), pp.11-17
摘要本研究主要以主動控制之方法以定量及定性之實驗法探討壓電晶片振動對低速管流中懸浮粒子於壁面沉積的影響,實驗之控制參數?出口風速、晶片輸入電壓、振動頻率及晶片裝置位置等。實驗中,基於出口高度(H=30mm)?特徵長度之雷諾數?111與133,研究過程藉量測植入與流失的粒子重量差作沉積之定量分析。結果顯示在較高出口風速及較低振動頻率時對沉積有較大的減少量,此點由沉積於壁面粒子波紋之定性分析中可相互得到應證。以一字型熱線測速儀?主要設備的量測中發現在晶片後方之流場有較大的流向速度擾動強度,頻譜分析則顯示激擾頻率的改變對晶片下游之流場較晶片間之流場有較顯著之影響,過近的晶片距離會交互作用使得沉積增加。
The main objective of this study was to investigate the particle deposition in a low-speed tunnel flow excited by piezoelectric plates experimentally. The controlling parameters were flow speed, excitation frequency, input voltage and the setting position of plates. The Reynolds numbers base on the exit height H=30mm were 111 and 133 corresponding to two flow speeds. The quantitative analysis was done by measuring the difference of weights between seeded and outflow particles. The results revealed that the decrement of deposition was due to higher flow speed and lower oscillating frequency. Similar results were also been obtained by comparing the peak-to-peak distance and the amplitude of the wavy shaped distributions of sediments on the wall. Stronger fluctuations were observed downstream of the plates measured using hot-wire anemometry. The spectra distribution also revealed that the variation of the excitation frequency affected the downstream flow field more than between each other. In addition, the deposition was increased by the strong interaction of the plates while they were closely placed.
關鍵字主動控制;壓電晶片;壁面沉積;Active control;Piezo-electric plate;Sedimentation
語言中文
ISSN1990-7729
期刊性質國內
收錄於EI;
產學合作
通訊作者Yung-Lan Yeh
審稿制度
國別中華民國
公開徵稿
出版型式,電子版,紙本
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