- 期刊
Numerical Simulation and Experimental Testing on Counter-Rotating Fan Optimized by the Rotational Speed Control Method
轉速優化方法下對旋風機的數值模擬與實驗測試
摘要
在實際應用中發現，當送風距離加長時，對旋風機後級電動機很容易被燒毀。為了弄清故障的原因並找到解決問題的方法，本文針對對旋風機三維流場模型進行了數值模擬，並借助七孔探針速度檢測系統對轉速優化方法下的對旋風機樣機進行了實驗測試。在進行風機內部流場分析時，以湍流強度作為參考指標，仿真結果顯示，當通風管路長度變化時，選擇適當的轉速匹配方式可以使整個風機系統性能得到優化，同時系統的運行效率也得到了的改善。另外，在進行實驗研究時發現，對對旋風機兩級葉輪的入口及出口速度進行實時監測，可以在一定程度上反應風機內部流動的好壞，這為對旋風機內部流場觀測提供了一個簡單有效的途徑。
關鍵字
無資料並列摘要
In practical applications, it has been found that the rear motor of a counter-rotating fan often breaks down when it has a long-distance air supply. To determine the cause of this malfunction and find a solution, a numerical simulation specific to the three-dimensional flow field model and an experimental test with the aid of a seven-hole probe velocity measurement system were carried out simultaneously on a counter-rotating fan optimized b0 the rotational speed control (RSC) method. Analysis of the internal flow field based on turbulence intensity indicates that the selection of the appropriate speed matching type for varying pipelines will contribute to overall performance optimization and operating efficiency improvement. Moreover, real-time monitoring of inlet and outlet flow velocities of two counter-rotating impellers offers a simple and effective method for observing the internal flow field.
延伸閱讀
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