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題名 | 聲波在介質中傳播之非線性效應參數的預估與量測=The Estimation of Nonlinear Parameter in Sound Propagating Media |
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作者姓名(中文) | 董世芳; 涂季平; | 書刊名 | 力學 |
卷期 | 12:4 1996.12[民85.12] |
頁次 | 頁427-435 |
分類號 | 334.5 |
關鍵詞 | 非線性參數; 實驗量測; 波傳導; Nonlinear parameter; Experimental measurement; Propagation; |
語文 | 中文(Chinese) |
中文摘要 | 本文以量測非線性參數B╱A之傳統方法-有限振幅聲波法為基礎,分別建立平 面波及球面波之數學模型,並且結合直接積分逆算分析來作數值模擬,最後以實際量測實驗 來證明其正確性。本文以純水為傳遞介質,來探討在不同馬赫數、不同頻率、不同週期數, 室溫下的水之非線性參數B╱A。我們發現以此新的預估方法所得之結果頗具準確性,而且 可適用之頻率及馬赫數範圍極廣,提供了一種新的量測非線性參數B╱A之方法。 |
英文摘要 | A new approach based on a direct integration inverse procedure is developed to estimate nonlinear parameter B/A. Mathematical models for plane wave and spherical wave are developed in the present study. Experimental measurements based on the direct integration inverse procedure are made to estimate the parameter B/A. The results show good agreements for measurement of nonlinear parameter of water. In addition, the results shows the suitable application ranges of frequency and Mach number. |
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