Error Analysis In The Estimation Of Radiation Sound Field By Source Methods

碩士 === 國立成功大學 === 造船工程學系 === 86 === Alternative acoustic source methods were introduced in the earlier studies.It proves that source methods give good estimations. However a question arises:"Suppose there are some errors in the nearf...

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Bibliographic Details
Main Authors: Yeh, Chiu Hsien, 葉秋顯
Other Authors: Too Gee-Pinn
Format: Others
Language:zh-TW
Published: 1998
Online Access:http://ndltd.ncl.edu.tw/handle/03438493761517001164
Description
Summary:碩士 === 國立成功大學 === 造船工程學系 === 86 === Alternative acoustic source methods were introduced in the earlier studies.It proves that source methods give good estimations. However a question arises:"Suppose there are some errors in the nearfield measurement on the boundary, what will be the errors in the estimation in the farfield by these source methods?" A numerical simulation is performed by setting possible errors in the nearfield measurement, then the errors in the farfield are evaluated. The results indicate that the source methods give fair estimations in the farfield, even with possible errors in the nearfield measurement. Besides, in order to capture analytical characteristics of source methods,we will discuss the influence parameters of similar source method(SSM) in thearticle.