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International Scholarly Research Notices
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2012
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Article
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Fig 5
/
Research Article
Experimental Characterisation of the Far-Field Noise in Axial Fans Fitted with Shaped Tip End-Plates
Figure 5
Comparison of A-filtered overall sound power level (
𝑂
𝐿
𝑤
(
𝐴
)
) − specific noise level (
𝐾
𝑠
) polar plot.