Excellent Solarenergy Absorbing and Retaining Fabric Material
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چکیده
منابع مشابه
Helmholtz resonator lined with absorbing material.
A closed-form, two-dimensional analytical solution is developed to investigate the acoustic performance of a concentric circular Helmholtz resonator lined with fibrous material. The effect of density and the thickness of the fibrous material in the cavity is examined on the resonance frequency and the transmission loss. With the expressions for the eigenvalue and eigenfunction in the cavity, th...
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ژورنال
عنوان ژورنال: Sen'i Gakkaishi
سال: 1989
ISSN: 0037-9875,1884-2259
DOI: 10.2115/fiber.45.p134