为有效密度流体模型添加热效应和粒度效应。

Adding thermal and granularity effects to the effective density fluid model.

机构信息

Applied Physics Laboratory, College of Ocean and Fishery Sciences, University of Washington, Seattle, Washington 98105, USA.

出版信息

J Acoust Soc Am. 2013 May;133(5):EL431-7. doi: 10.1121/1.4799761.

DOI:10.1121/1.4799761

PMID:23656105

Abstract

Previously, an effective density fluid model (EDFM) was developed by the author [J. Acoust. Soc. Am. 110, 2276-2281 (2001)] for unconsolidated granular sediments and applied to sand. The model is a simplification of the full Biot porous media model. Here two additional effects are added to the EDFM model: heat transfer between the liquid and solid at low frequencies and the granularity of the medium at high frequencies. The frequency range studied is 100 Hz-1 MHz. The analytical sound speed and attenuation expressions obtained have no free parameters. The resulting model is compared to ocean data.

摘要

此前，作者[J. Acoust. Soc. Am. 110, 2276-2281 (2001)]开发了一种有效的密度流体模型（EDFM），用于松散的粒状沉积物，并应用于沙子。该模型是对完整的 Biot 多孔介质模型的简化。在这里，向 EDFM 模型中添加了另外两个效应：低频下液体和固体之间的热传递以及高频下介质的颗粒度。研究的频率范围为 100 Hz-1 MHz。获得的分析声速和衰减表达式没有自由参数。所得到的模型与海洋数据进行了比较。