DYNAMIC TORTUOSITY AND BULK MODULUS IN AIR-SATURATED POROUS-MEDIA

被引：739

作者：

CHAMPOUX, Y

ALLARD, JF

机构：

[1] Institute for Microstructural Sciences, National Research Council, Ottawa

来源：

JOURNAL OF APPLIED PHYSICS | 1991年 / 70卷 / 04期

关键词：

D O I：

10.1063/1.349482

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, the concept of characteristic length introduced in the definition of the dynamic tortuosity by Johnson, Koplik, and Dashen [J. Fluid Mech. 176, 379 (1987)] is extended to express the frequency dependence of the bulk modulus of the saturating fluid at high frequencies. A general phenomenological frequency dependence for this dynamic bulk modulus is obtained using the expression for the dynamic tortuosity. The theoretical predictions for dynamic tortuosity and bulk modulus are compared with experimental results obtained from acoustic measurements on a rigid-frame porous material saturated with air.

引用

页码：1975 / 1979

页数：5

共 18 条

[1] THEORY OF PROPAGATION OF ELASTIC WAVES IN A FLUID-SATURATED POROUS SOLID .1. LOW-FREQUENCY RANGE [J].