Theory of sound propagation in superfluid-filled porous media

被引：5
|
作者：
Buishvili, T
Kekutia, S
Tkeshelashvili, O
Tkeshelashvili, L
机构：
[1] Univ Karlsruhe, Inst Theorie Kondensierten Mat, D-76128 Karlsruhe, Germany
[2] Inst Phys, GE-380077 Tbilisi, Georgia
[3] Tbilisi State Univ, Dept Phys, GE-380028 Tbilisi, Georgia
[4] Inst Cybernet, GE-380086 Tbilisi, Georgia
来源：
PHYSICS LETTERS A | 2002年 / 300卷 / 06期
关键词：
porous materials; hydrodynamical waves;
D O I：
10.1016/S0375-9601(02)00897-6
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The theory of sound propagation in macroscopically isotropic and homogeneous porous media saturated with superfluid He-4 has been developed neglecting all damping processes. The case when the normal fluid component is locked inside a porous medium by viscous forces is investigated in detail. It is shown that in this case one shear wave and two longitudinal, fast and slow, waves exist. Fast wave as well as slow wave is accompanied with temperature oscillations. The velocities of these waves are obtained. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：672 / 686
页数：15
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