Reentrant hexagons in non-Boussinesq Rayleigh-Benard convection: Effect of compressibility

被引：18

作者：

Roy, A ^{[1
]}

Steinberg, V ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Phys Complex Syst, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.88.244503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present experimental studies of a new pattern sequence observed in non-Boussinesq convection in a compressible fluid near its gas-liquid critical point (CP). Besides the known hysteretic transitions among conduction state, hexagons, and rolls, another hysteretic transition from rolls to hexagons at higher values of the control parameter is found. This reentrance phenomenon is observed in a rather narrow range of about 60- to 100-mum cell heights and is attributed to large compressibility of a fluid near the CP.

引用

页数：4

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