AMPLIFICATION OF THERMAL NOISE VIA CONVECTIVE INSTABILITY IN BINARY-FLUID MIXTURES

被引：25
|
作者：
SCHOPF, W
REHBERG, I
机构：
来源：
EUROPHYSICS LETTERS | 1992年 / 17卷 / 04期
关键词：
HYDRODYNAMIC STABILITY AND INSTABILITY; TURBULENT FLOWS; CONVECTION; AND HEAT TRANSFER; FLUCTUATION PHENOMENA; RANDOM PROCESSES; AND BROWNIAN MOTION;
D O I：
10.1209/0295-5075/17/4/007
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In the convectively unstable regime of a binary-fluid mixture in a quasi-one-dimensional ramped convection channel an erratic spatio-temporal behaviour of very small amplitudes is observed. These patterns are interpreted as the amplification of intrinsic noise. Their measured temporal correlation functions are compared with the theoretical ones obtained from a Ginzburg-Landau equation containing a noise term. The measured intensity confirms the assumption that the fluctuations are due to thermal noise.
引用
收藏
页码：321 / 326
页数：6
相关论文
共 50 条
  • [31] Pattern study of thermal phase separation for binary fluid mixtures
    Tiribocchi, Adriano
    Piscitelli, Antonio
    Gonnella, Giuseppe
    Lamura, Antonio
    INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW, 2011, 21 (05) : 572 - 583
  • [32] THERMAL FLUCTUATIONS AND MOLECULAR SCATTERING OF LIGHT IN A FLUID NEAR STATE OF CONVECTIVE INSTABILITY
    LESNIKOV, VP
    FISHER, IZ
    ZHURNAL EKSPERIMENTALNOI I TEORETICHESKOI FIZIKI, 1974, 67 (04): : 1341 - 1348
  • [33] Thermal-vibration convective instability of mechanical quasiequilibrium of inclined layer of fluid
    Gershuin, G.Z.
    Demin, V.A.
    Izvestiya Akademii Nauk. Mekhanika Zhidkosti I Gaza, 1600, (01): : 8 - 16
  • [34] PHASE-EQUILIBRIA AND THERMODYNAMIC PROPERTIES OF MOLECULAR FLUIDS FROM PERTURBATION-THEORY .2. BINARY-FLUID MIXTURES
    SHUKLA, K
    FLUID PHASE EQUILIBRIA, 1994, 99 : 153 - 166
  • [35] CROSSOVER FROM CRITICAL TO TRICRITICAL BEHAVIOR IN A NONEQUILIBRIUM SYSTEM - THE CONVECTIVE INSTABILITY IN A BINARY FLUID MIXTURE
    STEINBERG, V
    BRAND, HR
    PHYSICAL REVIEW A, 1984, 30 (06): : 3366 - 3368
  • [36] ANALOG OF THE BENJAMIN-FEIR INSTABILITY NEAR THE ONSET OF CONVECTION IN BINARY FLUID MIXTURES
    BRAND, HR
    STEINBERG, V
    PHYSICAL REVIEW A, 1984, 29 (04): : 2303 - 2304
  • [37] 2-FLUID EFFECTS IN THE CONVECTIVE INSTABILITY OF HE-3-HE-4 SUPERFLUID MIXTURES
    STEINBERG, V
    BRAND, HR
    PHYSICAL REVIEW B, 1983, 28 (03): : 1618 - 1620
  • [38] AMPLITUDE EQUATION NEAR A POLYCRITICAL POINT FOR THE CONVECTIVE INSTABILITY OF A BINARY FLUID MIXTURE IN A POROUS-MEDIUM
    BRAND, HR
    HOHENBERG, PC
    STEINBERG, V
    PHYSICAL REVIEW A, 1983, 27 (01): : 591 - 593
  • [39] Soret effect on the onset of viscous dissipation thermal instability for Poiseuille flows in binary mixtures
    Amar, K. Ali
    Hirata, S. C.
    Ouarzazi, M. N.
    PHYSICS OF FLUIDS, 2022, 34 (11)
  • [40] An overview of the statistical properties of two-dimensional turbulence in fluids with particles, conducting fluids, fluids with polymer additives, binary-fluid mixtures, and superfluids
    Pandit, Rahul
    Banerjee, Debarghya
    Bhatnagar, Akshay
    Brachet, Marc
    Gupta, Anupam
    Mitra, Dhrubaditya
    Pal, Nairita
    Perlekar, Prasad
    Ray, Samriddhi Sankar
    Shukla, Vishwanath
    Vincenzi, Dario
    PHYSICS OF FLUIDS, 2017, 29 (11)
12345