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Physical Review Letters
Volumn 71, Issue 13, 1993, Pages 2026-2029
Spiral defect chaos in large aspect ratio Rayleigh-Bénard convection
Author keywords

[No Author keywords available]
Indexed keywords

EID: 6144260323     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.71.2026     Document Type: Article
Times cited : (265)
References (22)
  • 4
    • 84927876866 scopus 로고    scopus 로고
    • We first observed the chaotic state under non-Oberbeck-Boussinesq (non-OB) conditions.
  • 13
    • 84951362799 scopus 로고
    • We determined the validity of the Oberbeck-Boussinesq (OB) approximation to the Navier-Stokes equations for our fluid by calculating the non-OB parameter scrP defined by, scrP varies approximately as scrPc( 1 + p ε ). We found scrPc= - 0.7, -1.05, and -2.1 and p = 1.1, 1.46, and 1.79 for pressures P = 41.5, 32.7, and 25.6 bars, respectively. It is important to note that non-OB effects scale as 6 scrP2/ Rc, where Rc= 1708, so that they need not be important when scrP is O(1).
    • (1967) J. Fluid Mech. , vol.30 , pp. 625
    • Busse, F.H.1
  • 14
    • 84927876865 scopus 로고    scopus 로고
    • See Ref. [10]. The Prandtl numbers sigma were 1.06, 0.96, and 0.86 for P = 41.5, 32.7, and 25.6 bars, respectively. Experimentally, we found that the chaotic state was qualitatively the same over this range.
  • 18
    • 84927876864 scopus 로고    scopus 로고
    • Very recently, M. Assenheimer and V. Steinberg (to be published) reported spatiotemporally chaotic behavior of a many-target pattern, as well as a transition to a many-spiral state, near the critical point of SF6.

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