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Keywords: chaos
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Journal Articles
Article Type: Research Papers
J. Heat Transfer. August 2011, 133(8): 081504.
Published Online: May 4, 2011
... of the experimentally observed regimes of functioning of the PHP such as chaotic or intermittent oscillations of large amplitudes. Some results on the PHP heat transfer are discussed. 08 11 2010 04 03 2011 04 05 2011 04 05 2011 bubbles capillarity chaos evaporation film condensation...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. July 2010, 132(7): 072704.
Published Online: May 5, 2010
...Sy-Bor Wen A methodology is proposed, which is capable of determining the near field thermal radiation based on the Wiener chaos expansion. The approach has no explicit constraints on the geometry and temperature distributions of the system and can be easily included with classical electrodynamics...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. September 2009, 131(9): 092403.
Published Online: June 24, 2009
... chaotic systems result in l m ∝ Pe γ , where 0 < γ < 1 ( 22 23 ). Actual value of γ depends on the extent of chaos within the system. For example γ ≤ 0.25 was observed for certain partially chaotic flows ( 7 8 ). The aforementioned scaling trends...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. September 2009, 131(9): 091902.
Published Online: June 22, 2009
... to Eulerian chaos observed in asymmetric wavy and grooved channels. The periodic and quasiperiodic flows are characterized by fundamental frequencies ω 1 , and ω 1 and ω 2 , respectively. For the aspect ratio r = 0.375 , the Nusselt number increases slightly as the Reynolds number increases in the laminar...
Journal Articles
Article Type: Micro/Nanoscale Heat Transfer—Part Ii
J. Heat Transfer. April 2009, 131(4): 043210.
Published Online: February 24, 2009
... the local maxima may indicate limitations associated with the internal working fluid and the overall functionality of the heat pipe. 15 11 2008 17 12 2008 24 02 2009 bubbles channel flow chaos condensation heat pipes heat transfer oscillations vaporisation Recently...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. February 2008, 130(2): 024501.
Published Online: February 4, 2008
.... Fluids 1070-6631 10.1063/1.1458932 , 14 , pp. 1315 – 1325 . Ottino , J. M. , 1989 , The Kinematics of Mixing: Stretching, Chaos and Transport , Cambridge University Press , Cambridge . Kusch , H. A. , and Ottino , J. M. , 1992 , “ Experiments on Mixing in Continuous...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. September 2007, 129(9): 1127–1133.
Published Online: September 19, 2006
...A. F. Emery; D. Bardot Stochastic heat transfer problems are often solved using a perturbation approach that yields estimates of mean values and standard deviations for properties and boundary conditions that are random variables. Methods based on polynomial chaos and Wick products can be used when...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. August 2005, 127(8): 820–829.
Published Online: February 8, 2005
... for earth-based systems. water boiling two-phase flow channel flow zero gravity experiments heat transfer mass transfer flow visualisation chaos gravity waves 19 04 2004 08 02 2005 Figure 2 shows the details of the test section, which is a combination of three layers...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. August 2003, 125(4): 612–623.
Published Online: July 17, 2003
... to the model shows that only temporal instability exists and Lorenz chaos is possible, otherwise, for large values both spatial and temporal instabilities occur leading to cellular flow and intermittency chaos. The model predicted some additional phenomena opening for experimental observation. It seems...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. August 2002, 124(4): 650–659.
Published Online: July 16, 2002
... steady state to oscillatory flow, have been found for cavities of aspect ratios Ar in the range 1–5. Transition to chaos has also been examined for these cases. The results show that Ra I = 3583 , 2.545 × 10 4 and 5.5 × 10 5 and Ra II = 4.07 × 10 5 , 1.65 × 10 6 and 1.30 × 10 7 for aspect ratios of 1, 2...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. June 2002, 124(3): 564–570.
Published Online: May 10, 2002
... measurement jets chaos flow instability rapid thermal processing convection Rayleigh scattering Experimental Mixed Convection Temperature Thin Films Transient Figure 8 ( a ) shows that the boundary layer at the disc surface becomes unstable at 25 to 30 seconds as a couple of thermal...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. February 2001, 123(1): 145–156.
Published Online: August 17, 2000
..., the only impact that the transition to chaos causes on the predicted results in terms of the averaged heat flux is a minor loss of accuracy. Therefore, the predictability of the results in the sense of the averaged heat flux is not significantly affected by the transition from steady to weak-turbulent...