... manuscript received April 5, 2016; published online May 3, 2016. Assoc. Editor: Amy Fleischer. 10 09 2015 05 04 2016 Boiling Bubble growth Heat transfer enhancement Micro heat transfer Nanoscale heat transfer Boiling heat transfer is an important heat transfer process in many...

...Sambhaji T. Kadam; Kuldeep Baghel; Ritunesh Kumar Substituting Eq. (3) , (4) , (6) , (8) , (10) , (11) , (13)–(16) into the Eq. (2) , the bubble growth rate is given by the following equation: (23) q " A c A ch γ 2 r 2 = r 2 dr...

...-prediction of bubble growth by two-fluid theory was found, even at atmospheric conditions (see Fig. 7 ), though no extreme deviation was encountered, as is later seen with some of the nucleate boiling models. Fig. 7 Prediction of bubble growth rate at high superheat, Ste=0.39 (time is shifted so...

... the surface of the bubble. It is given as follows: 4 F = E ( d a d t ) − 1 This is a new equation that can be applied to bubble growth controlled by thermal diffusion, mass diffusion, or inertia. For bubble growth controlled by thermal diffusion and at high Ja numbers ( Ja...

... the cases. Due to higher vapor generation, the bubble growth rate is faster for the case of variable thermal properties as compared with the constant thermal properties and thus, a smaller time period can be observed in the case of variable thermal properties. Son and Dhir 3 reported the bubble release...

... and generates a heat flux of more than 750 MW/m 2 . A stroboscopic technique with a time resolution of 30 ns and spatial resolution of 2 μm was used to capture the dynamics of the bubble growth and collapse. From the nucleation theory, the nucleation temperatures are close to the kinetic limit of superheat...

... Editor: M. K. Jensen. 31 10 2003 30 04 2004 calcium compounds water boiling heat transfer bubbles Boiling Bubble Growth Crystal Growth Fouling Heat Transfer Modeling Scaling Heat transfer to hard waters is an essential operation in most...

... on the above observations. Some of the key features, such s rapid bubble growth, flow reversal, nucleate boiling dominant heat transfer have been confirmed with high speed video pictures and experimental data. 7 Further experimental research is needed to generate more data for developing more accurate...

... as the heater is covered by vapor all the time. In general, boiling on microheaters is characterized by larger bubble departure sizes, smaller bubble growth rates due to the dryout of microlayer as the bubble grows, and higher bubble incipience superheat. As the heater size decreases, the boiling curve shifts...

... by the Heat Transfer Division September 18, 2002; revision received May 16, 2003. Associate Editor: V. P. Carey. 18 September 2002 16 May 2003 23 09 2003 surfactants convection bubbles adsorption Additives Bubble Growth Heat Transfer Interface Microscale Thermocapillary...

... Editor: V. P. Carey. 30 April 2001 20 February 2003 17 07 2003 bubbles nucleation heat transfer contact angle Bubble Growth Heat Transfer Microscale Phase Change Device miniaturization evolved from IC-based micro-fabrication technology has brought forth...

..., and merging criteria, as well as surface cavity size characterization. It is postulated that for liquid/solid interface temperatures at and above the LFP, a sufficient number of cavities (about 20 percent) are activated and the bubble growth rates are sufficiently fast that a continuous vapor layer...

... . Manuscript received by the Heat Transfer Division July 27, 2001; revision received March 12, 2002. Associate Editor: D. B. R. Kenning. 27 July 2001 12 March 2002 16 07 2002 boiling heat transfer bubbles flow visualisation Boiling Bubble Growth Enhancement Heat Transfer...

... spherical bubble is nucleated with a waiting period up to 2 sec while the wall temperature can drop up to 8°C depending on the magnitude of the input current. After the formation of a thermal bubble, the resister temperature rises and reaches a steady state eventually. The bubble growth rate is found...

.... , and Nydahl , J. E. , 1989 , “ Numerical Calculation of Bubble Growth in Nucleate Boiling From Inception Through Departure ,” ASME J. Heat Transfer , 111 , pp. 474 – 479 . Welch , S. W. J. , 1998 , “ Direct Simulation of Vapor Bubble Growth ,” Int. J. Heat Mass Transf. , 41 , pp. 1655...

... correspondence should be addressed. Contributed by the Heat Transfer Division for publication in the JOURNAL OI< HISAT TRANSFER. Manuscript received by the Heat Transfer Division, Sept. 3, 1997; revision received, May 5, 1999. Keywords: Boiling, Bubble Growth, Microgravity, Two- Phase, Vaporization. Associate...

... simulation, the location where the vapor-liquid interface contacts the wall is observed to expand and then retract as the bubble grows and departs. The effect of static contact angle and wall superheat on bubble dynamics has been quantified. The bubble growth predicted from numerical analysis has been found...

... that homogeneous nucleation occurs on the microresistors according to the electrothermal model and experimental measurements. 06 Jan 1997 06 Mar 1998 05 12 2007 Bubble Growth Phase Change Thermocapillary Thermophysics Thin Films 3M, C., 1991, Fluorinert Electronic Liquids Product...