[PDF] Top 20 Sliding bubble dynamics and the effects on surface heat transfer

... the surface and bulk fluid (∆T ) and of the heat transfer coefficient enhancement factor (), defined as the ratio of the bubble enhanced heat transfer coefficient to that of ... See full document

... Abstract—The dynamics of bubbly flows are rich and varied, with the understanding of these flows a major issue for many engineering ...a bubble sliding underneath an inclined surface is common ... See full document

... Instantaneous heat flux was measured using a micro-foil heat flux sensor (Rdf, Model number 20453-1 ...the surface of a brass cylinder of 11 mm outer ...the heat flux probe is explained ... See full document

... the bubble mechanics. Surfactants can gather on the surface of the bubble, reducing its mobility and dramatically reducing the surface ...the bubble rises through the contaminated ... See full document

... fluid dynamics, the stagnation point flow and flow over a stretching surface are important in theoretical and applications point of ...fluid dynamics, stagnation is a point in a flow field where the ... See full document

... We assume that the flow is potential and that there is no boundary layer sepa- ration. In [4] [10] [11] [12] this approximation was discussed and justified for intermediate Reynolds numbers 1 << Re < 1000. It ... See full document

... flow heat exchangers, which are at the forefront of energy ...the heat exchange surfaces of the device, with this behaviour thought to directly affect convective heat ...in bubble movement are ... See full document

... and sliding bubbles in a horizontal duct with forced convection heat ...the bubble dynamics and the thermal field on the heated wall can be acquired using high-speed cameras and Thermochromic ... See full document

... the surface forces in the momentum ...of surface forces in microscale devices such as the van der Waals force, electrostatic force, and steric ...integral effects of these surface ... See full document

... solution effects of different Rayleigh-Plesset models (R-P) for simulating the growth/collapse dynamics and thermal behaviour of homogeneous gas ...cavitation bubble calculations are obtained from ... See full document

... air bubble sliding under a heated, inclined surface in quiescent water to provide new insights into the intricate sliding bubble wake structure and the associated convective cooling ... See full document

... a bubble is replaced by the cooler bulk liquid during bubble ...heater surface temperature reduces due to contact with cooler liquid and a cyclic variation in the local heater temperature ... See full document

... the heat transfer can be seen between the two ...the bubble has a direction associated with it. In the case where the bubble oscillates parallel to the block surface, the turbulent ... See full document

... of surface roughness on heat transfer rate for selected heater input and varying plate ...of heat transfer coefficient with plate orientation for selected voltages of 75, 100, 125, 150 ... See full document

... Nomenclature English A Heat transfer surface area of a A_ A, A, As A, Ar Heat transfer area COP3ndo for the heat exchanger in the m m2 m2 Heat transfer area for the condenser in the end[r] ... See full document

... Kerr theorizes that at low temperatures the comparatively large air content of water softens the blows, while at higher temperatures the relatively high vapor pre[r] ... See full document

... of heat exchangers permits reduction in size and weight, raises average rate of heat transfer and lowers the difference in temperature betwee ...Several heat transfer enhancement ... See full document

... of surface tension force at the vicinity of triple line, 2 r d  lg cos  o ...of bubble expansion in vertical direction [13] and gas flow rate ...of surface tension forces, where p is t liquid ... See full document

... fluid dynamics and heat ...Fluid Dynamics or CFD in short, and it has made it possible to analyze complex flow geometries with the same ease as that faced while solving idealized problems using ... See full document

... fin heat sink and its performance comparisons with a plate fin heat ...studied heat transfer analysis of lateral perforated fin heat ...total heat transfer and ... See full document