... flow patterns (annular, wave, slug, and plug) were observed, and the effects of quality and mass flux on the condensing heat transfer were analyzed. The mass flux and steam quality primarily affect the condensing heat transfer coefficient in the shear-dominated flow regime. The condensing heat transfer...

... with only dimples the dimple transverse spacing-to-diameter ratio S Z 2 / D = 1 . 25 . In order to obtain more physical understandings about the flow and heat transfer characteristics in the channels with pin fin-dimple arrays of different configurations, additional three...

... ripening and supercooling are discussed along with the flow properties. Heat transfer coefficient data were obtained for an extensive range of Reynolds numbers (Re cf  ∼ 1800–11000) and ice fractions ( X s  = 0–25%) in both the wide and narrow flow channel configurations. Figure 6 compares...

...Koichi Ichimiya; Shuichi Watanabe Numerical analyses were performed to determine the oscillation effect of an impingement surface on the impingement heat transfer and flow with a confined wall. As a moving boundary problem, two-dimensional governing equations were solved for the Reynolds numbers Re...

...N. Srihari; Sarit K. Das Transient analysis helps us to predict the behavior of heat exchangers subjected to various operational disturbances due to sudden change in temperature or flow rates of the working fluids. The present experimental analysis deals with the effect of flow distribution...

...Wei Liu; Hideki Nariai Homogeneous nucleation, although being discounted as a mechanism for vapor formation for water in most conditions, is found to possibly occur under some extreme conditions in subcooled flow boiling. Under the conditions, vapor bubbles of molecular dimensions generated...

... in these two passages for incompressible laminar flow. These correlations require knowledge of local and average heat transfer for unobstructed fluid flowing through these passages with sufficient accuracy. Because existing correlations lack sufficient accuracy, this presentation includes an appendix...

... perspectives that still remain unresolved. The present work focuses on obtaining the fundamental heat transfer data and two-phase flow patterns present during flow boiling in microchannels. An experimental investigation is performed for flow boiling using water in six parallel, horizontal microchannels...

... Fluids in Heated Fibrous Porous Media During Composites Processing ,” ASME J. Heat Transfer , 123 , pp. 178 – 187 . Advani, S. G., Bruschke, M. V., and Parnas, R. S., 1994, “Resin Transfer Molding Flow Phenomena in Polymeric Composites,” Flow and Rheology in Polymer Composites Manufacturing , S. G...

...Satish G. Kandlikar, ASME Fellow; Murat Bulut Mixtures of ethylene glycol and water are used in cooling the engines in automotive applications. Heat is transferred essentially under subcooled flow boiling conditions as the mixture flows over the hot surfaces, which are at temperatures well above...

...Paolo Ruffino; Marino di Marzo Two temperatures can be detected in a hot gas laden with water droplets. The lower one is the temperature read by a sensor immersed in the flow. This measurement is affected by significant evaporative cooling resulting in readings much below the real gas temperature...

...Erick A. Siba; M. Ganesa-Pillai; Kendall T. Harris; A. Haji-Sheikh This study concerns the flow and heat transfer characteristics of a turbulent submerged circular air jet impinging on a horizontal flat surface when free stream turbulence exceeds 20 percent. The turbulent fluctuations of the free...

... 01 2003 convection vaporisation boiling pipe flow Flow Forced Convection Boiling This technical note provides commentary on four recently published correlations for convective vaporization in tubes. It appears that they were formulated inconsistent with accepted practice...

...S. Kang; R. P. Roy, Professor, Fellow ASME Measurements of vapor fraction and bubble axial velocity were carried out in subcooled boiling flow using a newly designed two-sensor fiber-optic probe. The sensors encountered the axial motion of the vapor bubbles essentially head-on. The new measurements...

...S. L. Lee; Y. F. Chen The NAPPLE algorithm for incompressible viscous flow on Cartesian grid system is extended to nonorthogonal curvilinear grid system in this paper. A pressure-linked equation is obtained by substituting the discretized momentum equations into the discretized continuity equation...

... on suction side, (4) squealer on pressure and suction sides, (5) squealer on pressure side plus mid camber line, and (6) squealer on suction side plus mid camber line. The flow condition during the blowdown tests corresponds to an overall pressure ratio of 1.32 and exit Reynolds number based on axial chord...

...R. P. Roy, Fellow ASME; S. Kang; J. A. Zarate; A. Laporta Experiments and simulations were carried out in this investigation of turbulent subcooled boiling flow of Refrigerant-113 through a vertical annular channel whose inner wall only was heated. The measurements used, simultaneously, a two...

.... A. , Barabino , G. , Sasisekharan , R. , Harmon , W. , Cooney , C. L. , and Langer , R. , 1999 , “ Ex Vivo Evaluation of a Taylor–Couette Flow, Immobilized Heparinase I Device for Clinical Application ,” Proc. Natl. Acad. Sci. U.S.A. , 96 , pp. 2350 – 2355 . Criminale , W. O...

...K. N. Rainey; G. Li; S. M. You The present research is an experimental study of subcooled flow boiling behavior using flat, microporous-enhanced square heater surfaces in pure FC-72. Two 1-cm 2 copper surfaces, one highly polished (plain) and one microporous coated, were flush-mounted into a 12.7...

...Ahmadali Tabatabai; Amir Faghri A new flow map is proposed to emphasize the importance of surface tension in two-phase flow in horizontal miniature and micro tubes. A transition boundary based on a force balance including shear, buoyancy and surface tension forces is also proposed. The flow map...