...-state subcooled and low-quality film boiling regimes with water as the working fluid in vertical tubular test sections. A low-quality water film boiling (LWFB) database is consolidated with a total of 22,813 experimental data points, which cover a wide flow range of the system pressure from 0.1 to 9.0...

...S. Mortazavi Flow boiling is a common phenomenon in modern technology and industries. A finite difference Front Tracking method is used to study film boiling on a flat plate subject to a constant heat flux. Large density ratios are examined (1000, 2000). The flow structure including the circulation...

... represented by chilldown curves and boiling curves, gravity effects, and Leidenfrost rewet point temperatures. Additionally, detailed discussion is given on the film boiling heat transfer and rewet temperature in terms of various contributing factors such as gravitational acceleration, spray mass flux...

... / δ v dx DELTA FS was built to estimate the effect of the inclination angle on the interfacial wavy motion as shown in Fig. 3 . It included a test section, a viewing chamber, a boiler, and a flow line to initiate and maintain the film boiling process. The test section is mounted on one...

... and vapor film generation on the boiling surfaces has revealed significant insights into the boiling mechanisms at low saturation pressures. 23 03 2009 17 08 2009 29 12 2009 29 12 2009 bubbles film boiling flow visualisation heat transfer liquid films natural convection...

... the advantage of maximizing the contact area, while avoiding fouling and wall resistance. rapid boiling rapid phase transfer two-phase droplet three-fluid system superheat depressurization vaporization liquid propane droplets drops film boiling heat transfer hydrodynamics liquid films...

... transition/film boiling is expected. 20 06 2008 06 03 2009 15 10 2009 film boiling heat transfer liquid metals magnetohydrodynamics liquid-metal diverters Tokamak reactors MHD boiling ARIES and APEX fusion reactor designs The magnetohydrodynamic (MHD) single-phase...

...Vinod Narayanan; Heiner Linke; Mike Taormina 28 05 2009 drops film boiling flow visualisation pumps 2009 American Society of Mechanical Engineers ...

... (Type-A) and 25 μ m (Type-B). Experiments were conducted for the nucleate boiling and film boiling regimes for saturated and subcooled conditions with liquid subcooling of 0 – 30 ° C using a dielectric fluorocarbon liquid (PF-5060) as test fluid. The pool boiling heat flux data obtained from the bare...

...R. Sinha; A. K. Nayak; B. R. Sehgal An empirical model for natural convection heat transfer for film-boiling condition has been developed for volumetrically heated particulate debris beds when flooded with water at the top of the bed. The model has been derived from the quenching data generated...

... block. Pool boiling experiments using refrigerant PF-5060 as the working liquid were conducted to obtain the pool “boiling curve.” The experiments were conducted in nucleate and film boiling regimes to investigate the effect of MWCNT height on pool boiling performance. Reference (control) experiments...

... of CHF conditions and deterioration of heat transfer in the pseudo-film boiling regime. The influence of the confined space was particularly significant when greater Marangoni forces were present under reduced gravity conditions. The CHF value of x (molar fraction)=0.025, which corresponded to weaker...

... Method,” J. Mech. Eng. Sci., IMechE Part C, 218, pp. 195–205 ). The work models saturated pool boiling of water at 1 bar on a large (much larger than the minimum wavelength of 2D Taylor waves) and thin horizontal copper strip. The pool height is 0.7 mm , indicating thin film boiling. In the present model...

...D. K. Agarwal; S. W. J. Welch; G. Biswas, Mem. ASME,; F. Durst A planar simulation of film boiling and bubble formation in water at 373°C, 219 bar on an isothermal horizontal surface was performed by using a volume of fluid (VOF) based interface tracking method. The complete Navier-Stokes equations...

...John D. Bernardin; Issam Mudawar This study presents, for impinging droplets and sprays, a model of the Leidenfrost point (LFP); the minimum liquid/solid interface temperature required to support film boiling on a smooth surface. The present model is an extension of a previously developed sessile...

... February 20, 2003; revision received September 24, 2003. Associate Editor: M. K. Jensen. 20 February 2003 24 September 2003 10 03 2004 convection heat conduction channel flow flow instability laminar flow surface tension liquid films film boiling evaporation shear flow...

... analysis can no longer be performed independently of the working fluid since the heat transfer coefficient is temperature dependent and includes the nucleate, the transition and the film boiling regimes where the boiling curve is obtained experimentally for a specific fluid. The heat transfer process...

...John D. Bernardin, Assoc. Mem. ASME; Issam Mudawar, Fellow ASME This study presents a new mechanistic model of the Leidenfrost point (LFP); the minimum liquid/solid interface temperature required to support film boiling on a smooth surface. The model is structured around bubble nucleation, growth...

...D. Banerjee; V. K. Dhir Experiments were performed to study subcooled film boiling of performance liquid PF-5060 (made by 3-M Company) on a horizontal copper disc. The experiments were performed for two regimes of film boiling involving departing vapor bubbles (low subcooling) and nondeparting...

...D. Banerjee; V. K. Dhir In this work subcooled film boiling on a horizontal disc was studied analytically/numerically. Linearized stability analysis of a vapor film underlying a pool of heavier liquid was performed in three-dimensional, cylindrical coordinates. From the analysis the dominant...