Results 211 to 220 of about 3,586 (258)
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Boiling crisis on surfaces with porous coating
Journal of Engineering Physics, 1974Experimental values on nucleate and film boiling of carbon dioxide on polished and porous cylindrical surfaces under conditions of saturation at reduced pressures, P/Pcrit=0.93 and 0.97 are discussed. A considerable increase of the maximal, minimal specific heat fluxes and maximal heat transfer coefficient was observed on a horizontal tube with thin ...
G. P. Nikolaev, Yu. K. Tokalov
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Extended development of a bubble percolation method to predict boiling crisis of flow boiling
International Journal of Heat and Mass Transfer, 2021Abstract Due to the important role critical heat flux (CHF) plays in the nucleate boiling field, it is of great significance to study CHF, especially the mechanism of boiling crisis occurrence. In this study, an extended numerical model to predict CHF for flow boiling was proposed based on the Monte Carlo method.
Kai Wang +4 more
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Thermodynamic crisis of boiling
Journal of Engineering Thermophysics, 2007The procedure of calculation of the dynamics of rapid near-wall vaporization near a metallic heater is considered. A physical model of explosive boiling-up on bubbles of fluctuation origin is used. The model is limited to regimes when the motion of bubbles can be ignored and convective flows do not have enough time to develop.
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Stability analysis of the pool-boiling crisis
Journal of Physics: Condensed Matter, 1996A stability analysis of the contact line at the bottom of vapour stems is undertaken in order to find out the dominant parameters responsible for the transition from nucleate boiling to film boiling. For strong constraints, the increase in the evaporation rate depletes the macrolayer and, as consequence, there is an enlargement of the dry areas.
A Steinchen, K Sefiane
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The Nile crisis comes to the boil
African Security Review, 2010Abstract A crisis is emerging in the Nile Basin, where some 300 million people in Egypt, Sudan, Ethiopia, Uganda, the Democratic Republic of Congo, Rwanda, Kenya, Tanzania and Burundi rely on the Nile directly or indirectly. Egypt and Sudan wish to preserve a regime based on treaties drawn up during the colonial era that allocated the vast majority of ...
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Transient boiling crisis of cryogenic liquids
International Journal of Heat and Mass Transfer, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Deev, V. I. +3 more
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Film boiling crisis on a submerged heating surface
Experimental Thermal and Fluid Science, 1990Abstract A review is presented along with the results of a systematic investigation of film boiling crisis characteristics for the combined influence of pressure, kind of liquid, thermal properties, and size of heater. A thermohydrodynamic approach to the analysis of film boiling crisis is suggested. Within that framework a generalization of data on
V.V Klimenko, S.Yu Snytin
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Dissipative model of film boiling crisis
International Journal of Heat and Mass Transfer, 1987Abstract A dissipative model of the film boiling crisis based on the variational hypothesis of nonequilibrium phase change is presented. Transfer systems—characteristic for film and transition boiling of a liquid droplet on a plane horizontal and isothermal heating surface—were constructed.
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Boiling and crisis of boiling of a two-phase liquid in spherical microfuel fills
Atomic Energy, 2009Heat transfer from microfuel fill to a two-phase coolant by means of a phase transition can occur in two forms: evaporation and bubble boiling. The evaporation regime proceeds on menisci along the lines of triple contact of phases. This regime is stable and promising for technical applications. Bubble boiling occurs when the surface of the microfuel is
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