Advances in Two-Phase Flow and Heat Transfer: Fundamentals by Efstathios E. Michaelides (auth.), S. Kakaç, M. Ishii (eds.)

By Efstathios E. Michaelides (auth.), S. Kakaç, M. Ishii (eds.)

Over the earlier 20 years, two-phase circulation and warmth move difficulties linked to two-phase phenomena were a problem to many investigators. Two-phase circulate purposes are present in a variety of engineering structures, resembling nuclear and traditional strength vegetation, evaporators of refrigeration structures and a large vari­ ety of evaporative and condensive warmth exchangers within the chemical undefined. This book relies at the invited lectures awarded on the NATO complex learn Workshop at the Advances in Two-Phase circulate and warmth move. The Horkshop used to be attended through greater than 50 best scientists and working towards engineers who paintings actively on two-phase circulation and warmth move learn and purposes in dif­ ferent sectors (academia, govt, undefined) of member nations of NATO. a few medical leaders and specialists at the material from the non-NATO international locations have been additionally invited. They convened to debate the state of the art in two-phase movement and warmth move and formulated ideas for destiny examine instructions. to accomplish those targets, invited key papers and a restricted variety of contributions have been offered and mentioned. the categorical elements of the topic have been handled extensive within the panel periods, and the unresolved difficulties pointed out. compatible as a realistic reference, those volumes include a scientific method of two-phase circulation analysis.

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Extra resources for Advances in Two-Phase Flow and Heat Transfer: Fundamentals and Applications Volume II

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505 FLOODING IN COUNTER-CURRENT TWO-PHASE FLOW W. A. Ragland and E. N. A. A. 1. ABSTRACT This summary presents the various definitions which have been proposed for the flooding phenomenon. A collection of experimental results for vertical flooding is presented to show that although the research has included many parameters, a large portion of the work has centered on air and water in tubes ranging from 38 mm to 50 mm in diameter. Some detail of individual experiments is presented to demonstrate various types of apparatus and instrumentation in use.

7) The pressure difference will here be introduced under the same assumption as in Sec. e. 4) This equation is now non-dimensionalized in order to identify the parameters of the problem. In accordance with the procedure in Sec. 10) may now be reformulated as: dv v2 v2 2(1+wsJ ~ + ~ [(1+wJ -1+c]- ~ + (1+Wi;:J2g + dt v2 L 2 P 1 2g AL /. 15) o 1 + (1+w J - - vo 2 In order to more properly understand the physical significance of the parameters, the two parameters 0 and S are introduced analogou: to the case in Sec.

0. 8 mm nozze1 for gas entry and an expanding taper on the main tube to pull the liquid film away from the stream of entering gas. 0 respectively. 2 m/s and corresponded to gas Reynolds numbers from 22,250 to 59,971. The data recorded included liquid and gas flow rates. Pressure level and film thickness was measured at four axial locations. The film thickness was measured using conductivity probes. At the two lower liquid flow rates, waves on the falling film changed only slightly in appearance with increases in air flow.

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