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

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

Over the previous twenty years, two-phase movement and warmth move difficulties linked to two-phase phenomena were a problem to many investigators. Two-phase circulate purposes are present in quite a lot of engineering platforms, corresponding to nuclear and traditional energy crops, evaporators of refrigeration platforms and a large vari­ ety of evaporative and condensive warmth exchangers within the chemical undefined. This book is predicated at the invited lectures awarded on the NATO complicated study Workshop at the Advances in Two-Phase movement 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 examine and functions in dif­ ferent sectors (academia, executive, undefined) of member international locations of NATO. a few clinical 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 circulate and warmth move and formulated techniques for destiny learn instructions. to accomplish those pursuits, invited key papers and a constrained variety of contributions have been offered and mentioned. the explicit features of the topic have been taken care of extensive within the panel periods, and the unresolved difficulties pointed out. compatible as a realistic reference, those volumes contain a scientific method of two-phase movement 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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Since w may be both positive and negative, the same holds also for w: This exposition of the motion of a slug of variable mass implies certain limiting values. 13) implies that the slug length L becomes zero after a certain distance r,max has been travelled by the slug. 9). 20) seems originally to contain 5 parameters. 24) the solution will contain only 3 parameters: ~/w, S/w, B/w. 2. 6 . : ~.. t'--.. I I ! - I ! 6 i ! 2 Fig. lOa and b. 0 The normalized velocity normalized distance we,. 0 w~- Vnorm as function of the They describe how the plug's velocity increases initially rather rapidly and then reduces to an assymptotic value 1.

00 1. 80-11. 4-393. 3-488. 8-415. 1-375. TABLE 4. 037 514 Grolmes, Lambert, and Fauske [25] investigated flooding in a nitrogen and water system. The tube diameters ranged from 4 mm to 25 mm 10. Length to diameter ratios from 10 to 100 were studied. Measurements included gas and liquid flow rates and pressure drop. The onset of flooding was determined by both visual observation and pressure drop. For the larger tubes (6, 13, 25 mm), the liquid film waviness grew steadily in amplitude over the entire length of the tube as gas velocity increased.

However, it also indicates regions in which the plug length do change with distance at constant velocity. Thus the two cases treated here do have their practical relevance) . 5) = 0 At this point a non-dimensional formulation of the problem must be sought. 12) o Due to the way in which the non-linearity of the equation occurs the solution cannot easily be expressed through elementary functions. A numerical Runge-Kutta method is introduced. 11) then becomes: which can be written: Finally: d~ ds _ 2~ + 1..

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