Begell House Inc.
Multiphase Science and Technology
MST
0276-1459
26
1
2014
EXPERIMENTAL DATA ON PHASE DISTRIBUTION IN THE UPWARD HIGH PRESSURE STEAM-WATER FLOW IN A VERTICAL TUBE UNDER ANNULAR-DISPERSED REGIME. PART 1. PROFILES OF PHASE MASS FLUXES AND VELOCITIES
1-61
10.1615/MultScienTechn.v26.i1.10
P. L.
Kirillov
State Scientific Center of Russian Federation−Institute for Physics & Power Engineering, 249033 Obninsk, Kaluga Region, Russian Federation
Yu. Yu.
Shtein
State Scientific Center of Russian Federation−Institute for Physics & Power Engineering, 249033 Obninsk, Kaluga Region, Russian Federation
R. V.
Shumsky
State Scientific Center of Russian Federation−Institute for Physics & Power Engineering, 249033 Obninsk, Kaluga Region, Russian Federation
Yu. D.
Levchenko
State Scientific Center of Russian Federation−Institute for Physics & Power Engineering, 249033 Obninsk, Kaluga Region, Russian Federation
upward steam-water flow
vertical tube
high pressure
annular-dispersed regime
isokinetic sampling probe technique
phase distribution
profiles
phase mass flux
phase linear velocity
experimental tabular data
The paper presents a comprehensive review of fundamental research carried out by the State Scientific Center of Russian Federation-Institute for Physics & Power Engineering (SSC RF-IPPE) on the structural parameters of high-pressure steam-water flows. Experiments have been carried out on the basis of an integrated procedure providing simultaneous measurement of local hydrodynamic flow characteristics by different methods. Part 1 presents the tabular data of experiments on determining phase distribution in upward steam-water flow at pressures of 4.9, 6.8, 9.8, and 13.7 MPa by the isokinetic sampling probe technique. The methodology of these experiments is considered, and obtained results are discussed regarding distribution of the profiles of phase mass flux and steam velocity as well as the effect of heat flux on phase distribution.
FIN CONDENSATION IN VARIABLE GRAVITY ENVIRONMENT
63-81
10.1615/MultScienTechn.v26.i1.20
Andrey
Glushchuk
Microgravity Research Centre, Universite libre de Bruxelles, Avenue F. Roosevelt 50, 1050 Bruxelles, Belgium
Christophe
Minetti
Microgravity Research Centre, Universite libre de Bruxelles, Avenue F. Roosevelt 50, 1050 Bruxelles, Belgium
Cosimo
Buffone
Tianjin University of Commerce
condensation
liquid film
microgravity
We report on a condensation experiment of pure HFE-7100 on a curvilinear brass fin of 16 mm height cooled from the base by a Peltier/heat pipe/heat sink assembly. The experiment has been carried out in variable gravity environment aboard the Airbus A300 Zero-G aircraft of the European Space Agency performing parabolic trajectories during which the gravity has been varied from 1g to 1.8g and eventually to 10-2g. An afocal optical system has been developed to measure the condensate liquid film on the fin with an accuracy of around 6 µm. The temporal evolutions of the liquid film thickness along the fin is determined and used to deduce the local Nusselt numbers in various gravity conditions. The derived heat of condensation increases in hypergravity and decreases noticeably during microgravity. This means that in microgravity a condenser should be designed with a larger surface area than on ground. We have also noticed local troughs of the film thickness most likely due to manufacturing imperfections of the fin.