42nd European TwoPhase Flow Group
Meeting
Università degli Studi di Genova
Villa Giustiniani Cambiaso
Genoa, Italy, 23-25 June, 2004
Conference program
Wednesday, June 23rd
8.30
Registration
9.00
Opening of the meeting
9.15
Invited Lecture
Prof. Akimi Serizawa, University of Kyoto
Pseudo laminar characteristic of bubbly flow with micro bubbles and practical
applications of micro bubbles
Chairman:
Prof. G.Guglielmini
10.00
Coffee break
10.30
UIT Conference: Poster Session on “Two Phase Flow and Heat Transfer
Session A: Bubbly flows
Chairman: Prof. Akimi Serizawa
11.30
G.P. Celata, F. D'Annibale, P. Di Marco, W. Grassi, G. Memoli, A. Tomiyama
BUBBLE RISING VELOCITY IN ONE AND TWO-COMPONENT SYSTEMS
11.55
G. P. Celata, M. Cumo, F. D’Annibale, P. Di Marco, A. Tomiyama, C. Zovini
EFFECT OF GAS INJECTION MODE AND PURITY OF LIQUID ON BUBBLE
RISING IN TWO-COMPONENT SYSTEMS
12.20
G. P. Celata, M. Cumo, F. D’Annibale, A. Tomiyama
THE WAKE EFFECT ON THE RISING VELOCITY OF SMALL BUBBLES
13.00
Lunch – Villa Spinola
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Session B: Flow regimes
Chairman: Prof. Neima Brauner
14.30
Y. Taitel, D. Barnea
TWO PHASE FLOW IN PARALLEL PIPES WITH COMMON INLET MANIFOLD
14.55
B.J.Azzopardi, A. Belghazi, M. Fossa, P. Guglielmini
FEATURES OF TWO-PHASE GAS/LIQUID FLOW AT A COMBINING T
JUNCTION – HOLD UP PROFILES AROUND THE JUNCTION AND UPSTREAM
TRAVELLING WAVES
15.20
B. Pulvirenti, G. Sotgia, P. Tartarini
EXPERIMENTAL AND NUMERICAL ANALYSIS OF FLOW PATTERN
TRANSITIONS AND INTERFACE FORCES IN OIL-WATER MIXTURES
15.45
L. Shemer, A. Gulitski, D. Barnea
VELOCITY FIELD IN THE TAYLOR BUBBLE WAKE: MEASUREMENTS IN
PIPES OF VARIOUS DIAMETERS
16.10
Coffee break
Session C: Flow regimes
Chairman: Prof. Barry J. Azzopardi
16.40
E. Trostinetsky, L. Shemer D. Barnea
INTERFACIAL SHAPE AND INTERFACIAL SHEAR STRESS IN DOWNWARD
STRATIFIED TURBULENT GAS-LIQUID PIPE FLOW
17.05
M. Fossa, G. Guglielmini, A. Marchitto
VOID FRACTION STRUCTURE CLOSE TO ORIFICE CONTRACTIONS DURING
HORIZONTAL INTERMITTENT FLOWS
17.30
S. Arosio, M. Guilizzoni
LOCAL, AREA-AVERAGED AND SECTION-AVERAGED ANALYSIS OF TWOPHASE FLOWS IN HORIZONTAL DUCTS WITH SUDDEN SECTION
EXPANSIONS
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Thursday, June 24th
9.00
Invited Lecture:
Prof. Barry J. Azzopardi, University of Nottingham
Bubbles, Drops and Waves - differences or underlying commonality
Chairman: Prof. Yehuda Taitel
Session D: Modelling and numerical methods
Chairman: Prof. Yehuda Taitel
9.45
N. Brauner, A. Ullmann
CLOSURE RELATIONS FOR TWO-FLUID MODELS FOR TWO-PHASE
STRATIFIED SMOOTH AND STRATFIED WAVY FLOWS
10.10
I. Eames, V. Roig, J.C.R. Hunt, S.E. Belcher
DISAPPEARING WAKES IN COMPLEX FLOWS AND INVISCID CONCEPTS
FOR MULTIPHASE FLOWS
10.35
Coffee break
Session E: Modelling and numerical methods
Chairman: Prof. Thomas Schulenberg
11.05
D. Lucas, M. Prasser
VALIDATION OF MODELS FOR BUBBLE FORCES.
11.30
J. Dávila, U. Sánchez
TRAPPING OF HEAVY PARTICLES BY 3-D LINE VORTICES
11.55
12.20
13.00
J. Kjolaas
HYDRATE PLUG DISSOCIATION IN TWO-PHASE FLOW PIPELINES
K. Karkoszka, H. Anglart
CFD MODELING OF A DIRECT-CONTACT CONDENSATION IN PRESENCE OF
NON – CONDENSABLE GASES ON A LIQUID FILM SURFACE
Lunch – Villa Giustiniani Cambiaso
Session F: Boiling & Condensation
Chairman: Prof. Peter Stephan
14.30
BAŠIČ Sanib
HYDRODYNAMIC CHARACTERISTICS OF A BUBBLE BOILING REGIME
WITH ARTIFICIALLY PRODUCED NUCLEATION SITES
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14.55
P. Persson, S. Hedberg, H. Anglart
EXPERIMENTAL INVESTIGATION OF POST-DRYOUT HEAT TRANSFER IN
AN ANNULUS WITH SPACERS
15.20
A. Muscio, G. Tambascia, P. Tartarini
THE PROBLEM OF THE CONTACT TEMPERATURE IN DROPLET-SOLID
HEAT TRANSFER: EXPERIMENTAL ANALYSIS.
15.45
H. Auracher
A MICROTHERMOCOUPLE PROBE TO STUDY THE TEMPERATURE FIELD IN
A TWO-PHASE BOILING LAYER
16.10
Coffee break
Session G: Boiling & Condensation
Chairman: Prof. Mario Misale
16.40
A. Cavallini, G. Censi, D. Del Col, L. Doretti, M. Matkovic, L. Rossetto, C. Zilio
CONDENSATION INSIDE A MULTI-PORT MINICHANNEL: EXPERIMENTAL
HEAT TRANSFER COEFFICIENTS.
17.05
G. Caruso , A. Naviglio, P. Spalvieri
HEAT TRANSFER COEFFICIENT EVALUATION OF CONDENSING STEAMAIR MIXTURES IN TUBES
17.30
L. Colombo, A. Muzzio, A. Niro
HEAT TRANSFER AND PRESSURE DROP DURING CONDENSATION OF
R134A INSIDE TWO MICRO-FIN TUBES OF NEW DESIGN
17.55
A.K. Nayak, A. Stepanyan, B.R. Sehgal
QUENCHING
BEHAVIOUR
OF
A
VOLUMETRICALLY
HEATED
PARTICULATE BED WITH NON-CONDENSABLE GAS ADDITION FROM
BOTTOM
20.30
Dinner – Terrazze di Palazzo Ducale
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Friday, June 25th
9.00
Invited Lecture
Prof. Peter Stephan, Darmstadt University of Technology
Micro-Scale Heat Transfer Validation by Means of High
Temperature Measurement with Thermochromic Liquid crystals
Resolution
Chairman: Dr. Gian Piero Celata
Session H: Measurements
Chairman: Dr. Gian Piero Celata
9.45
D. Mewes, L. Volpe
VISUALIZATION OF CONCENTRATION FIELD BY TOMOGRAPHIC TWOWAVELENGHTS PHOTOMETRY
10.10
E. Macerata, G. Janssens-Maenhout
SURFACE TENSION OF NITRIC ACID SOLUTIONS BY MEANS OF CONTACT
ANGLE MEASUREMENTS
10.35
Coffee break
Session I: Engineering applications
Chairman: Prof. Hein Auracher
10.55
D. Moncalvo., L. Friedel
PREDICTIVE EXACTNESS OF SAFETY VALVE TWO-PHASE MASS FLOW
CAPACITY IN CASA OF TWO-COMPONENT AIR/WATER, RESP., VISCOUS
LIQUID FLOW DUTY
11.20
H. Derlien, L. Friedel
ACCURACY OF SAFETY VALVE TWO-PHASE MASS FLOW CAPACITY
SIZING IN CASE OF SINGLE-COMPONENT STEAM/WATER, RESP.
REFRIGERANT R134A FLOW DUTY
11.45
E. Laurien, T. Schulenberg
TWO-PHASE FLOW PROBLEMS OF SUPERCRITICAL WATER COOLED
REACTOR SYSTEMS
12.10
O. Herbst, H. Schmidt, W. Brettschuh, E. Bielor
TESTS TO PROVE THE FUNCTIONING OF THE SWR 1000 EXTERIOR
COOLING CONCEPT
13.00
Lunch
15.30
20.30
Boat excursion (Portofino Area)
Dinner – Camogli
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