Preliminary Program

CONVECTIVE FLOW
AND
POOL BOILING II

18-23 May 1997
Irsee, Germany

Conference Chair:
Professor Franz Mayinger
T.U. Munich, Germany

Conference Co-Chairs:
Professor Avram Bar-Cohen, University of Minnesota, USA
Professor John C. Chen, Lehigh University, USA
Professor Gian Piero Celata, ENEA Rome, Italy
Professor Yasunobu Fujita, Kyushu University, Japan

Engineering Foundation Conferences
345 E. 47th Street New York, NY 10017
212-705-7836; Fax: 212-705-7441; E-mail: engfnd@aol.com
World Wide Web: http://www.engfnd.org

SUNDAY, 18 May 1997

3:00 pm - 9:00 pm Registration (Entrance Lobby of Swabian Conference Center)

6:00 pm - 7:30 pm Dinner

7:30 pm - 8:00 pm Welcome (Conference Room)
Franz Mayinger, Conference Chair
Frank Schmidt, Engineering Foundation
R. Jehl, Swabian Conference Center

8:00 pm - 9:00 pm SESSION I
Moderator: Franz Mayinger

Keynote Lecture I
Pool boiling heat transfer from horizontal tubes to mixtures
D. Gorenflo
Universität-GH Paderborn, Germany

9:00 pm - 11:00 pm Opening Reception (Bierstube)

MONDAY, 19 May 1997

7:00 am - 8:15 am Breakfast

8:15 am - 9:15 am Keynote Lecture II
Enhancement of phase-change heat transfer
A.E. Bergles, Rensselear Polytechnical Institute, Troy, NY

9:15 am - 11:50 am SESSION II: Pool Boiling
Chair: TBA

Paper II-1
Nucleate pool boiling heat transfer from a horizontal heated cylinder to saturated liquids with radial flow agitation
S.C. Gupta, S.K. Agarwal and B.S. Varshney
University of Roorkee, Roorkee, India

Paper II-2
Vapor bubble growth under pool and convective boiling
D. Gentile
Université de Versailles, Saint-Cyr-l'Ecole, France

10:05 am - 10:35 am Coffee Break

Paper II-3
Investigating the effect of heating method on pool boiling heat transfer
S.G. Kandlikar and M. Lombardo
Rochester Institute of Technology, Rochester, NY, USA

Paper II-4
Pool boiling of propane and pentane on a bundle of low-finned tubes
B. Thonon, R. Roser and P. Mercier
DTP/GRETh, CEA-Grenoble, France

Paper II-5
The role of the mass diffusion effect in pool boiling of binary mixtures
M.-H. Liu, Y.-M. Yang and J.-R. Maa
National Cheng Kung University, Tainan, Taiwan, R.O. China

11:50 am - 1:00 pm Lunch

1:00 pm - 2:40 pm SESSION III: Nucleation
Chair: TBA

Paper III-1
Experimental study of interactions between spatially controlled nucleation sites on a thin flat plate in pool boiling
H. Gjerkes, I. Golobic and B. Gaspersic
University of Ljubljana, Ljubljana, Slovenia

Paper III-2
Heat transfer and size distribution of active nucleation sites in boiling of hydrocarbons
A. Luke, and D. Gorenflo
Universität-GH Paderborn, Paderborn, Germany

Paper III-3
In search of secondary nucleation
G.E. Thorncroft and F. Klausner
University of Florida, Gainesville, Fl, USA

Paper III-4
Fundamental study regarding the activation of nucleation sites
* F.D. Stoian, ** K. Takano and S. Nishio
* 'Politehnica' University of Timisoara, Timisoara, Romania
** University of Tokyo, Tokyo, Japan

2:40 pm - 3:00 pm Coffee Break

3:00 pm - 4:40 pm SESSION IV: Subcooled boiling
Chair: TBA

Paper IV-1
Natural alternations in subcooled pool boiling heat transfer
A. Bode, K. Kling, J.J. Schröder and M. Viertmann
Universität Hannover, Hannover, Germany

Paper IV-2
Conditions for so-called "small channel effects" in subcooled boiling flows
A.E. Ruggles
University of Tennessee, Knoxville, TN, USA

Paper IV-3
Further developments in the flow boiling map for subcooled flow boiling
S.G. Kandlikar and M.P. Marlin
Rochester Institute of Technology, Rochester, NY, USA

Paper IV-4
Prediction of scale formation during subcooled flow boiling
* S.H. Najibi, H. Müller-Steinhagen, and ** M. Jamialahmadi
* University of Surrey, United Kingdom
** National Iranian Oil Co, Ahwaz, Iran

4:40 pm - 6:30 pm Free Time (Brewery Tour)

6:30 pm - 8:00 pm Dinner

8:00 pm - 9:00 pm Organ recital at the Baroque church of the monastery

9:00 pm - 11:00 pm Social hour

TUESDAY, 20 May 1997

7:00 am - 8:15 am Breakfast

8:15 am - 9:15 am Keynote Lecture III
The triggering of molten metal-water explosions D. Hughes
University of Surrey, Guilford, United Kingdom

9:15 am - 12:00 noon SESSION V: Transients in boiling
Chair: TBA

Paper V-1
Theoretical studies on transient pool boiling based on microlayer model
* Y. Zhao, ** T. Masuoka and T. Tsuruta
* Kyushu University, Fukuaoka, Japan
** Kyushu Institute of Technology, Kitakyushu, Japan

Paper V-2
Boiling delay and phase transition of droplets impacting on a hot wall
N. Wruck and U. Renz
RWTH Aachen, Aachen, Germany

Paper V-3
Transient heat transfer in liquid helium at impulse thermal load
U.A. Segeyev
Joint Institute for Nuclear Research, Dubna, Russia

10:30 am - 11:00 am Coffee Break

Paper V-4
Identification of liquid-vapor fluctuations between nucleate and film boiling in natural convection
* R. Holh, H. Auracher ** J. Blum and W. Marquardt
* TU Berlin, Berlin, Germany
** RWTH Aachen, Aachen, Germany

Paper V-5
Theory and experimental validation of boiling systems stability
* J. Blum, W. Marquardt, ** R. Hohl and H. Auracher
* RWTH Aachen, Aachen, Germany
** Technical University Berlin, Berlin, Germany

Paper V-6
Two-phase flow instabilities in horizontal and vertical in-tube flow boiling systems
S. Kakac
University of Miami, Florida, USA

12:00 - 1:10 pm Lunch

1:10 pm - 2:10 pm Keynote Lecture IV
Modeling of critical heat flux in subcooled flow boiling
G.P. Celata
ENEA Energy Department, Rome, Italy

2:10 pm - 4:15 pm SESSION VI: Forced convective boiling heat transfer
Chair: TBA

Paper VI-1
Flow boiling of pentane - some special trends
* T. Kandlbinder, G.F. Hewitt, ** V.V. Wadekar
* Imperial College, London, United Kingdom
** AEA Technology, Harwell, United Kingdom

Paper VI-2
Effect of surface characteristics on flow boiling heat transfer
S.G. Kandlikar and P.H. Spiesman
Rochester Institute of Technology, Rochester, NY, USA

Paper VI-3
Forced convection boiling heat transfer from electronic chips in a rectangular channel
C.P. Tso, K.W. Tou and G.P. Xu
Nanyang Technological University, Singapure

Paper VI-4
Convective flow boiling in horizontal eccentric annuli
P. Geskes
DLR Institute for Technical Thermodynamics, Stuttgart, Germany

Paper VI-5
Investigating bubble characteristics and convective effects on flow boiling heat transfer in binary mixtures
S.G. Kandlikar and T. Raykoff
Rochester Institute of Technology, Rochester, NY, USA

4:15 pm - 4:45 pm Coffee Break

4:45 pm - 6:50 pm SESSION VII: Bubble formation and bubble dynamics
Chair: TBA

Paper VII-1
Visual observations of vapor bubble dynamics in vertical flow boiling
G.E. Thorncroft and J.F. Klausner
University of Florida, Gainesville, FL, USA

Paper VII-2
Bubble shapes and forces in flow boiling
D.M. Qiu and C.W.M. van der Geld
Eindhoven University of Technology, Eindhoven, Netherlands

Paper VII-3
Flashing heat transfer rate and flash chamber non-equilibrium factor
H.E.S. Fath
Alexandria University, Alexandria, Egypt

Paper VII-4
Formation of the gas microporosity in castings - a boiling approach
A.V. Kuznetsov
Technical University Vienna, Vienna, Austria

Paper VII-5
Propagation of boiling fronts in superheated liquids
J. Fauser and J. Mitrovic
Universität Stuttgart, Stuttgart, Germany

6:50 pm - 8:20 pm Dinner

8:20 pm - 10:30 pm Social hour

WEDNESDAY, 21 May 1997

7:00 am - 8:15 am Breakfast

8:15 am - 9:15 am Keynote Lecture V
Vaporisors and reboilers - Industrial application and research
V.V. Wadekar
AEA Technology, Harwell, United Kingdom

9:15 am - 11:50 am SESSION VIII: Two-phase flow characteristics and flow regimes
Chair: TBA

Paper VIII-1
Prediction of two-phase flow patterns for evaporation of refrigerant R407C inside horizontal tubes
O. Zürcher, R. Thome and D. Favrat
LENI, EPFL, Lausanne, Switzerland

Paper VIII-2
Numerical simulation of non-equilibrium hot-water two-phase flows
M. Wein and J. Huhn
Technical University Dresden, Dresden, Germany

10:05 am - 10:35 am Coffee Break

Paper VIII-3
Interaction of vapor-liquid two-phase flow and heat transfer in a horizontal tube
M. Wettermann and D. Steiner
Universität Karlsruhe, Germany

Paper VIII-4
Modeling of two phase stratified and annular flow in heated horizontal tubes
O. Goebel
DLR Institute for Technical Thermodynamics, Stuttgart, Germany

Paper VIII-5
Flow regime identification using parameters derived from Chaos theory
H. Skok and E. Hahne
Universität Stuttgart, Stuttgart, Germany

11:50 am - 1:00 pm Lunch

1:00 pm - 4:15 pm SESSION IX: Mathematical simulation of boiling
Chair: TBA

Paper IX-1
Mathematical simulation model of boiling-modes and chaos
K. Tajima and M. Shoji
University of Tokyo, Tokyo, Japan

Paper IX-2
Numerical simulation of boiling heat transfer
H. Ying, S. Maruyama and M. Shoji
University of Tokyo, Tokyo, Japan

Paper IX-3
Computer model of nucleate boiling
A.P. Solodov
Moscow Power Engineering Institute, Moscow, Russia

Paper IX-4
An empirical equation for nucleate pool boiling heat transfer
A.R. Khan
Kuwait University, Kuwait

2:40 pm - 3:00 pm Coffee Break

Paper IX-5
Numerical study of nucleation site interaction on a thin plate
I. Golobic and E. Pavlovic
University of Ljubljana, Ljubljan, Slovenia

Paper IX-6
Evaporation in miocrofin tubes: a local prediction model
R. Thome, N. Kattan, and D. Favrat
LENY, EPFL, Lausanne, Switzerland

Paper IX-7
Mechanistic modeling of CHF in forced convection boiling
M.Z. Podowski, A. Alajbegovic, N. Kurul, D. Drew and R.T. Lahey, Jr.i
Rensselear Polytechnical Institute, Troy, NY, USA

4:15 pm - 6:30 pm Ad hoc sessions and/or free time

6:30 pm - 8:00 pm Dinner

8:00 pm Free time

THURSDAY, 22 May 1997

7:00 am - 8:00 am Breakfast

8:00 am - 2:00 pm Optional Sighseeing Tour: Boxed Lunch

2:20 pm - 6:00 pm SESSION X: Critical heat flux and post dryout heat transfer
Chair: TBA

Paper X-1
Statistical characteristics of parameters affecting pool boiling CHF
Y. Haramura, and H. Takeno
Kanagawa University, Yokohama, Japan

Paper X-2
Visual investigation of high heat flux burnout in subcooled flow boiling of water
C.P. Celata, M. Cumo, A. Mariani, G. Zummo and D. Gallo
ENEA Energy Department, Rome, Italy

Paper X-3
CHF in forced convective subcooled boiling with a plane jet
M. Monde, X. Wang, and Y. Mitusake
Saga University, Honjo Saga, Japan

Paper X-4
Observation of boiling structures near CHF
* S. Nishio, T. Gotoh and ** N. Nagai
* University of Tokyo, Tokyo, Japan
** Fukui University, Fukui, Japan

4:00 pm - 4:20 pm Coffee Break

Paper X-5
Experimental study on dryout in smooth and rifled tubes
F. Dugat, C. Marvillet and G. Berthoud
GRETh, CEA-Grenoble, Grenoble, France

Paper X-6
Critical heat flux in tight 7-rod bundles
X. Cheng, F.J. Erbacher, U. Müller
Research Center Karlsruhe, Karlsruhe, Germany

Paper X-7
Synthetic view of the CHF mechanism in subcooled flow boiling based on the recent mechanistic models
Y. Katto
Nihon University, Tokyo, Japan

Paper X-8
Experimental study on upstream CHF in flow boiling
S. Yokoya, M. Watanabe and M. Shoji
University of Tokyo, Tokyo, Japan

6:00 pm - 7:30 pm Dinner

7:30 pm - 10:00 pm SESSION XI: Special effects and phenomena in boiling
Chair: TBA

Paper XI-1
An experimental study on dynamic behavior of vapor bubbles in an electric field
* Y.C. Kweon, ** M.H. Kim and I.S. Kang
* Nuclear Power Research Laboratory, Korea
** Pohang University of Science and Technology, Pohang, Korea

Paper XI-2
Falling film evaporation of single component liquids
A. Alhusseini, K. Tuzla, and J.C. Chen
Lehigh University, Bethlehem, PA, USA

Paper XI-3
The influence of surface treatment to nucleate pool boiling heat transfer in evaporative coolers
M. Lovland
SINTEF Energy, Trondheim, Norway

Paper XI-4
Enhancement of the pool boiling CHF using dielectric liquid mixtures
A.A. Watwe and A. Bar-Cohen
University of Minnesota, Minneapolis, IL, USA

Paper XI-5
Mechanisms of reducing pool boiling hysteresis induced by variation of start-up conditiones
H.-S. Liang and W.-J. Yang
University of Michigan, Ann Arbor, MI, USA

Paper XI-6
Combined effect of electric field, subcooling and mircogravity on critical heat flux on a wire in pool boiling
P.Di Marco and W. Grassi
Universita di Pisa, Pisa, Italy

FRIDAY, 23 May 1997

7:00 am - 8:15 am Breakfast

8:15 am - 11:10 am SESSION XII: Heat exchanger and industrial applications
Chair: TBA

Paper XII-1
Performance characteristics of two-phase cold plate heat exchangers containing mini-channels and porous metallic foam
* C.N. Ammermanm, S.M. You and ** D.C. Price
* University of Texas, Arlington, TX
** Texas Instruments, Plano, TX, USA

Paper XII-2
Development of an experiment-based design tool for future solar fields and design aspects of a recirculation field
* O. Herbst, W. Kastner, W. Köhler and ** H. Schmidt
* Power Generation Group (KWU), Erlangen, Germany
** Siemens AG, Erlangen, Germany

Paper XII-3
Maximum allowable heat flux for a submerged horizontal tube bundle
D.M. McEligot
Idaho National Engineering Laboratory/Lockheed Martin Idaho Tech.
Idaho Falls, ID, USA

9:00 am - 9:15 am Coffee Break

Paper XII-4
Cross-flow and pool boiling of ethanol-water mixtures on the outside of horizontal GEW A-tubes
* H. Auracher, ** W. Kramer, and C. Marvillet
* Technical University Berlin, Berlin, Germany
** GRETh, CEA-Grenoble, Grenobel, France

Paper XII-5
Nucleate and convective boiling in plate fin heat exchangers
A. Feldman, and C. Marvillet
GRETh, CEA-Grenobel, Grenoble, France

Paper XII-6
Compact evaporators
K. Cornwell and P.A. Kew
Heriot-Watt University, Edinburg, United Kingdom

Paper XII-7
Heat Transfer and flow pattern in horizontal tube bundles under pool and flow boiling conditions
Y. Fujita, Q. Bai and S. Hidaka
Kyushu University, Fukuoka, Japan

11:40 am - 1:00 pm SUMMARY AND CLOSING
Moderator: TBA

1:00 pm Lunch and Departure

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