EUROTHERM SEMINAR N. 63           


Genoa (Italy) - 6-8 September 1999


Single and Two-Phase Natural Circulation
 
 
   

ABOUT EUROTHERM

The EUROTHERM Committee was created in 1986 by country members of the European Community.
Its purpose is to organize and to coordinate scientific events such as seminars in the field of the thermal sciences.
The series of EUROTHERM Seminars has become a popular forum for high-level scientific and technical exchange of ideas in a wide range of specific topics relevant of the field of thermal sciences.
The primary aim is to stimulate discussion and connections between group of experts.
The President of EUROTHERM Committee is Dr. G.P. Celata of ENEA-Rome.
Information about future seminars is available from the secretary of the Committee, Prof. P. Tarantini, University of Modena, E-mail: paolo.tarantini@unimo.it
 
 

CHAIRPERSONS

Prof. Mario Misale
DIPTEM - University of  Genova
Via all'Opera Pia 15/A, 16145 Genova, Italy
tel. +390103532576    fax +39010311870
e-mail: misale@ditec.unige.it

Prof. F. Mayinger
Technische Universitat Munchen
Lehrstuhl A fur Thermodynamik
Boltzmannstrasse 15
85748 Garching GERMANY
tel. ..49-89-28916215   fax ..49-89-28916218
e-mail: may@thermo-a.mw.tu-muenchen.de
 
 

SCIENTIFIC COMMITTEE
 
Dr. N. Aksan PSI, Switzerland
Dr. J. L. Bastos IPEN/CNEN-SP, Brazil
Prof. A. E. Bergles Rensselaer Polytechnic Institute, U.S.A.
Prof. M. Cumo University of Roma, Italy
Prof. G. Cammarata University of Catania, Italy
Prof. F. D'Auria University of Pisa, Italy
Prof. M. Di Marzo University of Maryland, U.S.A.
Dr. R. B. Duffey AECL, Canada
Prof. D. Feretic University of Zagreb, Croatia
Dr. J. C. Ferreri ENRN, Argentina
Ms. G. Geffraye CENG, France
Prof. M. Giot Université Catholique de Louvain, Belgium
Prof. G. Guglielmini University of Genova, Italy
Prof. E. Hicken Forschungzentrum Julich, Germany
Prof. S. Kakaç University of Miami, U.S.A.
Prof. H. Kalli University of Lappeenranta, Finland
Prof. Y. Kukita University of Nagoya, Japan
Prof. B. Mavko Inst. "J. Stefan", Slovenia
Prof. D. Mewes University of Hannover, Germany
Dr. J. C. Micaelli IPSN/DRS/SEMAR, France
Dr. B. Nigmatulin Elektrogorsk, Russia
Prof. C. Pisoni University of Genoa, Italy
Prof. A. C. M. Sousa University of New Brunswick, Canada
Dr. A. Strupczewsky IAEA, Austria
Dr. V. Teschendorf GRS, Germany
Dr. J. Tuunanen VTT Energy, Finland
Dr. T. Van der Hagen University of Delft, The Netherlands
Prof. G. Verdů University of Valencia, Spain
Dr. P. K. Vijayan Bhabha Atomic Research Center, India
 
 

LOCAL ORGANIZING COMMITTEE

Prof. E. Nannei
Prof. G. Tanda
Dr. S. Amadio
Dr. F. Devia
Dr. M. Frogheri
Dr. P. Ricciardi
Mr. G. Derlin
Mr. R. Martini 
  
 

The Organizing Committee wishes to thank:
University of Genoa
Regione Liguria
Consiglio Nazionale delle Ricerche
ELBOMEC
Azienda di Promozione Turistica di Genova


Final PROGRAM 

Monday 6
 
9.10
9.30
Welcome address
9.30
10.30
Invited Lecture Dr. Vijayan "Experimental observations on the general trends of the steady state and stability behaviour of single-phase natural circulation loops", Chairman Prof. E. Nannei
10.30
11.00
Coffee-Break
11.00
12.40
Session B (paper # 1-4), Chairman Dr. M. Furuya
13.00
14.30
Lunch
14.30
16.10
Session A (paper #1-4), Chairman Dr. H. Paillčre
16.10
16.40
Coffee-Break
16.40
17.55
Session A (paper #5-7), Chairman Dr. E. Krepper
 

Tuesday 7
 
9.00
10.00
Invited Lecture Dr. Ferreri "Single-phase natural circulation in simple circuits reflections on its numerical simulation", Chairman Prof. M. Misale
10.00
10.30
Coffee-Break
10.30
13.00
Session D (paper #1-6), Chairman Dr. K. Umminger
13.00
14.30
Lunch
14.30
16.10
Session D (paper #7-10), Chairman Dr. G.R. Dimmick
16.10
16.40
Coffee-Break
16.40
17.55
Session B (paper # 5-7), Chairman Dr. R. Pochard
20.00
  Social Dinner (Jolly Hotel Plaza)
 

Wednesday 8
 
9.00
10.15
Session C (paper #1-3), Chairman Prof. G. Guglielmini
10.10
10.45
Coffee-Break
10.45
12.25
Session C (paper #4-7), Chairman Prof. J.C. Passos
12.30
14.00
Lunch
14.00
15.40
Session D (paper #11-14), Chairman Prof. F. D'Auria
15.40
16.10
Coffee-Break
16.10
17.50
Session D (paper #15-19), Chairman Dr. W.J.M. De Kruijf
17.50
  Closure
 

Only overhead projection for transparencies will be provided at the technical sessions.

The time for the presentation will be 20 minutes plus 5 minutes for discussion (please avoid to exceed the time presentation because the Seminar Program is very busy).
 
 

SESSION A - CONVECTION IN CAVITIES


A1 - Natural convection in cavities containing internal sources
Barozzi, G.S., and Corticelli, M.A.
DSI - University of Modena and Reggio Emila - Italy

A2 - Experimental and numerical investigation of one and two phase natural convection in storage tanks
Aszódi, A., (°),Krepper, E., (°°),Prasser, H.-M. (°°)
(°) University of Budapest, Hungary, (°°) Reserch Center Rossendorf, Institute of Safety Research, Germany

A3 - Natural convection in a vertical rectangular enclosure with localized heating and cooling zones
Ishihara, I., (°), Matsumoto, R., (°), and Senoo, A., (°°)
(°) University of Kansai, Japan, (°°) Hasegawa Refrigeration Ltd., Japan

A4 - Numerical analysis of a symmetrically heated vertical channel with obstruction
Cammarata, G., (°), Fichera (°), Fischetti, C., (°) and Desrayaud, G., (°°)
(°) University of Catania, Italy, (°°) INSSET, Université de Picardie Jules Verne, France

A5 - Comparison of low Mach number models for natural convection problems
Paillčre, H., Viozat, C., Kumbaro, A., Toumi, I.
CEA Nuclear Reactor Division, France

A6 - Evolution of optimized and organized finite-size systems with particular reference to Rayleigh-Benard convection
Bisio, G., (°), Rubatto, G., (°), and Bisio, A., (°°)
(°) Ditec, University of Genoa, Italy , (°°) Botanic Institute, University of Genoa , Italy

A7 - Experimental heat transfer from a vertical plate within a naturally ventilated cabinet
Tanda, G., Misale, M., and Devia, F.
Ditec, University of Genoa, Italy
 

SESSION B - NATURAL CIRCULATION IN LOOPS


B1 - An assessment of pressure drop and void fraction correlations with data from two-phase natural circulation loops
Vijayan, P.K., Patil, A.P., Pilkhwal, D.S., Saha, D., and Venkat Raj, V.
Bhabha Atomic Research Centre Reactor Design & Development Group, India

B2 - Experiments in natural circulation: influence of scale factor on the stability behavior
Misale, M., (°), Frogheri, M., (°), and DAuria, F. (°°)
(°) Ditec, University of Genoa, Italy, (°°) DCMN, University of Pisa, Italy

B3 - Analysis of flow instabilities at the natural circulation loop DANTON with regard to nonlinear effects
Schuster, C., Ellinger, A., and Knorr, J.
Technische Universität Dresden, Germany

B4 - Adiabatic natural circulation in a closed loop
S. Srinivasarao, S., Reddeppa, P., and Kannan, N.I.
Dept. of Mechanical Engineering, Indian Institute of Technology, India

B5 - Simulation of a buoyancy influenced forced fluid flow using a finite volume and a finite element code
Krepper,E., Willschuetz, H.-G., and Weiss, F.-P.
Research Center Rossendorf, Institute of Safety Research, Germany

B6 - Inlet throttling effect on the boiling two-phase flow stability in a natural circulation loop with a chimney
Furuya, M., Inada, F., and Yasuo, A.
Central Research Institute of Electric Power Industry - Japan

B7 - Theoretic study and experimental verification of thermal field in a passive conditioning system for electronic components
Elias, G., (°), Fantini, L. (°), Ferrari, E., (°), Sala, R., (°°)
(°) University of Milan, Italy, (°°) Ditec, University of Genoa, Italy


SESSION C - BOILING: FUNDAMENTALS AND APPLICATIONS


C1 - Boiling driven mixed convection in a L-shaped slab geometry
Janssens-Maehout, G., Daubner, M., Knebel, J.U., and Müller, U.
Forschungszentrum Karlsruhe - Technik und Umwelt - Institut für Angewandte Thermo-und Fluiddynamik (IATF), Germany.

C2 - Analysis of pool boiling within smooth or grooved tubes
Passos; J. C., and Reinaldo, R.F.
Universidade Federal de Santa Catarina Departamento de Engenharia Mecânica LABSOLAR-NCTS, Brazil

C3 - The role of enhanced coated surface in pool boiling CHF in FC-72
Golobic, I., (°), Ferjancic, K. (°°)
(°) University of Ljubljana, Slovenia, (°°) Petrol d.d., Ljubljana, Slovenia

C4 - Analysis of the heat dissipation enhancement with finned surfaces in pool boiling of dielectric fluid
Fantozzi, F., Franco, A., Latrofa, E.M.
University of Pisa, Italy

C5 - Thermal control of electronic components by two-phase thermosyphon loops
Polasek, F., (°) and Gavotti, N., (°°)
(°) Energy Services , Czech Republic , (°°) Elbomec - Italy

C6 - Heat transfer in horizontal tubes during two phase natural circulation with presence of non condensing gas
Alt, S., Lischke, W.
University for Applied Sciences Zittau/Goerlitz, Germany

C7 - Degassing in water of solved gases in thin piping during fast pressure drops
Fleischer, S., and Hampel, R.
Institute for Process technique, Process Automation and Measuring Technique University for Applied Sciences Zittau/Görlitz, Germany
 

SESSION D - NATURAL CIRCULATION IN INDUSTRIAL AND POWER PLANTS
 

D1 - Analysis of a feed and bleed procedure sensitivity study, performed with the SIPACT simulator, on a 900 MWe NPP
Pochard, R., Jedrzejewski, F., Mazauric, X., and Carteron, P. Y.
CEA-INSTN-UERTI, France

D2 - Post-test calculation of the Pactel-experiments SIR-20 and SIR-21 (stepped inventory reduction in low primary pressure) with Athlet code
Vandreier, B., and Lischke, W.
University for Applied Sciences Zittau/Görlitz (FH), Germany

D3 - Investigation of the transition from forced to natural convection in the research reactor Munich II
Skreba, S., Adamek, J., and Unger, H.
NES, Ruhr-University Bochum, Germany

D4 - Natural convection and circulation studies for advanced CANDU reactor concepts
Dimmick, G.R., Khartabil, H. F., Duffey, R. B., and Chatoorgoon, V.
AECL, Canada

D5 - An advanced natural-circulation U-tube steam generator model and code utsg-3
Hoeld, A.
Gesellschaft für Anlagen- und Reaktorsicherheit (GRS), Germany

D6 - Determination of containment closure time following a loss-of-shutdown-cooling event
Seul, K. W., Bang, Y. S., and Kim, H.J.
Advanced Reactors Department Korea Institute of Nuclear Safety - Korea

D7 - Restart of natural circulation in a PWR-PKL test results and S-Relap5 calculations
Umminger, K., Mandl, R., Wegner, R., and Perst, M.
Siemens, Power generation (KWU), Germany

D8 - Effects of ship inclination and ship motions on natural circulation of deep sea research reactor DRX
Ishida, T., and Yoritsune, T.
Dep. of Nuclear Energy System, JAERI - Japan

D9 - Natural circulation characteristics of a marine reactor in rolling motion, and heat transfer in the core
Murata, H., Sawada, K., Kobayashi, M.
Nuclear Technology Division Ship Research Institute, Japan

D10 - Multidimensional modelling of bubbly flows for nuclear reactor passive decay-heat removal
Laurien, E., Becker, S., Saptoadi, D., and Giese, T.
IKE, University of Stuttgart, Germany

D11 - Loss of natural circulation in VVER-440 type reactor simulated by Relap5/Mod3.2.2
Perneczky, L.
KFKI - Atomic Energy Research Institute, Hungary

D12 - Analytical modeling of flashing induced instabilities in a natural circulation cooled boiling water reactor
Van Bragt, D.D.B., De Kruijf, W.J.M., Van der Hagen, T.H.J.J., and Van Dam, H.
University of Delft, The Netherlands

D13 - Natural circulation flow behavior at reduced inventory in a VVER geometry
Puustinen, M.
VTT Energy, Finland

D14 - CIRCUS; a natural circulation two-phase flow facility
De Kruijf, W.J.M., Van der Hagen, T.H.J.J., and. Mudde, R.F
University of Delft, The Netherlands

D15 - Parameter sensitivity in single-phase natural circulation via automatic differentiation of Fortran code
Ambrosini, W, (°), and Ferreri, J.C. (°°)
(°) University of Pisa, Italy, (°°) ARN, Argentina

D16 - Use of a natural circulation flow map for assessing PWR performance
D'Auria, F., (°) and Frogheri, M., (°°)
(°)DCMN, University of Pisa, Italy, (°°)Ditec, University of Genoa, Italy

D17 - Study on the stability behavior of a natural circulation pressure tube type Boiling Water Reactor Nayak, A.K., (°), Vijayan, P.K., (°), Verkat Raj, V., (°) and Aritomi, M. (°°)
(°) Bhabha Atomic Research Centre Reactor Design & Development Group, (°°), Tokyo Institute of technology, Japan

D18 - EP1000 long term core cooling
Saiu, G., and Barucca, L.
Ansaldo Nuclear Division, Genoa, Italy

D19 - A study on the behavior of Debris around a sump of safety cooling system
Bae, J.-H., and Park, M.-H.
Korea Power Engineering Company, Korea 
   

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Last update: August 26th1999.
 

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