International Scientific Colloquium

May 28-29, 1999

 

Organizers:
Sponsors:

Laboratory for Mathematical Modelling of Environmental and Technological Processes, University of Latvia
LZP
Latvian Council of Science

Institute for Electroheat, University of Hannover

ABB Industrietechnik AG
 

"Center for Process Analysis and Research", Ltd.

 

Programm Comitee:

  • Prof. Alfred Mühlbauer   (University of Hannover, Germany)
  • Prof. Andrejs Cçbers   (University of Latvia)
  • Prof. Juris Miíelsons   (Council of Riga)

 

Organising Comitee:

  • Dr. Andris Jakoviès   (University of Latvia)
  • Dr. Egbert Baake   (University of Hannover, Germany)
  • Dr. Uldis Bethers   (University of Latvia)
  • Anita Brûvere   (secretary, University of Latvia)

 

Photos of Colloquium:

Place of colloquium - University of Latvia
Welcome greeting by J. Zakis - rector of University Latvia
One of guests - ambassador of Germany in Latvia
Reception
Room of oral talks
During the oral talk
Poster session
Participants of colloquium on stairs of University of Latvia

 

Proccedings of Colloquium:
 
ISBN 9984-572-38-2

241 pages
35 reports


 

Program of Colloquium:

May 28
Opening lecture
Mathematical Modelling - Development and Possibilities Prof. J.Mikelsons Latvia
Session 
Crystal Growth Processes

Chairman:
Prof. A.Mühlbauer

Segregation During Bridgman Crystal Growth in Space with an Axial Magnetic Field N. Ma
J.S. Walker
USA
Convective Cooling of Floating Zone Silicon Crystal During Growth T.L. Larsen
A. Lüdge
H. Riemann
L. Jensen
A. Nielsen
M.P. Sorensen
Denmark
Germany
Numerical Modelling of the Influence of Different Types of Magnetic Fields on Fluid Motion and Resistivity Profiles During FZ-Silicon Crystal Growth G. Raming
A. Muiznieks
A. Mühlbauer
Germany
3D Modelling of Magnetic, Temperature, Hydrodynamic and Dopant Concentration Fields During FZ Silicon Crystal Growth G. Ratnieks
A. Muiznieks
G. Raming
A. Mühlbauer
L. Buligins
Latvia
Germany
The Influence on the Liquid by a Combination of Two Different Types of Electromagnetic Fields as a New Method Used to Control the Heat/Mass Transfer in Metallic and Semiconductor Melts M. Abricka
Y. Gelfgat
J. Krumins
Latvia
Numerical Modelling of Melt Flow During Czochralski Silicon Crystal Growth J. Virbulis
T. Wetzel
A. Muiznieks
G. Raming
B. Rexer
E. Dornberger
W. von Ammon
A. Mühlbauer
Germany
The Use of High Frequency Rotating Magnetic Fields in Crystal Growth L. M. Witkowski
Ph. Marty
J.S. Walker
USA
Session 2
Heat and Mass Transfer Processes

Chairman:
Prof. A.Cebers

Liquid Metal Turbulent Flow Dynamics in a Cylindrical Container with Free Surface: Experiment and Numerical Analysis A. Bojarevics
V. Bojarevics
Y. Gelfgat
K. Pericleous
UK
Latvia
Influence of Furnace Arrangement on the Melt Flow and the Thermal Behaviour of the Melt in an Induction Furnace with Cold Crucible F. Bernier
M. Vogt
A. Mühlbauer
Germany
Hydro-Thermal Simulation of Neutron Spallation Source Mercury Target Model L. Buligins
I. Platnieks
Latvia
Optimization of MHD Processes in an Aluminum Reduction Cell J.E. Freibergs Latvia
Stability of Diffusion Fronts of Magnetic Particles in Hele-Shaw Cell Under Hydrodynamic Dispersion H. Rjabovs
A. Cebers
Latvia
Heat and Mass Transfer in the Turbulent Melt Flow of the Crucible Inductor Furnace
sters
E. Baake
A. Mühlbauer
B. Nacke
Germany
Poster Session

Chairmens:
Prof. A.Cebers,
Prof A.Mühlbauer,
Prof. J.Mikelsons

“Crystal Growth Processes” Convection in the GaAs Melt at the Czochralski Method K. Boettcher
W. Miller
U. Rehse
Germany
Some Aspects of Numerical Modelling of Turbulent Low-Re Melt Flow During CZ Silicon Single Crystal Growth A. Krauze
A. Muiznieks
Th. Wetzel
G. Raming
A. Mühlbauer
L. Buligins
J. Virbulis
Latvia
Germany
Simplified Model for Microscopic Instabilities of Crystallization Process During <111> FZ-Silicon Crystal Growth I. Madzhulis
A. Muiznieks
G. Raming
A. Mühlbauer
Latvia
Germany
“Heat and Mass Transfer Processes” Effects of DC Field-Enhanced Heat and Mass Transfer on NOx Formation in a Flame Flow M. Zake
M. Purmals
Latvia
Special Finite-Difference Approximations of the System of MHD Equations for Viscous Incompressible Fluid H. Kalis Latvia
Change of Conductivity of Fireproof Material by Metal Vapour in Presence of Temperature Gradient A. Jakovics
I. Madzhulis
V. Frishfelds
B. Nacke
Latvia
Germany
Acetylation of Solid Wood and Modelling of Acetic Anhydride Diffusion A. Morozovs
A. Aboltins
Latvia
„Technology for Environment Protection“ Combined Applications of Thermography, Heat Transfer Measurement and Heat Consumption Modelling in the Reconstruction of Buildings A. Jakovics
S. Gendelis
H. Trümmann
J. Virbulis

Latvia
Germany
Standardised Measurement of Heat Transfer Coefficient of Finished Building Structures in the Heat Chamber A. Jakovics
L. Shnidere
S. Gendelis
M. Krumins
Latvia
Determination of Tides in the Gulf of Riga and Baltic Sea M. Keruss
J. Sennikovs
Latvia
Modelling Littoral Drift along Latvian and German Coasts R. Grzhibovskis
U. Bethers
J. Sennikovs
Latvia
Model Calibration Using Recurrent Neural Networks O. Schleider Germany
The Comparison of the Efficiency of Enhanced Heat Exchange Surfaces V. Rifert
A. Gorin
Ukraine
„Electromagnetic Processes“ Application of FEM for Magnetic Force Calculation between Ferromagnetic Spheres S. Lacis
O. Volkova
G. Bossis
Latvia
France
Instability of Solid and Liquid Electroconductive Bodies Levitating in the Electromagnetic Field of High Frequency Y. Gelfgat
A. Mikelsons
A. Romancuks
Latvia
Nonlinear Effects in the Technologies of High Frequency Heating of Ferrous Strip V. Demidovitch
F. Tchmilenko
M. Zlobina
Russia
May 29
Session 3
Technology for Environment Protection

Chairman:
Prof. J.Mikelsons

Hydrological Studies in Latvia: a Challenge for Modeller U. Bethers Latvia
A Diffusion Model for Desorption of Hazardous Components from Solids B. Niemeyer
X. Luo
Germany
Automatic Remote Energy Monitoring of Operational Devices H. Trümmann
A. Mühlbauer
Germany
Temperature Oscillation Measurement Techniques for Thermal Diffusivity and Conductivity W. Czarnetzki
A. Roetzel
Germany
Session 4
Electromagnetic Processes

Chairman:
Prof. J.Mikelsons

New Development of High-Powered Channel Inductors for Melting Brass B. Nacke
K.-H. Idziok
A. Walther 
Germany
Thermal Deformation of the Strip During Transverse Flux Induction Heating A. Ruhnke
A. Mühlbauer
A. Nikanorov
V. Demidovitch 
Germany
Russia
Optimal Design of Inductors for Special Applications M. Battistetti
F. Dughiero
S. Lupi 
Italia
Closing Session
Awarding of the best posters Conclusion speeches
Software demonstrations in the Laboratory for Mathematical Modelling of Environmental and Technological Processes Z. Krievans
S. Gendelis
A. Jakovics
Latvia