C1 7th School and Workshop on Fusion Physics and Technology

The Administrative Committee of the Research Unit of the Association and the University of Thessaly organised the “Seventh School and Workshop on Fusion Physics and Technology”, held in Volos from 14 to 19 April 2008. Following the trend established during the previous years, this year’s School surpassed in success the previous ones. In spite of the effort to reduce its duration (for fiscal reasons), it had again to last for 6 days, to accommodate the large number of presentations, which were organised in 17 Sessions, of which 5 were Plenary, 3 for Fusion School, 4 as Advanced Seminars, 2 as Tutorial Sessions, and 3 as Research Seminars. The lectures were given by 12 distinguished visiting scholars (in alphabetical order: Alberti, Benkadda, Carati, Illy, Karditsas, Papastergiou, Peeters, Piosczyk, Ram, Ramponi, Weyssow, Zurita), as well as by the scientific personnel of the Association. The audience consisted of graduate students and young scientists (mostly, affiliated with the Research Unit), as well as students interested in participating in fusion activities. In order of presentation, the following talks were given:

 

Monday 14 April 2008

Plenary Session (1)

A. Ram, Invited lecture: The case for fusion energy

M. Tsalas & M. Watkins, Invited Address: Overview of the JET 2008 Experimental Program

Fusion School (1)

M. Tsalas, Elements of Electrodynamics and Introduction to Plasma

Y. Kominis, Charged particle dynamics (1) & (2)

A. Anastasiadis, Charged Particle Interaction with non Linear Structures

Advanced Seminars (1): Gyrotrons

B. Piosczyk, Development of multi-MW gyrotron at FZK: present status & goals

S. Illy, Particle-in-cell simulation tools for design and optimization of high power CW gyrotron oscillators

S. Alberti, Physics & technology of ITER-EC -upper launcher

Tuesday 15 April 2008

Plenary Session (2)

B. Weyssow, Invited Address: EFDA: Structure and Workprogram

Fusion School (2)

G.Throumoulopoulos, Introduction to Μagnetohydrodynamics

P. Lalousis, Resistive Magnetohydrodynamics

Fusion School (3)

I. Vomvoridis, Kinetic Theory

L. Vlahos, Multiple fluid theory & Waves in plasmas

K. Hizanidis, Kinetic Instabilities

N. Pelekasis, Hydrodynamic & MHD stability

N. Vlahos, Mathematical models and architecture of MHD codes

Advanced Seminars (2): Turbulence and Transport

S. Benkadda, Multiscale dynamics of impurities transport in drift waves turbulence of edge tokamak plasmas

A. Peeters, Gyrokinetic theory and simulations of turbulent transport

Advanced Seminars (3): Heating and Current Drive

A.K. Ram, Current issues in RF-Heating and current drive in tokamaks

G. Ramponi, ECRH in ITER

Wednesday 16 April 2008

Plenary Session (3)

A.K. Ram, Invited Address: Heating and current drive in fusion plasmas by radio frequency waves

A. Zurita, Invited Address: EU Commission Challenges of the EURATOM Fusion Programme

G. Ramponi, Invited lecture: Physics analysis of ITER ECW systems for optimised performance

Thursday 17 April 2008

Plenary Session (4)

A. Peeters, Invited lecture: Introduction to micro-instabilities in toroidal plasmas

D. Carati, Invited lecture: Introduction to the theory and simulation of fluid turbulence and MHD turbulence

S. Benkadda, Invited lecture: Advances in understanding the complex nature of turbulent transport in magnetized fusion plasmas

Tutorial Session (1) & (2)

Teacher – Student Interaction

Advanced Seminars (4): Viscous/LM MHD Flows (I. Sarris, N. Pelekasis)

D. Carati, Development of large-eddy simulations for viscous MHD flows

E. Votyakov, LM flows under external inhomogeneous magnetic field: wake of a magnetic obstacle

N. Vlachos, Problems in CFD modeling of MHD duct flows

Friday 18 April 2008

Plenary Session (5)

S. Alberti, Invited lecture: Gyrotron physics and technology: From fusion to NMR spectroscopy

B. Piosczyk, Invited lecture: High power gyrotrons for fusion application: Basic design, status and goals

S. Papastergiou, Invited lecture: Design and analysis of in-vessel heat transfer devices for ITER/DEMO

P. Karditsas, Invited lecture: Design issues and implications for structural integrity of fusion power plant components

Research Seminars (1)

S. Moustaizis, Physics and applications using compact plasma fusion devices

I. Tigelis, G. Latsas, J. Vomvoridis, New results for beam-wave interaction in beam tunnels

S. Papastergiou, A blanket concept for DEMO and related MHD effects

P. Karditsas, Design and performance of the power plant helium cooled divertor

D. Strintzi, Gyrokinetic studies of ion heat transport at JET

S. Varoutis, D. Valougeorgis, A. Grecos, Direct simulation of non-equilibrium flows related to fusion reactors

S. Misdanitis, D. Valougeorgis, Compressibility effects in flows under low, medium and high vacuum

S. Pantazis, D. Valougeorgis, A. Grecos, Numerical simulation of Brownian motion in a magnetic field

A. Grecos, D. Vavougios, Th. Grammenos, On Fokker-Planck type equations in stochastic transport

Saturday 19 April 2008

Research Seminars (2) & (3)

B. Weyssow, Smoothed particle hydrodynamic method with possible application to fusion plasmas

D. Apostolaki, G. Throumoulopoulos, H. Tasso, On tokamak equilibrium and stability with plasma flow parallel to the magnetic field

N. Pelekasis, D. Dimopoulos, Magnetic field effects on 3D stability of natural convection flows in differentially heated cavities

D. Grigoriadis, S. Kassinos, MHD flows in complicated domains using the immersed boundary method

C. Dritselis, I. Sarris, N. Vlachos, Particle-turbulence interaction in MHD duct flows

S. Kakarantzas, I. Sarris, A. Grecos, N. Vlachos, MHD natural convection heat transfer of liquid metals in cylindrical annuli

I. Sarris, S. Kakarantzas, C. Dritselis, N. Vlachos, Heat transfer in turbulent magnetohydrodynamic flows

K. Avramides, O. Dumbrajs, S. Kern, I. Pagonakis, J. Vomvoridis, Mode selection for a 170 GHz, 1 MW Gyrotron for ITER

Y. Kominis, K. Hizanidis, A. Ram, Quasilinear theory for momentum and spatial diffusion due to radio frequency waves in non-axisymmetric toroidal plasmas

H. Isliker, A self-organized criticality model for the magnetic topology in toroidal confinement devices

I. Sandberg, Intermittency in electromagnetic resistive ballooning turbulence

C. Tsironis, T. Samaras, L. Vlahos, Modelling the propagation of EC waves in hot anisotropic plasma with the FDTD method

G. Anastassiou, J. Vomvoridis, Post amplification of a Gaussian rf beam generated in a gyrotron via its interaction with a sheet electron beam

C2 Other Fusion-Related Educational Activities in Greece

During year 2008, a total of 10 graduate students were enrolled in the participating Universities, with fusion-related subjects. Of these, three students were participating in M.Sc. level programmes, and ten (including two of the former three) in Ph.D. programmes. Of the latter, 2 Ph. D. degrees were awarded during 2008, to Drs. Z. Ioannidis and S. Kakarantzas.

In addition, the following courses were given by faculty members (affiliated with the Association) to students, for education and training in fusion-related disciplines, in the frame of their University Curricula (hours per week per semester):

• NTUA: Plasma Waves, 13 × 4 hours per semester (undergraduate),

• NTUA: Beams and High-Power Microwaves, 13 × 4 hours per semester (undergraduate; focusing on the physics of fusion plasma heating devices),

• NTUA: Plasma Kinetic Theory, 13 × 3 hours per semester (graduate),

• U. of Athens: Plasma Physics, 13 × 4 hours per semester (undergraduate),

• U. of Ioannina: Introduction to Plasma Physics, 13 × 4 hours per semester (undergrad-uate),

• U. of Ioannina: Plasma Physics, 13 × 4 hours per semester (graduate),

• U. of Ioannina: Energy Resources, 13 × 4 hours per semester (undergraduate; one third of the course concerns Fusion),

• U. of Thessaly: Advanced Fluid Mechanics, 13 × 3 (graduate; 10% of the course concerns MHD and Fusion)

• U. of Thessaly: Advanced Energy Conversion Systems, 13 × 3 (graduate; 15% of the course concerns Fusion Technology)

• U. of Thessaloniki: Plasma Physics, 13 × 3 hours per semester (undergraduate),

• U. of Thrace: Technology I, 13 × 4 hours per semester (undergraduate; one third of the course covers Principles of Controlled Thermonuclear Fusion and Controlled Fusion Devices),

• Technical University of Crete: Laser Matter Interaction, 13 × 3 hours per semester (graduate; 10% of the course concerns Fusion),

• Technical University of Crete: Laser plasma spectroscopy and diagnostics, 13 × 3 hours per semester (graduate; 10% of the course concerns Fusion),

• U. of Cyprus: Statistical Theory and Modelling of Turbulent Flow, (graduate; 30% of the course refers to magnetohydrodynamic flows).

Of these courses, the Plasma courses, in addition to providing the general background material, typically contain fusion as a discrete entity or refer to fusion in application examples.

C3 2008 Expenditure and Personnel

The activities of the Association are funded (by about equal amounts) by the Fusion Programme of the European Union, by the General Secretariat of Research and Technology and by the participating Research Centres and Universities. The total expenditures of the Association in year 2008 are presented in the following table, rounded to kEuro (with the same figures for the previous two years, as well as the 2009 budget, for the purpose of comparison):

	Physics	Emerging Technologies	Technology & JET	Mobility	Year’s total
2006	1.156	35	56	97	1.354
2007	1.423	141	42	152	1768
2008 (Draft)	1.664	303	41	111	2.119
2009 (Budget)	1.567	345	50	151	2.113

The personnel of the Association for year 2008 is presented in the following table (in full-time equivalent), separately for physics, underlying technology, and technology:

	Physics	Emerging Technologies	EFDA (Technology & JET)	Year’s total
Faculty members	8.17			8.05
Ph.D. Researchers	11.72	4.93	1.36	18.01
Graduate Researchers	7.05			7.05
Non-Professional	1.23			1.23

C4 2008 Co-operations and Mobility Missions

Most of the work of the Research Unit of the Association is performed in collaboration with other Associations. This is facilitated both by the eligibility of this work for preferential support, under the provisions for “Projects for enhancing the mutual co-operation between Associations”, as well as by the Mobility scheme of the EURATOM Fusion Programme. During year 2008, the following missions were undertaken by personnel of the Research Unit:

C5 2008 Publications

Part of the work of the Association has appeared (or, has been accepted for publication) in scientific journals and conference proceedings during year 2008. These publications are presented in the following list (in alphabetical order, by the name of the first author, with underlined the names of personnel affiliated with the Research Unit):

[1] F. Albajar, S. Alberti, K. Avramides, T. Bonicelli, R. Claesen, O. Dumbrajs, D. Fasel, G. Gantenbein, T. Goodman, M. Henderson, J. -P. Hogge, S. Cirant, D. Fasel, S. Kern, S. Illy, J. Jin, G. Latsas, I. Pagonakis, B. Piosczyk, L. Porte, T. Rzesnicki, G. Saibene, M. Santinelli, M. Thumm, I. Tigelis, M. Q. Tran, J. Vomvoridis, “Review of the European programme for the development of the gyrotron for ITER”, EC-15, 15^th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating, 10-13 March 2008, Yosemite National Park, California, USA, Conference Proceedings 415 (2008).

[2] S. Alberti, F. Albajar, K. A. Avramides, P. Benin, W. Bin, T. Bonicelli, A. Bruschi, S. Cirant, E. Droz, O. Dumbrajs, D. Fasel, F. Gandini, T. Goodman, J. -P. Hogge, S. Illy, S. Jawla, J. Jin, S. Kern, C. Lievin, B. Marlétaz, Ph. Marmillod, I. Pagonakis, A. Perez, B. Piosczyk, L. Porte, T. Rzesnicki, U. Siravo, M. Thumm, and M. Q. Tran, “Status of development of the 2 MW, 170 GHZ coaxial-cavity gyrotron for ITER”, 33^rd Int. Conf. Infrared Millimeter THz Waves, Pasadena, California, USA, 15-19 September 2008, Conference Proceedings, p. 1, DOI: 10. 1109/ICIMW. 2008. 4665577 (2008).

[3] D. Apostolaki, G. N. Throumoulopoulos, H. Tasso, “A contribution to the equilibrium and stability of axisymmetric plasmas with field aligned flow”, 35^th EPS Conference on Plasma Physics, Crete, Greece, 9-13 June 2008, ECA 27, P2-057 (2008).

[4] K. A. Avramides, O. Dumbrajs, S. Kern, I. Gr. Pagonakis, and J. L. Vomvoridis, “Mode selection for a 170 GHz, 1 MW gyrotron”, 35^th EPS Conference on Plasma Physics, Crete, Greece, 9-13 June 2008, ECA 32F, P-4. 105, (2008).

[5] G. Breyiannis and D. Valougeorgis, “Lattice kinetic schemes in fusion plasmas”, 35^th EPS Conference on Plasma Physics, 9-13 June 2008, Crete, Greece, Paper P5. 033 (2008).

[6] G. Breyiannis, S. Varoutis and D. Valougeorgis, “Rarefied gas flow in concentric annular tube: Estimation of the Poiseuille number and the exact hydraulic diameter”, European Journal of Mechanics B/Fluids 27, 609 (2008).

[7] I. Chatziantonaki, C. Tsironis, H. Isliker and L. Vlahos, “Propagation and absorption of EC waves in the presence of magnetic islands”, 35^th EPS Conference on Plasma Physics, Crete, Greece, 9-13 June 2008, ECA 32, P-5. 093 (2008).

[8] C. D. Dritselis, A. Iatrides, I. E. Sarris and N. S. Vlachos, “Turbulent dispersion of non-metallic impurities in Magnetohydrodynamic channel flow of liquid metals at low magnetic Reynolds number”, to be presented at 6^th Intl Conference on Electromagnetic Processing of Materials, Dresden, Germany, 19-23 Oct. (2009).

[9] C. D. Dritselis and N. S. Vlachos, “Numerical study of educed coherent structures in the near-wall region of a particle-laden channel flow”, Physics of Fluids 20, 055103, (2008).

[10] O. Dumbrajs, Y. Kominis and G. S. Nusinovich, “Electron dynamics in the process of mode switching in gyrotrons”, Physics of Plasmas 16, 013102 (2009).

[11] O. Dumbrajs, Y. Kominis, and G. S. Nusinovich, “Electron Dynamics in the Process of Mode Switching in Gyrotrons”, 33^rd International Conference on Infrared, Millimeter and Terahertz Waves, 15-19September 2008, California Institute of Technology, Pasadena, California, p. 1, DOI: 10. 1109/ICIMW. 2006. 368407 (2008).

[12] D. Fidaros, L. Buehler, A. Grecos and N. Vlachos, “Numerical modelling of rotating tangential layers (jets) in shells under strong uniform magnetic field”, Intl J. for Numerical Methods in Fluids, FLD-08-063, to appear.

[13] G. Fuhr, S. Benkadda, P. Beyer, X. Garbet, I. Sandberg, H. Isliker, “Self-organization of electromagnetic plasma edge turbulence”, 35^th EPS Conference on Plasma Physics, Crete, Greece, 9-13 June 2008, ECA 32, P-1. 027 (2008).

[14] G. Fuhr, S. Benkadda, P. Beyer, M. Leconte, X. Garbet, I. Sandberg, H. Isliker, D. Reiser, I. Caldas, Z. O. Guimaraes-Filho, S. Hamaguchi, “Electromagnetic Self-Organization and Transport Barrier Relaxations in Fusion Plasmas”, 22^nd IAEA Fusion Energy Conference, Geneva, Switzerland, 13-18 Oct. 2008, IAEA-CN-165 TH/P8-9 (2008).

[15] D. G. E. Grigoriadis and S. Kassinos “Efficient simulations of wall bounded magneto-hydrodynamic flows”, 6^th GRACM, Proceedings of the 6^th GRACM, International Congress on Computational Mechanics, Thessaloniki 19-21 June 2008, 2102 (2008).

[16] D. G. E. Grigoriadis, S. C. Kassinos and E. Votyakov, “Immersed boundary method for the MHD flows of liquid metals”, J. Comput. Phys. 228, 903 (2009).

[17] J.-P. Hogge, T. P. Goodman, S. Alberti, F. Albajar, K. A. Avramides, P. Benin, S. Bethuys, W. Bin, T. Bonicelli, A. Bruschi, S. Cirant, E. Droz, O. Dumbrajs, D. Fasel, F. Gandini, G. Gantenbein, S. Illy, S. Jawla, J. Jin, S. Kern, P. Lavanchy, C. Liévin, B. Marlétaz, P. Marmillod, A. Perez, B. Piosczyk, I. Pagonakis, L. Porte, T. Rzesnicki, U. Siravo, M. Thumm, and M. Q. Tran, “First experimental results from the EU 2MW coaxial cavity ITER gyrotron prototype”, Fusion Sci. and Tech. 55, 204, (2009).

[18] A. Iatridis, I. E. Sarris and N. S. Vlachos, “Transition to turbulence in a rectangular duct subjected to high magnetic fields”, to be presented 3rd Intl Symposium on Bifurcations & Instabilities in Fluid Dynamics, Nottingham, 10-23 Aug. (2009).

[19] Z. C. Ioannidis, O. Dumbrajs, and I. G. Tigelis, “Linear and nonlinear inserts for genuinely wideband continuous frequency tunable coaxial gyrotron cavities”, International Journal of Infrared and Millimeter Waves 29, 416 (2008).

[20] Z. C. Ioannidis, G. P. Latsas, I. G. Tigelis, and O. Dumbrajs, “TM modes in coaxial cavities with inner surface corrugations”, IEEE Transactions on Plasma Science 36, 2613 (2008).

[21] H. Isliker, “Anomalous particle and heat transport modeled by the combined random walk in position and momentum space”, 35^th EPS Conference on Plasma Physics, Crete, Greece, 9-13 June 2008, ECA 32, P-1. 029 (2008).

[22] H. Isliker, Th. Pisokas, L. Vlahos, “An MHD compatible model for self-organized criticality in toroidally confined plasma”, 35^th EPS Conference on Plasma Physics, Crete, Greece, 9-13 June 2008, ECA 32, P-2. 041 (2008).

[23] S. C. Kakarantzas, I. E. Sarris, A. P. Grecos and N. S. Vlachos, “Magnetohydrodynamic natural convection in a sinusoidal upper heated cylindrical cavity”, Intl. J. Heat & Mass Transfer, R-B-07-091, accepted (2008).

[24] S. C Kakarantzas, I. E. Sarris, A. P. Grecos and N. S. Vlachos, “DNS simulation of liquid metal flow in annuli under the effect of a magnetic filed and volumetric heating”, to be presented at the 6th Intl Symposium on Turbulence, Heat and Mass Transfer, Rome, Sep. 2009.

[25] S. Kern, K. A. Avramides, M. H. Beringer, O. Dumbrajs, and Y. -H. Liu, “Gyrotron mode competition calculations: Investigations on the choice of numerical parameters”, 33^rd Int. Conf. Infrared Millimeter THz Waves, Pasadena, California, USA, 15-19 September 2008,Conference Proceedings, p. 1, DOI: 10. 1109/ICIMW. 2008. 4665584 (2008).

[26] Y. Kominis, K. Hizanidis, and A. K. Ram, “Quasilinear theory for momentum and spatial diffusion due to radio frequency waves in non-axisymmetric toroidal plasmas”, 35th EPS Conference on Plasma Physics, 9-13 June 2008, Crete, Greece, O4. 051 (2008).

[27] Y. Kominis, K. Hizanidis, and A. K. Ram, “Nonlinear theory of cyclotron resonant wave-particle interactions: analytical results beyond the quasilinear approximation”, 35th EPS Conference on Plasma Physics, 9-13 June 2008, Crete, Greece, P2. 185 (2008).

[28] Y. Kominis, A. K. Ram and K. Hizanidis, “Quasilinear theory of electron transport by radio frequency waves and non-axisymmetric perturbations in toroidal plasmas”, Physics of Plasmas 15, 122501 (2008).

[29] Y. Kominis, “Canonical Perturbation Theory and Lie Transforms: Application to Nonlinear Resonant Wave-Particle Interaction”, Nonlinear Phenomena In Complex Systems 11, 121 (2008).

[30] Y. Kominis, K. Hizanidis, D. Constantinescu, O. Dumbrajs, “Explicit near-symplectic mappings of Hamiltonian systems with Lie generating functions”, Journal of Physics A: Mathematical and Theoretical 41, 115202 (2008).

[31] Y. Kominis, “Nonlinear theory of cyclotron resonant wave-particle interactions: Analytical results beyond the quasilinear approximation”, Physical Review E 77, 016404 (2008).

[32] P J Lalousis, L. L Lengyel, R Schneider, “Two('plus one')-dimensional simulation of pellet-cloud evolution in the poloidal plane with a prescribed neutal particle source strength”, Plasma Phys. Cont. Fusion 50, 085001 (2008).

[33] L. L. Lengyel, R. Schneider, O. J. W. F. Kardaun, R. Burhenn, H. P. Zehrfeld, I. . Yu. Veselova, I. Yu. Senichenkov, V. A. Rozhansky, and P. J. Lalousis, “Pellet-Plasma Interaction: an Analysis of Pellet Injection Experiments by Means of a Multi-Dimensional MHD Pellet Code”, Contrib. Plasma Phys. 48, M0. 9-10, 623 (2008).

[34] I. Loupasakis, S. D. Moustaizis and P. Lalousis, “MHD computations for plasma trapping in open magnetic devices for high neutron flux production”, 35th EPS Conference on Plasma Phys. Hersonissos, 9 - 13 June 2008 ECA 32D, P-4. 116 (2008)

[35] S. Misdanitis and D. Valougeorgis, “Couette flow with heat transfer in the whole range of the Knudsen number”, ASME 6^th Intl Conf. on Nano-, Micro- and Mini-Channels, 23-25 June, Darmstadt, Germany, Paper 62079 (2008).

[36] S. Naris and D. Valougeorgis, “Rarefied gas flow in a triangular duct based on a boundary fitted lattice”, European J. of Mechanics B/Fluids 27, 810 (2008).

[37] Gr. Pagonakis, S. Illy, M. Silva, J. -Ph. Hogge, S. Alberti, K. A. Avramides, B. Piosczyk, F. Albajar, and T. Bonicelli, “Parameterization technique for the preliminary gun design of the EU 170 GHz 1 MW conventional cavity gyrotron for ITER”, 33^rd Int. Conf. Infrared Millimeter THz Waves, Pasadena, California, USA,15-19 September 2008, Conference Proceedings, p. 1, DOI: 10. 1109/ICIMW. 2008. 4665518 (2008).

[38] S. Pantazis and D. Valougeorgis, “Heat transfer between parallel plates via kinetic theory in the whole range of the Knudsen number”, 5^th European Thermal-Sciences Conf. , Eindhoven, 18-22 May 2008, Paper 409 (2008).

[39] P. Papadakis, G. E. Georghiou, and A. C. Metaxas, “New High Quality Adaptive Mesh Generator utilized in modeling plasma streamer propagation at atmospheric pressures”, Journal of Physics D: Applied Physics 41, 234019 (2008).

[40] N. Pelekasis and D. Dimopoulos, “Magnetic field effects on three-dimensional stability of natural convection flows in differentially heated cavities", 7^th Euromech Fluid Mechanics Conference, 14-18 Sep. 2008, Manchester, England, p. 261 (2008).

[41] A. K. Ram, J. Decker, Y. Kominis, and K. Hizanidis, “Electron Cyclotron Current Drive in Spherical Tokamaks with Application to ITER”, 22^nd IAEA Fusion Energy Conference, 13-18 October 2008, Geneva, Switzerland, P3-16 (2008).

[42] D. Rouson, S. C. Kassinos, I. Moulitsas, I. E. Sarris and X. Xu, “Dispersed-phase structural anisotropy in homogeneous magnetohydrodynamic turbulence at low magnetic Reynolds number”, Physics of Fluids 20, 025101 (2008).

[43] I. Sandberg, G. Fuhr, H. Isliker, K. Hizanidis, P. Beyer, S. Benkadda, X. Garbet, “Intermittency in Resistive Ballooning Electromagnetic Turbulence”, 35^th EPS Conference on Plasma Physics, 9-13 June 2008, Crete, Greece, ECA 32, P-2. 045 (2008).

[44] I. E. Sarris, B. Cassart, D. Carati, N. S. Vlachos, “Development of a numerical method for the modelling of nonlinear fusion plasma instabilities in Tokamaks”, 35^th European Physical Society Conference on Plasma Physics, 12-14 Aug. 2008, Crete, Greece, Paper 2. 044 (2008).

[45] I. E. Sarris, A. Iatridis, C. D. Dritselis and N. S. Vlachos, “Low-Prandtl number MHD cooling in a vertical cylindrical container”, to be presented at 12^th Euromech European Turbulence Conference, Marburg, Germany, 7-10 Sep. 2009.

[46] G. N. Throumoulopoulos, H. Tasso, “A sufficient condition for the linear stability of magnetohydrodynamic equilibria with field aligned incompressible flows” 35^th EPS Conference on Plasma Physics, 9-13 June 2008, Crete, Greece, ECA 27, P2-180 (2008).

[47] G. N. Throumoulopoulos, H. Tasso, G. Poulipoulis, “Side conditioned axisymmetric equilibria with incompressible flow”, J. Plasma Physics 74, 327 (2008).

[48] G. Tigelis, J. -Y. Raguin, Z. C. Ioannidis, G. P. Latsas, and A. J. Amditis, “Dispersion characteristics of arbitrary periodic structures with rectangular grooves”, International Journal of Infrared and Millimeter Waves 29, 432 (2008).

[49] C. Tsironis, T. Samaras and L. Vlahos, “Scattered-field FDTD algorithm for hot anisotropic plasma with application to EC heating”, IEEE Transactions on Antennas and Propagation 56, 2988 (2008).

[50] C. Tsironis, T. Samaras and L. Vlahos, “FDTD algorithm for the propagation of EC waves in hot anisotropic plasma”, 35^th EPS Conference on Plasma Physics, Crete, Greece, 9-13 June 2008, ECA 32, P-5. 089 (2008).

[51] S. Varoutis, D. Valougeorgis and F. Sharipov, “Rarefied gas flow through tubes of finite length”, 26^th Rarefied Gas Dynamics, Kyoto, Japan, 21-25 June 2008, Paper 26054 (2008).

[52] S. Varoutis, D. Valougeorgis, O. Sazhin and F. Sharipov, “Rarefied gas flow through short tubes into vacuum”, J. of Vacuum Science and Technology A 26, 228 (2008).

[53] S. Varoutis, V. Hauer, C. Day and D. Valougeorgis, “Experimental and computational study of gas flows through long channels of various cross sections in the whole range of the Knudsen number”, Journal of Vacuum Science and Technology A 27, 89 (2009).

[54] M. K. Verma, T. Lessinnes, D. Carati, I. E. Sarris, K. Kumar and M. Singh, “Dynamo transition in a low-dimensional model”, Physical Review E 78, 036409 (2008).