Environmental flows and reactions  Page description

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Details of project

  
Identifier
47233
Type K
Principal investigator Tél, Tamás
Title in Hungarian Áramlások és reakciók környezetünkben
Title in English Environmental flows and reactions
Panel Physics 1
Department or equivalent Department of Theoretical Physics (Eötvös Loránd University)
Participants Benczik, Izabella Júlia
Bene, Gyula
Jánosi, Imre Miklós
Károlyi, György
Scheuring, István
Starting date 2004-01-01
Closing date 2008-06-30
Funding (in million HUF) 8.893
FTE (full time equivalent) 0.00
state closed project





 

Final report

  
Results in Hungarian
Foglalkoztunk a kaotikus folyadékáramlásokban zajló kémiai és biológiai reakciók leírásával, különös tekintettel a front-terjedéssel kapcsolatos reakciókra, és kimutattuk, hogy másként zajlanak le, mint álló, vagy akár jól kevert közegben. A kicsiny, de véges méretű részecskék sodródása eltér a pontszerű részecskék viselkedésétől folyadék áramlásban, Segítségükkel jól modelleztük az esőcseppek mozgását felhőkben. Kimutattuk, hogy számos populációdinamikai folyamatban a populációk fraktál szálak mentén rendeződnek el, s ezért újszerű tulajdonságokkal rendelkeznek. Kísérleteket végeztünk a környezeti áramlások témakörében, elvégeztük környezeti adatsorok nemlineáris idősor analízisét, és foglalkoztunk az égi mechanikai folyamatok kaotikus vonásaival.
Results in English
Chemical and biological reactions have been investigated in chaotic fluid flows, with particular emphasis on reactions spreading in the form of fronts, and were pointed out to have different character than in a standing or well mixed environment. The advection of small but finite size particles differs from that of point particles. The motion of raindrops in clouds has been faithfully modelled by such particles. We pointed out that populations becomes, in several cases, arranged along fractal filaments. Their dynamics exhibits therefore novel features. We carried out experiments in the field of environmental flows, applied the method of nonlinear time series analysis to environmental data, and investigated the chaotic aspects of phenomena in celestial mechanics.
Full text http://real.mtak.hu/1734/
Decision
Yes





 

List of publications

  
Benczik I J, Neufeld Z, Tél T: Multifractal spectra of chemical fields in fluid flows, Physical Review E 71, 016208 1-6, 2005
Scheuring I; Domokos G: Sturdy cycles in the chaotic Tribolium castaneum data series, Theor. Popul. Biol. 67, 127-139, 2005
Schneider J.; J. Schmalzl, T. Tél: Lagrangian avemes of transport in the Earth mantle, Chaos 17, 033115, 2007
Károlyi G.; Tél T.: Chemical Transients in Closed Chaotic Flows: The Role of Effective Dimensions, PRL 95 264501, 2005
Tél T.; A.P.S. de Moura, C. Grebogi, G. Károlyi: Chemical and biological activity in open flows: A dynamical system approach, Physics Reports 413, 91-196, 2005
Károlyi G.: Fractal scaling of microbial colonies affects growth, Physical Review E 71 (2005) 031915., 2005
Muller R. and I.M. Janosi: Empirical mode decomposition and correlation properties of long daily ozone records, Physical Review E, 71, 056126, 2005
Hunyadi V.; D. Chretien, and I.M. Janosi: Mechanical Stress Induced Mechanism of Microtubule Catastrophes, Journal of Molecular Biology, 348, 927-938, 2005
Károlyi G.; Neufeld Z.; Scheuring I.: Rock-scissors-paper game in a chaotic flow: The effect of dispersion on the cyclic competition of microorganisms, Journal of Theoretical Biology 236, 12-20, 2005
Benczik I J, Károlyi G, Scheuring I, Tél T: Coexistence of inertial particles in chaotic flows, Chaos 16, 043110, 2006
Benczik I J, Tél T, Köllő Z: Modulated point vortex couples on a beta-plane: dynamics and chaotic advection, J. Fluid Mech, 582, 1-22, 2007
Vanyó J, Tél T: Rotation in the restricted three-body probalem, Chaos 17, 013113, 2007
Vilela R.D, Tél T, de Moura A.P.S, Grebogi C: Signatures of fractal clustering of aerosols advectied under gravity, Phys. Rev. E. 75, 065203, 2007
Tél T, Lai Y-C, Gruiz M: Noise-induced chaos: A consequence of long deterministic transients, Int. J. Bif. Chaos 18, 509-520, 2008
Pattantyús-Ábrahám M, Tél T, Krámer T, Józsa J: Mixing properties of a shallow basin due to a wind-induced chaotic flow, Advances in Water Resources 31, 525-534, 2008
Bartos I, Jánosi I.M: Atmospheric response function over land: Strong asymmetries in daily temperature fluctuations, Geophysical Research Letters, 32, L23820, 2005
Király A, Bartos I, Jánosi I.M: Correlation properties of daily temperature anomalies over land, Tellus A, 58, 593-600, 2006
Bartos I, Jánosi I.M: Nonlinear correlations of daily temperature records over land, Nonlinear Processes in Geophysics, 13, 571-576, 2006
Gyüre B, Jánosi I.M: Laboratory modeling of atmospheric flow phenomena: Mountain waves., Időjárás 110 (Quart. J. of the Hungarian Meteorological Service), 299-307, 2006
Scheuring, I. and Domokos, G.: Only noise can induce chaos in discrete populations, Oikos 116, 361-366, 2007
Kiss, P., I. M. Jánosi, and O. Torres: Early calibration problems detected in TOMS Earth-Probe aerosol signal, Geophys. Res. Lett., 34, 107803, 2007
Halász, G., B. Gyüre, I. M. Jánosi, K. G. Szabó, and T. Tél: Vortex flow generated by a magnetic stirrer, American Journal of Physics, 75, 1092-1098, 2007
Kiss, P., R. Müller, and I. M. Jánosi: Long-range correlations of extrapolar total ozone are determined by the global atmospheric circulation, Nonlinear Processes in Geophysics, 14, 435-442, 2007
Gyüre, B., I. Bartos, and I. M. Jánosi: Nonlinear statistics of daily temperature fluctuations reproduced in a laboratory experiment, Physical Review E, 76, 037301, 2007
Vincze, M., P. Kozma, B. Gyüre, I. M. Jánosi, K. G. Szabó, and T.Tél: Amplified internal pulsations on a stratified exchange flow excited by interaction between a thin sill and external seiche, Physics of Fluids, 19, 108108, 2007
Biró, I.,K. G. Szabó, B. Gyüre, I. M. Jánosi, and T. Tél: Power-law decaying oscillations of neutrally buoyant spheres in continuously stratified fluid, Physics of Fluids, 20, 051705, 2008
Gyüre, B. and I. M. Jánosi: Basics of lavalamp convection, Physics of Fluids, accepted for publication, 2008
Károlyi, G., T. Tél: Effective dimensions and chemical reactions in fluid flows, Physical Review E 76, 046315, 2007
Biemond, J.J.B., A.P.S. de Moura, G. Károlyi, C. Grebogi, H. Nijmeijer: Onset of chaotic advection in open flows, Physical Review E 78 , 016317, 2008
Altmann E. G., Tél, T: Poincaré recurrences from the perspective of transient chaos, Phys. Rev. Lett., 174101, 2008
Altmann E. G., Tél, T: Poincaré recurrences and transient chaos in leaked systems, arXiv:0808.3785v1 [nlinCD] 27 Aug, 2008
Escribano B., J. Vanyó, I. Tuval, J.H.E. Cartwright, G.L. Gonzales, O. Piro, T. Tél: Dynamics of tidal synchronization and orbit circularization of celestial bodies, Phys.Rev. E, accepted, 2008
Tél, T., Y.-C. Lai: Chaotic transients in spatially extended systems, Physics Reports 460, 245-275, 2008
Zahnow, J.C., R.D. Vilela, U. Feudel, T. Tél: Aggregation and fragmentation dynamics of inertial particles in chaotic flows, Phys. Rev. E 77, 055301(R), 2008



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