Search Results - "SPINEANU, F"

Random and quasi-coherent aspects in particle motion and their effects on transport and turbulence evolution by Vlad, M, Spineanu, F

“…The quasi-coherent effects in two-dimensional incompressible turbulence are analyzed starting from the test particle trajectories. They can acquire coherent…”
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Hidden drifts in turbulence by Vlad, M., Spineanu, F.

“…The paper defines and discusses the concept of hidden drifts in two-dimensional turbulence. These are ordered components of the trajectories that average to…”
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On the late phase of relaxation of two-dimensional fluids: turbulence of unitons by Spineanu, F, Vlad, M

“…The two-dimensional ideal fluid and the plasma confined by a strong magnetic field exhibit an intrinsic tendency to organization due to the inverse spectral…”
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DIFFUSION AND STOCHASTIC ISLAND GENERATION IN THE MAGNETIC FIELD LINE RANDOM WALK by Vlad, M, SPINEANU, F

“…The cross-field diffusion of field lines in stochastic magnetic fields described by the 2D+slab model is studied using a semi-analytic statistical approach,…”
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NONLINEAR EFFECTS IN PARTICLE TRANSPORT IN STOCHASTIC MAGNETIC FIELDS by Vlad, M., Spineanu, F., Croitoru, A.

“…ABSTRACT Collisional particle transport in stochastic magnetic fields is studied using a semi-analytical method. The aim is to determine the influence of the…”
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Impurity pinch from a ratchet process by Vlad, M, Spineanu, F, Benkadda, S

“…A ratchet-type average velocity is shown to appear for test particles moving in a stochastic potential and a magnetic field that is space dependent. This is a…”
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Stationary vortical flows in two-dimensional plasma and in planetary atmospheres by SPINEANU, F, VLAD, M

“…We derive the equation governing the asymptotic stationary states generated by decaying turbulence in two-dimensional plasma and planetary atmosphere. These…”
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Trajectory statistics and turbulence evolution by Vlad, M., Spineanu, F.

“…The aim of this paper is to understand the tendency to organization of the turbulence in two-dimensional ideal fluids. A different perspective on vorticity…”
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Soliton modulation of the turbulence envelope and plasma rotation by Spineanu, F, Vlad, M

“…The space-uniform amplitude envelope of the ion-temperature-gradient driven turbulence is unstable to small perturbations and evolves to nonuniform,…”
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Self-organization of the vorticity field in two-dimensional quasi-ideal fluids: The statistical and field-theoretical formulations by Spineanu, F., Vlad, M.

“…•The objective is to understand the self-organization of the vorticity in 2D fluids.•We compare two approaches: statistical and field theoretical.•The Field…”
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Anomalous transport in plasmas by Balescu, R., Vlad, M., Spineanu, F., Misguich, J.

“…The application of stochastic methods to the problem of particle and energy transport in turbulent plasmas is briefly reviewed. The “classical” Corrsin…”
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Spectrum of coherent structures in a turbulent environment by Spineanu, F, Vlad, M

“…The statistical properties of the turbulent field consisting of drift waves randomly interacting with a coherent structure are investigated. By using a…”
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Pole dynamics for the Flierl-Petviashvili equation and zonal flow by SPINEANU, F, VLAD, M, ITOH, K, SANUKI, H, ITOH, S.-I

“…Using the method of positions of the complex singularities, we identify a class of new, exact solutions of the Flierl-Petviashvili equation. The solutions are…”
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Self-duality of the asymptotic relaxation states of fluids and plasmas by Spineanu, F, Vlad, M

“…The states of asymptotic relaxation of two-dimensional fluids and plasmas present a high degree of regularity and obedience to the sinh-Poisson equation. We…”
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Magnetic line trapping and effective transport in stochastic magnetic fields by Vlad, M, Spineanu, F, Misguich, J H, Balescu, R

“…The transport of collisional particles in stochastic magnetic fields is studied using the decorrelation trajectory method. The nonlinear effect of magnetic…”
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Diffusion in biased turbulence by Vlad, M, Spineanu, F, Misguich, J H, Balescu, R

“…Particle transport in two-dimensional divergence-free stochastic velocity fields with constant average is studied. Analytical expressions for the Lagrangian…”
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Collisional effects on diffusion scaling laws in electrostatic turbulence by Vlad, M., Spineanu, F., Misguich, J., Balescu, R.

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Coherent structures in a turbulent environment by Spineanu, F, Vlad, M

“…A systematic method is proposed for the determination of the statistical properties of a field consisting of a coherent structure interacting with turbulent…”
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Diffusion with intrinsic trapping in two-dimensional incompressible stochastic velocity fields by Vlad, M., Spineanu, F., Misguich, J. H., Balescu, R.

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Reply to “Comment on ‘Diffusion in biased turbulence’ ” by Vlad, M., Spineanu, F., Misguich, J. H., Balescu, R.

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