TY - JOUR AU - Fehér, Eszter AU - Havasi-Tóth, Balázs AU - Kalmár-Nagy, Tamás TI - Hysteretic behavior of spatially coupled phase-oscillators JF - MATHEMATICAL MODELLING OF NATURAL PHENOMENA J2 - MATH MODEL NAT PHENO VL - 15 PY - 2020 PG - 13 SN - 0973-5348 DO - 10.1051/mmnp/2019029 UR - https://m2.mtmt.hu/api/publication/30738502 ID - 30738502 LA - English DB - MTMT ER - TY - JOUR AU - Havasi-Tóth, Balázs TI - Nauticle: a general-purpose particle-based simulation tool JF - COMPUTER PHYSICS COMMUNICATIONS J2 - COMPUT PHYS COMMUN VL - 246 PY - 2020 PG - 15 SN - 0010-4655 DO - 10.1016/j.cpc.2019.07.018 UR - https://m2.mtmt.hu/api/publication/30741904 ID - 30741904 AB - Nauticle is a general-purpose simulation tool for the flexible and highly configurable application of particle-based methods of either discrete or continuum phenomena. The paper introduces a novel approach to the implementation which handles a general formulation composed of user-defined expressions and interaction-laws covering an extensive range of particle-based methods. As a result, Nauticle has three distinct levels for users and developers. At the top level, the Symbolic Form Language (SFL) of Nauticle facilitates the formulation of user-defined numerical models in text-based configuration files. The SFL can be intuitively extended at the intermediate level with new particle methods without tedious re-coding or even the knowledge of the bottom level. The paper presents the structure of the underlying general algorithm; then the top two levels are discussed in detail and illustrated by simple application examples. Finally, the efficiency of the code is also tested through a performance benchmark. LA - English DB - MTMT ER - TY - JOUR AU - Ódor, Géza AU - Hartmann, Bálint TI - Heterogeneity effects in power grid network models JF - PHYSICAL REVIEW E: COVERING STATISTICAL NONLINEAR BIOLOGICAL AND SOFT MATTER PHYSICS (2016-) J2 - PHYSICAL REVIEW E VL - 98 PY - 2018 IS - 2 PG - 9 SN - 2470-0045 DO - 10.1103/PhysRevE.98.022305 UR - https://m2.mtmt.hu/api/publication/30393877 ID - 30393877 LA - English DB - MTMT ER - TY - CHAP AU - Havasi-Tóth, Balázs AU - Szabó, K. Gábor ED - Damien, Violeau ED - Alexis, Hérault ED - Antoine, Joly TI - Flow Structure Detection with Smoothed Particle Hydrodynamics T2 - Proceedings of the 9th SPHERIC International Workshop PB - s.n. CY - Paris SN - 8876170200 PY - 2014 SP - 208 EP - 215 PG - 8 UR - https://m2.mtmt.hu/api/publication/2699172 ID - 2699172 AB - We discuss how existing flow structure detection methods can be realised in Smoothed Particle Hydrodynamcs (SPH) simulations. We demonstrate the use of the Delta criterion for the detection of instantaneous Eulerian flow structures. The standard calculation of the velocity gradient tensor (VGT) results too noisy gradient field. We propose a correction method based on the idea of XSPH that yields a much smoother VGT field, enabling significantly more accurate structure detection. We also demonstrate on test cases the process in which the instantaneous Eulerian tools are used to locate Lagrangian coherent flow structures. LA - English DB - MTMT ER -