TY - JOUR AU - Klapcsik, Kálmán TI - GPU accelerated numerical investigation of the spherical stability of an acoustic cavitation bubble excited by dual-frequency JF - ULTRASONICS SONOCHEMISTRY J2 - ULTRASON SONOCHEM VL - 77 PY - 2021 PG - 15 SN - 1350-4177 DO - 10.1016/j.ultsonch.2021.105684 UR - https://m2.mtmt.hu/api/publication/32392086 ID - 32392086 N1 - Export Date: 2 November 2021 CODEN: ULSOE Correspondence Address: Klapcsik, K.; Budapest University of Technology and Economics, P.O. Box 91, 1521, Hungary; email: kklapcsik@hds.bme.hu Funding details: Magyar Tudományos Akadémia, MTA Funding details: Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, NKFIA, BO/00217/20/6 Funding details: Innovációs és Technológiai Minisztérium Funding text 1: Supported by the ?NKP-20?5-152 New National Excellence Program of the Ministry for Innovation and Technology from the source of the National Research, Development and Innovation Fund and by the J?nos Bolyai Research Scholarship (BO/00217/20/6) of the Hungarian Academy of Sciences. The author would like to thank F. Heged?s, his former supervisor, for the numerous discussions and help in the evaluation of numerical results. Funding text 2: Supported by the ÚNKP-20–5-152 New National Excellence Program of the Ministry for Innovation and Technology from the source of the National Research, Development and Innovation Fund and by the János Bolyai Research Scholarship (BO/00217/20/6) of the Hungarian Academy of Sciences. The author would like to thank F. Hegedűs, his former supervisor, for the numerous discussions and help in the evaluation of numerical results. AB - The spherical stability of an acoustic cavitation bubble under dual-frequency excitation is investigated numerically. The radial dynamics is described by the Keller-Miksis equation, which is a second-order ordinary differential equation. The surface dynamics is modelled by a set of linear ordinary differential equation according to Hao and Prosperetti (1999), which takes into account the effect of vorticity by boundary layer approximation. Due to the large amount of investigated parameter combinations, the numerical computations were carried out on graphics processing units. The results showed that for bubble size between RE = 2 mu m and 4 mu m, the combination of a low and a high frequency, and the combination of two close but not equal frequencies are important to prevent the bubble losing its shape stability, while reaching the chemical threshold (Rmax/RE = 3) (Kalm ' ar et al., 2020). The phase shift between harmonic components of dual-frequency excitation has no effect on the shape stability. LA - English DB - MTMT ER - TY - JOUR AU - Omoteso, K.A. AU - Roy-Layinde, T.O. AU - Laoye, J.A. AU - Vincent, U.E. AU - McClintock, P.V.E. TI - Acoustic vibrational resonance in a Rayleigh-Plesset bubble oscillator JF - ULTRASONICS SONOCHEMISTRY J2 - ULTRASON SONOCHEM VL - 70 PY - 2021 SN - 1350-4177 DO - 10.1016/j.ultsonch.2020.105346 UR - https://m2.mtmt.hu/api/publication/31648132 ID - 31648132 N1 - Összes idézések száma a WoS-ban: 0 LA - English DB - MTMT ER - TY - JOUR AU - Sojahrood, A.J. AU - Earl, R. AU - Kolios, M.C. AU - Karshafian, R. TI - Investigation of the 1/2 order subharmonic emissions of the period-2 oscillations of an ultrasonically excited bubble JF - PHYSICS LETTERS A J2 - PHYS LETT A VL - 384 PY - 2020 IS - 23 SN - 0375-9601 DO - 10.1016/j.physleta.2020.126446 UR - https://m2.mtmt.hu/api/publication/31273246 ID - 31273246 N1 - Összes idézések száma a WoS-ban: 0 LA - English DB - MTMT ER - TY - JOUR AU - Vincent, U. E. AU - Kolebaje, O. TI - Introduction to the dynamics of driven nonlinear systems JF - CONTEMPORARY PHYSICS J2 - CONTEMP PHYS VL - 63 PY - 2020 IS - 3 SP - 169 EP - 192 PG - 24 SN - 0010-7514 DO - 10.1080/00107514.2020.1850003 UR - https://m2.mtmt.hu/api/publication/31853356 ID - 31853356 N1 - Funding Agency and Grant Number: Alexander von Humboldt Foundation, GermanyAlexander von Humboldt Foundation; Royal Society of London, United KingdomRoyal Society of London Funding text: UEV acknowledge continuous research supports from the Alexander von Humboldt Foundation, Germany and the Royal Society of London, United Kingdom through their Newton international Fellow funding. LA - English DB - MTMT ER - TY - JOUR AU - Haghi, H. AU - Sojahrood, A. J. AU - Kolios, Michael C. TI - Collective nonlinear behavior of interacting polydisperse microbubble clusters JF - ULTRASONICS SONOCHEMISTRY J2 - ULTRASON SONOCHEM VL - 58 PY - 2019 PG - 13 SN - 1350-4177 DO - 10.1016/j.ultsonch.2019.104708 UR - https://m2.mtmt.hu/api/publication/30882591 ID - 30882591 N1 - Funding Agency and Grant Number: Natural Sciences and Engineering Research Council of CanadaNatural Sciences and Engineering Research Council of Canada (NSERC)CGIAR [RGPIN-2017-06496]; NSERCNatural Sciences and Engineering Research Council of Canada (NSERC); Canadian Institutes of Health ResearchCanadian Institutes of Health Research (CIHR); Terry Fox New Frontiers Program Project Grant in Ultrasound and MRI for Cancer Therapy [1034]; CIHR Vanier ScholarshipCanadian Institutes of Health Research (CIHR) Funding text: The work is supported by the Natural Sciences and Engineering Research Council of Canada (Discovery Grant RGPIN-2017-06496), NSERC and the Canadian Institutes of Health Research (Collaborative Health Research Projects) and the Terry Fox New Frontiers Program Project Grant in Ultrasound and MRI for Cancer Therapy (project #1034). A. J. Sojahrood is supported by a CIHR Vanier Scholarship. AB - Acoustically excited microbubbles (MBs) have shown to exhibit rich dynamics, enabling them to be employed in various applications ranging from chemistry to medicine. Exploiting the full potential of MBs for applications requires a good understanding of their complex dynamics. Improved understanding of MB oscillations can lead to further enhancement in optimizing their efficacy in many applications and also invent new ones. Oscillating MBs have been shown to generate secondary pressure waves that modify the dynamics of the MBs in their proximity. A modified Keller-Miksis equation is used to account for inter-bubble interactions. The oscillatory dynamics of each MB within clusters was computed by numerically solving the resulting system of coupled nonlinear second order differential equations in potential fluid flow. Frequency response analysis and bifurcation diagrams were employed to track the dynamics of interacting MBs. We start with investigating the effect of inter-bubble interactions for cases of three and four MBs over a wide range of acoustic and geometric parameters. Emergent collective behavior was observed which are dominated by the dynamics of the largest MB within the cluster. The emergent dynamics of smaller MBs within clusters can be characterized by constructive and destructive inter-bubble interactions. In constructive interactions, the radial oscillations of smaller MBs matched those of the largest MB and their oscillations are amplified. In destructive interactions, the oscillations of smaller bubbles are suppressed so that their oscillations match those of the largest MB. Furthermore, a special case of constructive interactions is presented where dominant MB (largest) can force smaller MBs into period doubling and subharmonic oscillations. The collective behavior is further investigated in large MB cluster and it is shown that largest MBs, even in small numbers can force smaller ones into period doubling and subharmonic oscillations. LA - English DB - MTMT ER - TY - JOUR AU - Sojahrood, A.J. AU - Wegierak, D. AU - Haghi, H. AU - Karshfian, R. AU - Kolios, Michael C. TI - A simple method to analyze the super-harmonic and ultra-harmonic behavior of the acoustically excited bubble oscillator JF - ULTRASONICS SONOCHEMISTRY J2 - ULTRASON SONOCHEM VL - 54 PY - 2019 SP - 99 EP - 109 PG - 11 SN - 1350-4177 DO - 10.1016/j.ultsonch.2019.02.010 UR - https://m2.mtmt.hu/api/publication/30479619 ID - 30479619 N1 - Department of Physics, Ryerson University, Toronto, Canada Institute for Biomedical Engineering, Science and Technology (IBEST) a partnership between Ryerson University and St. Mike's Hospital, Toronto, Ontario, Canada Cited By :30 Export Date: 28 February 2024 CODEN: ULSOE Correspondence Address: Sojahrood, A.J.; Department of Physics, Canada; email: amin.jafarisojahrood@ryerson.ca LA - English DB - MTMT ER - TY - JOUR AU - Varga, Roxána AU - Mettin, Robert TI - High Dimensional Parameter Fitting of the Keller–Miksis Equation on an Experimentally Observed Dual-Frequency Driven Acoustic Bubble JF - PERIODICA POLYTECHNICA-MECHANICAL ENGINEERING J2 - PERIOD POLYTECH MECH ENG VL - 64 PY - 2019 IS - 4 SP - 326 EP - 335 PG - 10 SN - 0324-6051 DO - 10.3311/PPme.14141 UR - https://m2.mtmt.hu/api/publication/30814141 ID - 30814141 N1 - Cited By :2 Export Date: 28 February 2024 CODEN: PPMMB Correspondence Address: Varga, R.; Department of Hydrodynamic Systems, P.O.B. 91, Hungary; email: rvarga@hds.bme.hu LA - English DB - MTMT ER - TY - JOUR AU - Hegedűs, Ferenc AU - Lauterborn, W AU - Parlitz, U AU - Mettin, R TI - Non-feedback technique to directly control multistability in nonlinear oscillators by dual-frequency driving: GPU accelerated topological analysis of a bubble in water JF - NONLINEAR DYNAMICS J2 - NONLINEAR DYNAM VL - 94 PY - 2018 IS - 1 SP - 273 EP - 293 PG - 21 SN - 0924-090X DO - 10.1007/s11071-018-4358-z UR - https://m2.mtmt.hu/api/publication/3393087 ID - 3393087 N1 - Cited By :13 Export Date: 1 November 2021 CODEN: NODYE Correspondence Address: Parlitz, U.; Research Group Biomedical Physics, Germany; email: ulrich.parlitz@ds.mpg.de Funding details: Deutsche Forschungsgemeinschaft, DFG, ME 1645/7-1 Funding details: Magyar Tudományos Akadémia, MTA Funding details: Max-Planck-Gesellschaft, MPG Funding text 1: Acknowledgements Open access funding provided by Max Planck Society. This paper was supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences and the Deutsche Forschungsgemeinschaft (DFG) Grant No. ME 1645/7-1. Funding text 2: Open access funding provided by Max Planck Society. This paper was supported by the J?nos Bolyai Research Scholarship of the Hungarian Academy of Sciences and the Deutsche Forschungsgemeinschaft (DFG) Grant No.?ME 1645/7-1. LA - English DB - MTMT ER - TY - JOUR AU - Klapcsik, Kálmán AU - Varga, Roxána AU - Hegedűs, Ferenc TI - Bi-parametric topology of subharmonics of an asymmetric bubble oscillator at high dissipation rate. The exoskeleton, its internal structure and the missing fine substructure TS - The exoskeleton, its internal structure and the missing fine substructure JF - NONLINEAR DYNAMICS J2 - NONLINEAR DYNAM VL - 94 PY - 2018 IS - 4 SP - 2373 EP - 2389 PG - 17 SN - 0924-090X DO - 10.1007/s11071-018-4497-2 UR - https://m2.mtmt.hu/api/publication/3412619 ID - 3412619 LA - English DB - MTMT ER - TY - JOUR AU - Hegedűs, Ferenc TI - Topological analysis of the periodic structures in a harmonically driven bubble oscillator near Blake's critical threshold: Infinite sequence of two-sided Farey ordering trees JF - PHYSICS LETTERS A J2 - PHYS LETT A VL - 380 PY - 2016 IS - 9-10 SP - 1012 EP - 1022 PG - 11 SN - 0375-9601 DO - 10.1016/j.physleta.2016.01.022 UR - https://m2.mtmt.hu/api/publication/3028300 ID - 3028300 LA - English DB - MTMT ER - TY - JOUR AU - Varga, Roxána AU - Hegedűs, Ferenc TI - Classification of the bifurcation structure of a periodically driven gas bubble JF - NONLINEAR DYNAMICS J2 - NONLINEAR DYNAM VL - 86 PY - 2016 IS - 2 SP - 1239 EP - 1248 PG - 10 SN - 0924-090X DO - 10.1007/s11071-016-2960-5 UR - https://m2.mtmt.hu/api/publication/3105702 ID - 3105702 N1 - Cited By :10 Export Date: 1 November 2021 CODEN: NODYE Correspondence Address: Varga, R.; Department of Hydrodynamic Systems, Hungary; email: rvarga@hds.bme.hu Funding details: Hungarian Scientific Research Fund, OTKA, K81621 Funding details: Magyar Tudományos Akadémia, MTA Funding text 1: The research described in this paper was supported by the Hungarian Scientific Research Fund—OTKA, Grant No. K81621. This paper was supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences. LA - English DB - MTMT ER - TY - CHAP AU - Hegedűs, Ferenc AU - Varga, Roxána AU - Klapcsik, Kálmán ED - Vad, János TI - Bifurcation Structure Of A Periodically Driven Bubble Oscillator Near Blake’s Critical Threshold T2 - Proceedings of Conference on Modelling Fluid Flow (CMFF'15) PB - CFD.HU Áramlástechnikai Kft CY - Budapest SN - 9789633131909 PY - 2015 PG - 8 UR - https://m2.mtmt.hu/api/publication/2936050 ID - 2936050 AB - It is well-known that gas/vapour bubbles in liquids growth indefinitely if the ambient pressure exceeds Blake’s critical threshold. For several decades of investigations, researchers tried to find numerical evidence for the stabilization of such bubbles by applying a harmonically varying pressure field on the liquid domain (ultrasonic irradiation) in this regime, with only partial success. Since, the applied linearization on the bubble models restricted the findings only for small amplitude radial oscillations. Therefore, the present paper intends to reveal the particularly complex dynamics of a harmonically excited bubble near, but still below Blake’s threshold. The computed solutions with a variety of periodicity, e.g., from period 1 up to period 9, form a well-organised structure with respect to the pressure amplitude of the excitation, provided that the applied frequency is higher than the first subharmonic resonance frequency of the bubble. This predictable behaviour provides a good basis for further investigation to find the relevant stable oscillations beyond Blake’s threshold. Although, the investigated model is the very simple Rayleigh—Plesset equation, the applied numerical technique is free of the restriction of low amplitude oscillations. LA - English DB - MTMT ER - TY - JOUR AU - Hegedűs, Ferenc AU - Klapcsik, Kálmán TI - The effect of high viscosity on the collapse-like chaotic and regular periodic oscillations of a harmonically excited gas bubble JF - ULTRASONICS SONOCHEMISTRY J2 - ULTRASON SONOCHEM VL - 27 PY - 2015 SP - 153 EP - 164 PG - 12 SN - 1350-4177 DO - 10.1016/j.ultsonch.2015.05.010 UR - https://m2.mtmt.hu/api/publication/2913237 ID - 2913237 N1 - Megjegyzés-25261139 Hiányzó Jelleg: 'JOUR\n\nArticle' Admin megjegyzés-25261139 tblcategory: (Category) ('JOUR\n\nArticle') #Jelleg LA - English DB - MTMT ER - TY - JOUR AU - Varga, Roxána AU - Paál, György TI - Numerical investigation of the strength of collapse of a harmonically excited bubble JF - CHAOS SOLITONS & FRACTALS J2 - CHAOS SOLITON FRACT VL - 76 PY - 2015 IS - 0 SP - 56 EP - 71 PG - 16 SN - 0960-0779 DO - 10.1016/j.chaos.2015.03.007 UR - https://m2.mtmt.hu/api/publication/2873602 ID - 2873602 LA - English DB - MTMT ER - TY - JOUR AU - Hegedűs, Ferenc TI - Stable bubble oscillations beyond Blake’s critical threshold JF - ULTRASONICS J2 - ULTRASONICS VL - 54 PY - 2014 IS - 4 SP - 1113 EP - 1121 PG - 9 SN - 0041-624X DO - 10.1016/j.ultras.2014.01.006 UR - https://m2.mtmt.hu/api/publication/2697910 ID - 2697910 LA - English DB - MTMT ER -