TY - JOUR AU - Kubicsek, Ferenc AU - Kozák, Áron AU - Turányi, Tamás AU - Zsély, István Gyula AU - Papp, Máté AU - Abu Taleb Al-awamleh, Ahmad AU - Hegedűs, Ferenc TI - Ammonia production by microbubbles: a theoretical analysis of achievable energy intensity JF - ULTRASONICS SONOCHEMISTRY J2 - ULTRASON SONOCHEM PY - 2024 SN - 1350-4177 UR - https://m2.mtmt.hu/api/publication/34576564 ID - 34576564 LA - English DB - MTMT ER - TY - JOUR AU - Kubicsek, Ferenc AU - Hegedűs, Ferenc TI - Assessment of the energy efficiency of ammonia production by microbubbles JF - PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING J2 - PERIOD POLYTECH CHEM ENG PY - 2024 SN - 0324-5853 UR - https://m2.mtmt.hu/api/publication/34569489 ID - 34569489 LA - English DB - MTMT ER - TY - CHAP AU - Kubicsek, Ferenc AU - Hegedűs, Ferenc ED - Csüllög, Mihály ED - Mankovits, Tamás TI - Bubbles and producing ammonia T2 - Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering PB - University of Debrecen CY - Debrecen SN - 9783036414454 PY - 2023 SP - 55 EP - 55 PG - 1 UR - https://m2.mtmt.hu/api/publication/34568686 ID - 34568686 LA - English DB - MTMT ER - TY - JOUR AU - Krähling, Péter AU - Steyer, J. AU - Parlitz, U. AU - Hegedűs, Ferenc TI - Attractor selection in nonlinear oscillators by temporary dual-frequency driving JF - NONLINEAR DYNAMICS J2 - NONLINEAR DYNAM VL - 111 PY - 2023 SP - 19209 EP - 19224 PG - 16 SN - 0924-090X DO - 10.1007/s11071-023-08855-3 UR - https://m2.mtmt.hu/api/publication/34149133 ID - 34149133 N1 - Funding Agency and Grant Number: Projekt DEAL; Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund under the TKP2021 funding scheme [BME-NVA-02]; Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences; New National Excellence Program of the Ministry of Human Capacities [UNKP-21-5-BME-369]; NVIDIA Corporation via the Academic Hardware Grants Program; Hungarian National Research, Development and Innovation Office via NKFIH grant [OTKA FK142376] Funding text: Open Access funding enabled and organized by Projekt DEAL. The research reported in this paper is part of project no. BME-NVA-02, implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021 funding scheme. This paper was supported by the Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences, by the New National Excellence Program of the Ministry of Human Capacities (Ferenc Hegedus: UNKP-21-5-BME-369) and by the NVIDIA Corporation via the Academic Hardware Grants Program. The authors acknowledge the financial support of the Hungarian National Research, Development and Innovation Office via NKFIH grant OTKA FK142376. LA - English DB - MTMT ER - TY - CONF AU - Kalmár, Péter AU - Hegedűs, Ferenc AU - Klapcsik, Kálmán ED - Barabás, István TI - Akusztikusan gerjesztett buborékok felületi stabilitásának és felbomlásának vizsgálata T2 - OGÉT 2023 PB - Erdélyi Magyar Műszaki Tudományos Társaság Gépészeti Szakosztály C1 - Kolozsvár T3 - Nemzetközi Gépészeti Találkozó (OGÉT), ISSN 2068-1267 ; 31. PY - 2023 SP - 279 EP - 284 PG - 6 UR - https://m2.mtmt.hu/api/publication/34098073 ID - 34098073 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Kalmár, Péter AU - Hegedűs, Ferenc AU - Nagy, Dániel AU - Sándor, Levente AU - Klapcsik, Kálmán TI - Memory-friendly fixed-point iteration method for nonlinear surface mode oscillations of acoustically driven bubbles: from the perspective of high-performance GPU programming JF - ULTRASONICS SONOCHEMISTRY J2 - ULTRASON SONOCHEM VL - 99 PY - 2023 PG - 14 SN - 1350-4177 DO - 10.1016/j.ultsonch.2023.106546 UR - https://m2.mtmt.hu/api/publication/34097490 ID - 34097490 N1 - Funding Agency and Grant Number: National Research, Development and Innovation Fund [TKP-6-6/PALY-2021, TKP2021-NVA]; Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences; New National Excellence Program of the Ministry of Human Capacities [UNKP-225-BME-310, UNKP-222-I-BME-68]; NVIDIA Corporation via the Academic Hardware Grants Program; Hungarian National Research, Development and Innovation Office via NKFIH grant [OTKA FK-142376, PD-142254] Funding text: Project No. TKP-6-6/PALY-2021 has been implemented with the support provided by the Ministry of Culture and Innovation of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021-NVA funding scheme. This paper was also supported by the Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences, by the New National Excellence Program of the Ministry of Human Capacities (Kalman Klapcsik: UNKP-22-5-BME-310, Daniel Nagy: UNKP-22-2-I-BME-68) , and by the NVIDIA Corporation via the Academic Hardware Grants Program. The authors acknowledge the financial support of the Hungarian National Research, Development and Innovation Office via NKFIH grant OTKA FK-142376 (Ferenc Hegedus) and PD-142254 (Kalman Klapcsik) .; The authors also thank Stephen J. Shaw for the valuable personal discussions that influenced our thoughts while developing the proposed fixed-point iteration technique. LA - English DB - MTMT ER - TY - CONF AU - Nagy, Dániel AU - Hegedűs, Ferenc ED - Barabás, István TI - Az ALPACA szoftver validációja akusztikusan gerjesztett gázbuborékok szimulációjára T2 - OGÉT 2023 PB - Erdélyi Magyar Műszaki Tudományos Társaság Gépészeti Szakosztály C1 - Kolozsvár T3 - Nemzetközi Gépészeti Találkozó (OGÉT), ISSN 2068-1267 ; 31. PY - 2023 SP - 360 EP - 365 PG - 6 UR - https://m2.mtmt.hu/api/publication/34007434 ID - 34007434 AB - Akusztikusan gerjesztett gázbuborékok elsősorban a szonokémiában jelennek meg. A szonokémia lényege, kémia folyamatok kihozatalának a növelése ultrahangos gerjesztéssel. Akusztikusan gerjesztett buborékok CFD szimulációi új betekintést nyújthatnak a buborékok dinamikájába, például a buborékok felbomlásába. Ez a munka az ALPACA megoldó átfogó validációját mutatja be, a szimulációk eredményei a Keller-Miksis egyenlettel kerülnek összevetésre, amely egyetlen gömb alakú buborék oszcillációját írja le akusztikus térben. LA - Hungarian DB - MTMT ER - TY - CONF AU - Kozák, Áron AU - Hegedűs, Ferenc ED - Barabás, István TI - Buborékdinamika a hidrogéngyártásban: energetikai hatékonyság numerikus optimalizációja T2 - OGÉT 2023 PB - Erdélyi Magyar Műszaki Tudományos Társaság Gépészeti Szakosztály C1 - Kolozsvár T3 - Nemzetközi Gépészeti Találkozó (OGÉT), ISSN 2068-1267 ; 31. PY - 2023 SP - 312 EP - 316 PG - 5 UR - https://m2.mtmt.hu/api/publication/33807712 ID - 33807712 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Kalmár, Csanád AU - Hegedűs, Ferenc TI - Energy Dissipation and Chemical Yield of an Ultrasound Driven Single Bubble JF - PERIODICA POLYTECHNICA-MECHANICAL ENGINEERING J2 - PERIOD POLYTECH MECH ENG VL - 67 PY - 2023 IS - 1 SP - 44 EP - 50 PG - 7 SN - 0324-6051 DO - 10.3311/PPme.20360 UR - https://m2.mtmt.hu/api/publication/33797915 ID - 33797915 N1 - Funding Agency and Grant Number: Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund [TKP2021]; New National Excellence Program of the Ministry of Human Capacities [UNKP-21-5-BME-369] Funding text: The research reported in this paper is part of project no. BME-NVA-02, implemented with the support provided by the Ministry of Innovation and Technology of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021 funding scheme. The research was also supported by the New National Excellence Program of the Ministry of Human Capacities (project no. UNKP-21-5-BME-369). AB - A detailed parameter study is made of chemically active spherical bubbles. The calculations apply an up-to-date chemical mechanism for pure oxygen initial content, taking into account pressure dependency, duplication of chemical reactions, and proper third-body efficiency coefficients. The chemical yield is defined as the amount of substance at the maximum bubble radius, and the dissipated power is approached in a relatively new method. The parameter study focuses on finding the parameter combinations where maximum yield and maximum energy efficiency arise for various chemical species (O3, OH radical, H2 and H2O2). Results show that the locations of maximum yield and efficiency points differ significantly, depending on the chemical species. Usually, neither chemical yield nor efficiency values arise at maximum pressure amplitude and minimum driving frequency (as one would presumably expect). LA - English DB - MTMT ER - TY - JOUR AU - Klapcsik, Kálmán AU - Hegedűs, Ferenc TI - Numerical investigation of the translational motion of bubbles: The comparison of capabilities of the time-resolved and the time-averaged methods JF - ULTRASONICS SONOCHEMISTRY J2 - ULTRASON SONOCHEM VL - 92 PY - 2023 PG - 15 SN - 1350-4177 DO - 10.1016/j.ultsonch.2022.106253 UR - https://m2.mtmt.hu/api/publication/33635319 ID - 33635319 N1 - Export Date: 5 April 2023 CODEN: ULSOE Correspondence Address: Klapcsik, K.; Department of Hydrodynamic Systems, Müegyetem rkp. 3., Hungary; email: kklapcsik@hds.bme.hu LA - English DB - MTMT ER -