@article{MTMT:33570449,
	title = {The blade shape optimization of a low-pressure axial fan using the surrogate-based multi-objective optimization method},
	url = {https://m2.mtmt.hu/api/publication/33570449},
	author = {Kong, Chuang and Wang, Meng and Jin, Tao and Liu, Shaoliang},
	doi = {10.1007/s12206-022-1219-y},
	journal-iso = {J MECH SCI TECHNOL},
	journal = {JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY},
	volume = {37},
	unique-id = {33570449},
	issn = {1738-494X},
	year = {2023},
	eissn = {1976-3824},
	pages = {179-189}
}

@article{MTMT:34488331,
	title = {Performance and unsteady flow characteristic of forward-curved impeller with different blade inlet swept angles in a pump as turbine},
	url = {https://m2.mtmt.hu/api/publication/34488331},
	author = {Wang, Tao and Yu, He and Xiang, Ru and Chen, XiaoMing and Zhang, Xiang},
	doi = {10.1016/j.energy.2023.128890},
	journal-iso = {ENERGY},
	journal = {ENERGY},
	volume = {282},
	unique-id = {34488331},
	issn = {0360-5442},
	year = {2023},
	eissn = {1873-6785},
	orcid-numbers = {Wang, Tao/0000-0001-7162-1582}
}

@article{MTMT:32979075,
	title = {Free and Non-Free Vortex Design for Axial Fans with Circumferential Sweep through CFD Techniques},
	url = {https://m2.mtmt.hu/api/publication/32979075},
	author = {Arispe Angulo, T. M. and Ramirez Camacho, R. G. and de Oliveira, W. and da Silva, E. R. and Nino Del Rio, G. E.},
	doi = {10.47176/jafm.15.04.33209},
	journal-iso = {J APPL FLUID MECH},
	journal = {JOURNAL OF APPLIED FLUID MECHANICS},
	volume = {15},
	unique-id = {32979075},
	issn = {1735-3572},
	abstract = {The sound generated by axial flow fans has become increasingly important in several industrial areas. These devices represent considerable noise sources that must be considered from the design stage. The scope of this research work is to present an axial fan design methodology based on the theory of the wing lift and to compare the aerodynamic and aeroacoustics behavior with the free vortex and the non-free vortex conditions. The effect of forward circumferential sweep on the rotor blades is analyzed in both conditions, which consists of a displacement in the tangential direction in the direction of rotor rotation. A cubic polynomial function is proposed for the construction of the blade geometry with circumferential sweep. It defines the center line of the blade and it is taken at 50% of the leading edge of each blade profile. The methodology for analyzing aeroacoustics behavior in fans is based on the integration of Computational Aeroacoustics and Computational Fluid Dynamics in order to analyze aerodynamic behavior, sound power level and sound pressure level at the preliminary design stage. It was verified that although both rotors present a similar aerodynamic behavior (the NFV rotor has a slightly lower performance), according to the analysis of local sound sources, the NFV rotor presents a slight decrease in the sound sources. It was also verified that the NFV rotor presents 2.2 dB less in sound pressure level than the FV rotor.},
	keywords = {DESIGN; axial flow fan; CFD ANALYSIS; Aeroacoustics; computational fluid dynamic; Circumferential sweep; Free Vortex; Non-Free Vortex},
	year = {2022},
	eissn = {1735-3645},
	pages = {1017-1034}
}

@article{MTMT:33092669,
	title = {Models for Estimation of Lift and Drag Coefficients for Low-Reynolds-Number Cambered Plates},
	url = {https://m2.mtmt.hu/api/publication/33092669},
	author = {Balla, Esztella Éva and Vad, János},
	doi = {10.2514/1.J061579},
	journal-iso = {AIAA J},
	journal = {AIAA JOURNAL},
	volume = {60},
	unique-id = {33092669},
	issn = {0001-1452},
	abstract = {Empirical models capable of predicting the lift and drag coefficients of circular-arc cambered plate blades are presented, together with the detailed documentation of the related wind-tunnel technique and data evaluation. The blade profiles are equipped with rounded leading and trailing edges. The empirical models offer an easy-to-use tool for preliminary design of low-solidity low-speed blade cascades. By means of the models, the lift-coefficient range of 0-1.3 is covered, associated with the drag coefficient varying between 0.02 and 0.14. The validity ranges of the empirical models are as follows: Reynolds-number between 4x104 and 1.4x105, relative camber ranging from 0 to 8%, and angle of attack between 0 and 8 deg. The force coefficients are expressed as a function of relative camber, angle of attack, and Reynolds-number. The models assume linear relationships between the Reynolds-number and the force coefficients, as inspired by the literature and justified by statistical means. The dependence of the force coefficients on the angle of attack and the relative camber is expressed by incorporating second-order polynomials. The trends of force changes with Reynolds-number are analyzed. The cases of apparently extraordinary trends in the Reynolds-number dependence (i.e., increasing drag and decreasing lift with increasing Reynolds-number) are discussed in detail. A method for the determination of the confidence intervals related to the models is presented, and a detailed uncertainty analysis is provided. On this basis, the relative errors of the force coefficients can be quantified in a case-specific, empirical manner.},
	year = {2022},
	eissn = {1533-385X},
	pages = {6620-6632},
	orcid-numbers = {Balla, Esztella Éva/0000-0001-6617-4474; Vad, János/0000-0001-5589-1603}
}

@article{MTMT:32396342,
	title = {Structure and Topology Analysis of Separated Vortex in Forward-Swept Blade},
	url = {https://m2.mtmt.hu/api/publication/32396342},
	author = {Liang, D. and Li, Y. and Zhou, Z. and Wisniewski, P. and Dykas, S.},
	doi = {10.3389/fenrg.2021.693596},
	journal-iso = {FRONT ENERGY RES},
	journal = {FRONTIERS IN ENERGY RESEARCH},
	volume = {9},
	unique-id = {32396342},
	issn = {2296-598X},
	abstract = {Flow separation commonly affects the stability of turbomachines, especially under low-flowrate conditions. Compared with conventional blades, a forward-swept blade is more efficient at high flowrates. However, experiments and numerical simulations show that a forward-swept blade produces an unstable region under low flowrate. In this paper, the topological analysis is used to analyze the structure and size of flow separation in forward swept blades. Three-dimensional structure and formation mechanism of vortices in forward-swept blades are analyzed using the cross-section flow pattern method. For forward-swept blades, flow separation mainly occurs at the blade tip and corner, accompanied by clear velocity fluctuations, the break-up of shed vortices, and diffusion. With decreasing flowrate, the shedding vortices move forward and the speed of vortex annihilation gradually decreases. In addition, the number of singularities in the rotor passage increases with the decrease of flow rate, and the region affected by shedding vortex increases. The rotating direction of internal vortex in turbomachinery is fixed. The pressure surface, passage vortex, and concentrated shedding vortex were found to rotate clockwise, whereas the suction surface, corner vortex, and shedding vortex rotate in a counterclockwise direction.},
	keywords = {Flow separation; TOPOLOGICAL ANALYSIS; vortex structure; forward-swept blade; limit streamline},
	year = {2021},
	eissn = {2296-598X}
}

@article{MTMT:31793824,
	title = {A numerical study of performance of the small-size uav pushing tandem propeller with joined blades},
	url = {https://m2.mtmt.hu/api/publication/31793824},
	author = {Kulyk, Mykola and Kirchu, Fedir and Hanesh, Hussein},
	doi = {10.15587/1729-4061.2020.199486},
	journal-iso = {VOSTOCHNO-EVROPEISKII ZHURNAL PEREDOVYKH TEKHNOLOGII / EAST-EUR J ENTERPRISE TECH},
	journal = {VOSTOCHNO-EVROPEISKII ZHURNAL PEREDOVYKH TEKHNOLOGII / EASTERN- EUROPEAN JOURNAL OF ENTERPRISE TECHNOLOGIES},
	volume = {2},
	unique-id = {31793824},
	issn = {1729-3774},
	year = {2020},
	eissn = {1729-4061},
	pages = {40-48}
}

@inproceedings{MTMT:31052304,
	title = {A new practical approach to the design of industrial axial fans: part II - forward-swept blades with low hub-to-tip ratio},
	url = {https://m2.mtmt.hu/api/publication/31052304},
	author = {Masi, Massimo and Lazzaretto, Andrea},
	booktitle = {Proceedings of the ASME Turbo Expo: Turbomachinery Technical Conference and Exposition - 2019},
	doi = {10.1115/GT2019-91532},
	unique-id = {31052304},
	abstract = {The authors previously suggested a simple method to design forward-swept axial-flow rotors with blades having low hub-to tip and high aspect ratios. This design method was demonstrated experimentally to increase the aeraulic performance of a small tube-axial fan having unswept blades and 0.4 hub-to-tip ratio, while maintaining the efficiency in the entire operation range. However; the method has not yet been assessed by experimental tests of lower hub-to-tip ratio designs where the strong three-dimensionality of the actual blade passage flow could compromise its validity. This assessment is the object of the present paper, which is aimed at examining the practical effectiveness of the forward-swept blade design method for low hub-to-tip ratio tube-axial fans. To this end, past results of the authors' work are supported here by the design of a new 315mm forward-swept industrial fan derived from the 0.28 hub-to-tip ratio design presented in Part I of this paper. The ISO-5801 aerodynamic performance tests at blade Reynolds number of approximately 60,000 show that the method permits the design offorward-swept industrialfans capable ofpressure coefficients in excess of 0.02 at aeraulic efficiency well above 60%, in a wide range of flow rate coefficients and blade positioning angles. Moreover, the method allows obtaining a pressure coefficient equal to 0.021 at 70% maximum efficiency, with an improvement of both the stall margin and stable operation pressure curve of the unswept design, if applied in combination with the complete fan design method presented in Part I of this paper.},
	keywords = {Axial-flow fan design; blade forward sweep; sweep theory},
	year = {2019}
}

@mastersthesis{MTMT:3412246,
	title = {Axiális átömlésű ventilátor mikrofontömbös diagnosztikája},
	url = {https://m2.mtmt.hu/api/publication/3412246},
	author = {Benedek, Tamás},
	publisher = {Budapest University of Technology and Economics},
	unique-id = {3412246},
	year = {2018},
	orcid-numbers = {Benedek, Tamás/0000-0001-8057-3156}
}

@CONFERENCE{MTMT:27675577,
	title = {EFFECTIVENESS OF BLADE FORWARD SWEEP IN A SMALL INDUSTRIAL TUBE-AXIAL FAN},
	url = {https://m2.mtmt.hu/api/publication/27675577},
	author = {M, Masi and A, Lazaretto and S, Castegnaro},
	booktitle = {FAN 2018 International Conference of Fan Noise, Aerodynamics, Applications and Systems},
	unique-id = {27675577},
	year = {2018},
	pages = {1-12}
}

@article{MTMT:26312721,
	title = {Experimental investigation of an actively controlled automotive cooling fan using steady air injection in the leakage gap},
	url = {https://m2.mtmt.hu/api/publication/26312721},
	author = {Azzam, Tarik and Paridaens, Richard and Ravelet, Florent and Khelladi, Sofiane and Oualli, Hamid and Bakir, Farid},
	doi = {10.1177/0957650916688120},
	journal-iso = {P I MECH ENG A-J POW},
	journal = {PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY},
	volume = {231},
	unique-id = {26312721},
	issn = {0957-6509},
	year = {2017},
	eissn = {2041-2967},
	pages = {59-67}
}

@article{MTMT:26742606,
	title = {Investigation of aerodynamic performance of small axial flow fan coupled with deflecting ring},
	url = {https://m2.mtmt.hu/api/publication/26742606},
	author = {Huang, Haihong and Wang, Zheng and Liu, Zhifeng},
	doi = {10.1177/0954406215622792},
	journal-iso = {P I MECH ENG C-J MEC},
	journal = {PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE},
	volume = {231},
	unique-id = {26742606},
	issn = {0954-4062},
	year = {2017},
	eissn = {2041-2983},
	pages = {1839-1848}
}

@article{MTMT:2922231,
	title = {An industrial on-site methodology for combined acoustic-aerodynamic diagnostics of axial fans, involving the Phased Array Microphone technique},
	url = {https://m2.mtmt.hu/api/publication/2922231},
	author = {Benedek, Tamás and Vad, János},
	doi = {10.1177/1475472X16630849},
	journal-iso = {INT J AEROACOUST},
	journal = {INTERNATIONAL JOURNAL OF AEROACOUSTICS},
	volume = {15},
	unique-id = {2922231},
	issn = {1475-472X},
	year = {2016},
	eissn = {2048-4003},
	pages = {81-102},
	orcid-numbers = {Benedek, Tamás/0000-0001-8057-3156; Vad, János/0000-0001-5589-1603}
}

@article{MTMT:26210311,
	title = {Forward sweep to improve the efficiency of rotor-only tube-axial fans with controlled vortex design blades},
	url = {https://m2.mtmt.hu/api/publication/26210311},
	author = {Masi, Massimo and Castegnaro, Stefano and Lazzaretto, Andrea},
	doi = {10.1177/0957650915625520},
	journal-iso = {P I MECH ENG A-J POW},
	journal = {PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY},
	volume = {230},
	unique-id = {26210311},
	issn = {0957-6509},
	year = {2016},
	eissn = {2041-2967},
	pages = {512-520}
}

@inproceedings{MTMT:24971152,
	title = {A Simplified Theory to Justify Forward Sweep in Low Hub-to-Tip Ratio Axial Fan},
	url = {https://m2.mtmt.hu/api/publication/24971152},
	author = {Masi, Massimo and Lazzaretto, Andrea},
	booktitle = {ASME Turbo Expo 2015: Turbine Technical Conference and Exposition},
	doi = {10.1115/GT2015-43029},
	unique-id = {24971152},
	year = {2015}
}