@inproceedings{MTMT:31827513, title = {Experiment-Based Preliminary Design Guidelines for Consideration of Profile Vortex Shedding From Low-Speed Axial Fan Blades}, url = {https://m2.mtmt.hu/api/publication/31827513}, author = {Daku, Gábor and Vad, János}, booktitle = {Proceedings of the ASME Turbo Expo 2020}, doi = {10.1115/GT2020-14214}, unique-id = {31827513}, year = {2020}, pages = {1-13}, orcid-numbers = {Vad, János/0000-0001-5589-1603} } @CONFERENCE{MTMT:31800734, title = {Mérés-alapú előtervezési irányelvek axiális ventilátor-lapátokról leúszó örvények figyelembe vételére}, url = {https://m2.mtmt.hu/api/publication/31800734}, author = {Daku, Gábor and Vad, János}, booktitle = {XXVIII. Nemzetközi Gépészeti Konferencia – OGÉT 2020}, unique-id = {31800734}, year = {2020}, pages = {97-100}, orcid-numbers = {Vad, János/0000-0001-5589-1603} } @article{MTMT:3182339, title = {Algorithmic localisation of noise sources in the tip region of a low-speed axial flow fan}, url = {https://m2.mtmt.hu/api/publication/3182339}, author = {Tóth, Bence Mihály and Vad, János}, doi = {10.1016/j.jsv.2017.01.011}, journal-iso = {J SOUND VIB}, journal = {JOURNAL OF SOUND AND VIBRATION}, volume = {393}, unique-id = {3182339}, issn = {0022-460X}, year = {2017}, eissn = {1095-8568}, pages = {425-441}, orcid-numbers = {Tóth, Bence Mihály/0000-0001-9276-7409; Vad, János/0000-0001-5589-1603} } @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:3045464, title = {Fourier Analysis of Beamforming Data at the Tip of an Axial Fan Rotor}, url = {https://m2.mtmt.hu/api/publication/3045464}, author = {Tóth, Bence Mihály and Vad, János}, doi = {10.3311/PPme.8935}, journal-iso = {PERIOD POLYTECH MECH ENG}, journal = {PERIODICA POLYTECHNICA-MECHANICAL ENGINEERING}, volume = {60}, unique-id = {3045464}, issn = {0324-6051}, year = {2016}, eissn = {1587-379X}, pages = {152-158}, orcid-numbers = {Tóth, Bence Mihály/0000-0001-9276-7409; Vad, János/0000-0001-5589-1603} } @CONFERENCE{MTMT:2922194, title = {Spatially Resolved Acoustic And Aerodynamic Studies Upstream And Downstream Of An Industrial Axial Fan With Involvement Of The Phased Array Microphone Technique}, url = {https://m2.mtmt.hu/api/publication/2922194}, author = {Benedek, Tamás and Vad, János}, booktitle = {11th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2015}, unique-id = {2922194}, year = {2015}, orcid-numbers = {Benedek, Tamás/0000-0001-8057-3156; Vad, János/0000-0001-5589-1603} } @article{MTMT:2818814, title = {Beamforming Investigation of Dominant Counter-Rotating Open Rotor Tonal and Broadband Noise Sources}, url = {https://m2.mtmt.hu/api/publication/2818814}, author = {Horváth, Csaba}, doi = {10.2514/1.J053465}, journal-iso = {AIAA J}, journal = {AIAA JOURNAL}, volume = {53}, unique-id = {2818814}, issn = {0001-1452}, year = {2015}, eissn = {1533-385X}, pages = {1602-1611}, orcid-numbers = {Horváth, Csaba/0000-0002-5154-9760} } @inproceedings{MTMT:2697869, title = {Concerted aerodynamic and acoustic diagnostics of an axial flow industrial fan, involving the phased array microphone technique}, url = {https://m2.mtmt.hu/api/publication/2697869}, author = {Benedek, Tamás and Vad, János}, booktitle = {ASME Turbo Expo 2014}, doi = {10.1115/GT2014-25916}, unique-id = {2697869}, abstract = {The paper presents a methodology for on-site investigation of short-ducted industrial axial flow fans, as an easily realizable and effective means for concerted diagnostics on fan aerodynamics and acoustics along the rotor radius. The methodology relies on the accessibility of the fan from the upstream direction only. It involves experiments such as i) measurement of inlet axial velocity profile along the radius, combined with ii) beamforming studies using the Phased Array Microphone technique. The application of the methodology has been demonstrated in a case study of a ventilating fan. The semi-empirical data processing demonstrated significant changes of aerodynamic properties along the blade span. The acoustic studies regarded a frequency range being significant from the viewpoint of human audition. The phased array data have been processed and evaluated on the basis of two in-house developed beamforming codes, based on the Delay and Sum as well as the Rotating Source Identifier (ROSI) methods. The measurements revealed that the detected noise is dominated by rotating sources of broadband noise. By means of the ROSI code, pitchwise-resolved information has been obtained on the rotor noise. By such means, noise sources such as locally thickened suction side blade boundary layers and tip leakage flow have been identified. The spanwise variation of sound pressure has been compared with cascade loss indicators used in fan analysis and preliminary design, such as the total pressure loss coefficient and the Lieblein diffusion factor. The sound pressure has been found to increase locally with the total pressure loss and diffusion along the dominant portion of blade span, in the frequency bands being the most significant from the viewpoint of audibility of the noise generated by the fan.}, keywords = {DESIGN; Rotors; Diffuser; Acoustics , Axial flow , Microphones; axial flow fan; ROSI algorithm; phased array microphone; broadband noise sources; non-free vortex operation; Industrial ventilation}, year = {2014}, orcid-numbers = {Benedek, Tamás/0000-0001-8057-3156; Vad, János/0000-0001-5589-1603} } @article{MTMT:2591747, title = {Aerodynamic and aero-acoustic improvement of electric motor cooling equipment}, url = {https://m2.mtmt.hu/api/publication/2591747}, author = {Vad, János and Horváth, Csaba and Kovács, József Gábor}, doi = {10.1177/0957650913517678}, 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 = {228}, unique-id = {2591747}, issn = {0957-6509}, year = {2014}, eissn = {2041-2967}, pages = {300-316}, orcid-numbers = {Vad, János/0000-0001-5589-1603; Horváth, Csaba/0000-0002-5154-9760; Kovács, József Gábor/0000-0002-7391-7085} } @article{MTMT:1632989, title = {Effects of blade sweep on the performance characteristics of axial flow turbomachinery rotors}, url = {https://m2.mtmt.hu/api/publication/1632989}, author = {Vad, János and Kwedikha, A R A and Jaberg, H}, doi = {10.1243/09576509JPE249}, 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 = {220}, unique-id = {1632989}, issn = {0957-6509}, year = {2006}, eissn = {2041-2967}, pages = {737-749}, orcid-numbers = {Vad, János/0000-0001-5589-1603} } @article{MTMT:1632990, title = {Study of the aero-acoustic and aerodynamic effects of soft coating upon airfoil}, url = {https://m2.mtmt.hu/api/publication/1632990}, author = {Vad, János and Koscsó, G and Gutermuth, M and Kasza, Zs and Tábi, Tamás and Csörgő, Tibor}, doi = {10.1299/jsmec.49.648}, journal-iso = {JSME INT J C-MECH SY}, journal = {JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING}, volume = {49}, unique-id = {1632990}, issn = {1344-7653}, keywords = {Plastic filaments; Boundary layers; aerodynamics; Drag; WAKES; Noise abatement; flow generated noise; LDA measurements; wind tunnel tests; airfoil aerodynamics; fan noise; axial flow turbomachinery; Anemometers; Turbomachine blades; Airfoils; Lift; Wind tunnels; Laser Doppler anemometer}, year = {2006}, pages = {648-656}, orcid-numbers = {Vad, János/0000-0001-5589-1603; Tábi, Tamás/0000-0001-8273-1875; Csörgő, Tibor/0000-0002-7060-9853} }