29 KB532 KB26 KB199920252008Dular, MatevžEberlinc, MatjažLapanja, BojanŠirok, Brane11 straništevilka:3letnik:54str. 159-169ISSN:0039-2480COBISSID:10523675URN:URN:NBN:SI:doc-K7WHSAAOenAssociation of Mechanical Engineers and Technicians of Slovenia et al.Zveza strojnih inženirjev in tehnikov Slovenije et al.Strojniški vestnikaksialni ventilatorjideformacijelopaticevizualizacijaInfluence of blade deformation on integral characteristic of axial flow fan|Axial flow fan blades deform during operation due to the various forces that act on them. That is why, we can ask ourselves about the influence of the blade deformation on the integral and local characteristics. In the paper, we present a study of influence of axial flow fan blade deformation. The paper deals with measurements of the blade deformation at the known integral working conditions. Results - deformations of fan blade tip were used for numerical study of the influence of the changed blade form on the fan's aerodynamic characteristic. Fan integral characteristics were measured in accordance with the ISO-DIS 5801:2006 standard and were carried out on the wind tunnel of the Hidria Institute Klima, Godovie. Other measurements of the blade deformation were done on the measuring station on the Faculty of Mechanical Engineering, University of Ljubljana, with the help of computer aided visualization. Deformations were measured in three working points, whichwere defined with fan integral parameters. Results of the measurements helped to determine modified form of the blade, which was then used for the numerical simulation for the same fan integral parameters. The study of deformation influence, based on the numerical simulation, was carried outLopatice turbinskega stroja se zaradi sil, ki delujejo nanje, deformirajo. Postavlja se vprašanje vpliva deformacij lopatic na integralne in lokalne aerodinamske značilke ventilatorjev. V prispevku je predstavljena študija vpliva deformacij lopatic na primeru aksialnega ventilatorja. Delo je usmerjeno v merjenje deformacij lopatic pri znanih celovitih obratovalnih pogojih. Rezultati - deformacije temenskega dela ventilatorske lopatice so uporabljeni v numerični študiji vpliva spremenjene oblike lopatice na aerodinamske značilke ventilatorja. Integralne značilke ventilatorja so bile izmerjene v skladu s standardom ISO-DIS 5801:1997 na vetrovniku Instituta KGH Godovič, merjenje deformacij lopatice pa je bilo opravljeno na merilni postaji na Fakulteti za strojništvo Univerze v Ljubljani s pomočjo računalniško podprte vizualizacije. Deformacije so bile merjene v treh obratovalnih režimih, ki so bili določeni s celovitimi parametri ventilatorja. Rezultati meritev so bili uporabljeni pri določitvi spremenjene oblike lopatice, ki je bila v nadaljevanju uporabljena pri numeričnem modeliranju za iste celovite obratovalne parametre ventilatorja. Izvedena je bila študija vpliva deformacij, ki je temeljila na numerični simulacijiTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo