TY  - JOUR
AU  - Vad, János
TI  - Aerodynamic effects of blade sweep and skew in low-speed axial flow rotors at the design flow rate: an overview
JF  - PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY
J2  - P I MECH ENG A-J POW
VL  - 222
PY  - 2008
IS  - 1
SP  - 69
EP  - 85
PG  - 17
SN  - 0957-6509
DO  - 10.1243/09576509JPE471
UR  - https://m2.mtmt.hu/api/publication/1632987
ID  - 1632987
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Vad, János
AU  - R A Kwedikha, Ali
AU  - Horváth, Csaba
AU  - Balczó, Márton
AU  - Lohász, Máté Márton
AU  - Régert, Tamás
TI  - Aerodynamic Effects of Forward Blade Skew in Axial Flow Rotors of Controlled Vortex Design
JF  - PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY
J2  - P I MECH ENG A-J POW
VL  - 221
PY  - 2007
IS  - 7
SP  - 1011
EP  - 1023
PG  - 13
SN  - 0957-6509
DO  - 10.1243/09576509JPE420
UR  - https://m2.mtmt.hu/api/publication/1633032
ID  - 1633032
AB  - Comparative studies have been carried out on two axial flow fan rotors of controlled vortex design (CVD), at their design flowrate, in order to investigate the effects of circumferential forward skew on blade aerodynamics. The studies were based on computational fluid dynamics (CFD), validated on the basis of global performance and hot wire flow field measurements. The computations indicated that the forward-skewed blade tip modifies the rotor inlet condition along the entire span, due to its protrusion to the relative inlet flow field. This leads to the rearrangement of spanwise blade load distribution, increase of losses along the dominant part of span, and converts the prescribed spanwise blade circulation distribution towards a free vortex flowpattern.Due to the above, reduction in both total pressure rise and efficiency was established. By moderation of the radial outward flowon the suction side, being especially significant for nonfree vortex blading, forward sweep was found to be particularly useful for potential reduction of near-tip loss in CVD rotors. Application of reliable CFD-based design systems was recommended for systematic consideration and control of both load- and loss-modifying effects due to nonradial blade stacking.
LA  - English
DB  - MTMT
ER  -