Measured and non-free vortex design results of axial flow fans

• Published in: Journal of mechanical science and technology Vol. 22; no. 10; pp. 1902 - 1907
• Main Authors: Szlivka, Ferenc, Molnár, Ildikó
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Heidelberg Korean Society of Mechanical Engineers 01.10.2008; Springer Nature B.V; 대한기계학회
• Subjects: Applied sciences; Axial flow; Blades; Control; Design engineering; Dynamical Systems; Engineering; Exact sciences and technology; Fluid dynamics; Fluid flow; Impellers; Industrial and Production Engineering; Mechanical Engineering; Mechanical engineering. Machine design; Pump and compressors (turbocompressors, fans, etc.); Pumps; Sizing; Spatial distribution; Studies; Vibration; 기계공학; Axial flow fan; Pressure field; Dimensioning; Irrotational flow; Static pressure; Cooling; Axial fan; Pressure drop; Pressure loss; Axial flow; Turbine wheel
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-008-0730-0

The research is about the determination of developing flow pattern in the axial flow fan impeller. A measuring method and a sizing method of axial flow fans used in a research project have been studied. In this way it has been determined the spatial distribution of static pressure directly behind the impeller as well as the spatial distribution and direction of total pressure in a fixed system to the blade channel. There is an opportunity to identify the high loss region in the impeller: to determine the pressure loss and the hydraulic efficiency at each point. The article shows the results of comparison between the measurement data and the sizing results in the case of one in the agricultural-field utilized cooling fan. The impeller was designed by the help of the fore slanted blades in circumference direction as well as the non-free vortex theory. The basic theories of the design method of the blades and the realization of measurement results are analyzed, too.