Aerodynamic and acoustic integral characteristics of porous rotors
Benedik, Gašper (Author), Širok, Brane (Author), Eberlinc, Matjaž (Author), Hočevar, Marko (Author)

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This paper describes porous rotors manufactured from open cell aluminium foam. Rotor construction and theoretical description of fluid flow through rotating porous material are presented. Nine porous rotors made of materials with three different average pore sizes, with or without inducer, three rotor heights and two inlet diameters were selected and compared to a classical rotor with blades. Measurements involved two parts, measurement of pressure drop on non-rotating rotors while integral flow characteristics were measured on rotating rotors. Pressure drops for selected rotors agree well with theoretically calculated values based on Darcy-Forchheimer equation and Ergun equation. Measurements of integral aerodynamic and acoustic characteristics for selected rotors are presented. At low volume flow rates porous rotors have lower aerodynamic efficiency, comparable dimensionless pressure and lower noise compared to classical rotors with blades.

Keywords:rotors, porous material, fluid flow
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Number of pages:str. 243-256
Numbering:Vol. 75, no. 4
ISSN on article:0015-7899
DOI:10.1007/s10010-011-0147-2 Link is opened in a new window
COBISS.SI-ID:12060955 Link is opened in a new window
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Record is a part of a journal

Title:Forschung im Ingenieurwesen
Shortened title:Forsch. Ing.wes.
Publisher:VDI-Verlag GmbH
COBISS.SI-ID:9398021 This link opens in a new window

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