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Details of Grant 

EPSRC Reference: GR/J14707/01
Title: ANTI-STALL DEVICES FOR INDUSTRIAL FANS
Principal Investigator: Elder, Professor R
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Woods of Colchester Ltd
Department: Sch of Engineering
Organisation: Cranfield University
Scheme: Standard Research (Pre-FEC)
Starts: 01 March 1994 Ends: 28 February 1997 Value (£): 120,375
EPSRC Research Topic Classifications:
Aerodynamics
EPSRC Industrial Sector Classifications:
Energy
Related Grants:
Panel History:  
Summary on Grant Application Form
Although some references on the subject go back forty years, activity in stall suppression by the use of 'treatment or modifications to the outer casing over the rotor (and in some cases to the inner rotating hub under the stators) has been significant on aeroengine type axial compressors since around 1970, but the type advocated for industrial fans only since around 1982 and then primarily from Japan and the USSR. The aero engine work has been concentrated on rather simple designs of 'blind' slots over the rotor blade tips which have unfortunately, almost without exception incurred some loss of efficiency, usually equivalent to about 3 or 4% for the treated stage. For industrial fans the use of larger devices (treatments), relative to the blade dimensions, have been reported in the literature and studied at Cranfield for fans of aero-engine loading. The results have been highly successful and Woods of Colchester are now interested in a study with Cranfield which will investigate the advantages of stall suppression devices on industrial fans. The improvement in unstalled flow and reduction in blade vibration stresses are both of interest to this investigation. In support of this work Woods are prepared to provide both the fan test facility and manufacture test parts for the study.
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Organisation Website: http://www.cranfield.ac.uk