Investigation of Flow Behavior around Corotating Blades in a Double-Spindle Lawn Mower Deck

When the airflow patterns inside a lawn mower deck are understood, the deck can be redesigned to be efficient and have an increased cutting ability. To learn more, a combination of computational and experimental studies was performed to investigate the effects of blade and housing designs on a flow...

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Bibliographic Details
Published in:International Journal of Rotating Machinery 2005-01, Vol.2005 (1), p.77-89
Main Authors: Chon, W., Amano, R. S.
Format: Article
Language:English
Subjects:
computational fluid dynamics
experimental investigation
laser Doppler velocimetry
lawn mower
rotating blades
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Summary:When the airflow patterns inside a lawn mower deck are understood, the deck can be redesigned to be efficient and have an increased cutting ability. To learn more, a combination of computational and experimental studies was performed to investigate the effects of blade and housing designs on a flow pattern inside a 1.1mwide corotating double-spindle lawn mower deck with side discharge. For the experimental portion of the study, air velocities inside the deck were measured using a laser Doppler velocimetry (LDV) system. A high-speed video camera was used to observe the flow pattern. Furthermore, noise levels were measured using a sound level meter. For the computational fluid dynamics (CFD) work, several arbitrary radial sections of a two-dimensional blade were selected to study flow computations. A three-dimensional, full deck model was also developed for realistic flow analysis. The computational results were then compared with the experimental results.
ISSN:1023-621X
1542-3034
1563-5090
DOI:10.1155/IJRM.2005.77