Experimental and numerical analysis of a crossflow fan
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Authors
Cheng, Wee Teck
Subjects
Advisors
Hobson, Garth V.
Date of Issue
2003-12
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
An auto vehicle that can take off and land vertically is envisioned to solve current and future problems of road congestion by utilizing the enormous air space above us. Crossflow Fan has been looked into in the past to serve this purpose but not sufficient to justify its capability to provide enough vertical thrust with limited power and space. Hence more in depth study is required to further improve the thrust efficiency and thrust to power ratio to a point where this thrust producing method is viable. A 12-inch diameter, 1.5-inch span, 30-blade Crossflow fan test apparatus was constructed and tested using an existing Turbine Test Rig as a power source. Instrumentation was installed and a data acquisition program was developed to measure the performance of the Cross Flow Fan. Performance measurement was taken over a speed range of 1,000 to 6,000 RPM. An experiment was conducted with the Cross Flow Fan to determine among other things the stalling characteristics of the compressor. Performance and flow visualization results will then be compared to predictions obtained from 2-D numerical simulation conducted using Flo++, a commercial PC-based computational fluid dynamics software package by Softflo.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
xiv, 85 p. : ill. (some col.) ;
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Approved for public release; distribution is unlimited.
Approved for public release; distribution is unlimited.
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Copyright is reserved by the copyright owner.