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Abstract: The dynamics characteristics of dual bluff body vortex and
the best structure of dual bluff body vortex improving fluid oscillation
are studied. The experiment educes the result of different structure of
dual bluff body Strouhal number curve; the result indicates dual bluff
body’s Stroutal number is constant. The experiment on f 50 flowmeter
proves: Dual bluffbody can receive idea vortex superpose on some
condition and improve fluid oscillation. On axis symmetry point, the wave
of fluid oscillation have same amplitude and 180° angle discrepancy. A
new type vortex flowmeter by using the dual bluff body and differential
sensor technology is developed.
Key words: Vortex flowmeter Dual bluff body vortex Fluid
oscillation
CLC No: TB126
国家自然科学基金(50175097)、教育部留学回国人员科研启动基金和浙江省自然科学基金资助项目(599086). Received
20010918, received in revised form 20011225
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