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contributor authorBaoshan Zhu
contributor authorJun Lei
contributor authorShuliang Cao
date accessioned2017-05-09T00:24:01Z
date available2017-05-09T00:24:01Z
date copyrightOctober, 2007
date issued2007
identifier issn0098-2202
identifier otherJFEGA4-27274#1297_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/135916
description abstractIn this paper, vortex-shedding patterns and lock-in characteristics that vortex-shedding frequency synchronizes with the natural frequency of a thin cambered blade were numerically investigated. The numerical simulation was based on solving the vorticity-stream function equations with the fourth-order Runge–Kutta scheme in time and the Chakravaythy–Oscher total variation diminishing (TVD) scheme was used to discretize the convective term. The vortex-shedding patterns for different blade attack angles were simulated. In order to confirm whether the vortex shedding would induce blade self-oscillation, numerical simulation was also carried out for blade in a forced oscillation. By changing the pitching frequency and amplitude, the occurrence of lock-in at certain attack angles was determined. Inside the lock-in zone, phase differences between the blade’s pitching displacement and the torque acting on the blade were used to infer the probability of the blade self-oscillation.
publisherThe American Society of Mechanical Engineers (ASME)
titleNumerical Simulation of Vortex Shedding and Lock-in Characteristics for a Thin Cambered Blade
typeJournal Paper
journal volume129
journal issue10
journal titleJournal of Fluids Engineering
identifier doi10.1115/1.2776964
journal fristpage1297
journal lastpage1305
identifier eissn1528-901X
keywordsLocks (Waterways)
keywordsBlades
keywordsVortex shedding
keywordsEquations
keywordsOscillations
keywordsFlow (Dynamics) AND Computer simulation
treeJournal of Fluids Engineering:;2007:;volume( 129 ):;issue: 010
contenttypeFulltext


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