Turbulence-induced particle resonance before detachment from a flat surface
Abstract
Particle resuspension is a common phenomenon in nature and industries but not fully understood yet. In this work, we report direct experimental evidence for turbulence-induced resonance of wall-adhered particles before detachment. The recorded frequency is one or two orders of magnitude lower than that normally predicted by the Rock n' Roll model. The frequency ratio ϕ, between the natural frequency of particle adhesion and wall turbulence frequency, is found to be the key parameter that determines the occurrence of turbulence-induced resonance. This work may shed light on the resonance-enhanced cleaning of very small particles.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (4)
Zhikai You
Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Institute of Nuclear and New Energy Technology 1 , Tsinghua University, Beijing 100084,
Zhu Fang
Shuiqing Li
State Key Laboratory of Widegap Semiconductor Optoelectronic Materials and Technologies, Department of Electronic Engineering, Tsinghua University 1 , Beijing 100084,
Yiyang Zhang