Chin. Phys. Lett.  2000, Vol. 17 Issue (8): 580-582    DOI:
Original Articles |
Internal Subharmonic Resonance in Faraday Experiment
WANG Xin-Long1,2;CHEN Yi-Huang2;WEI Rong-Jue1,2
1State Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093 2Department of Electronic Science and Engineering, Nanjing University, Nanjing 210093
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WANG Xin-Long, CHEN Yi-Huang, WEI Rong-Jue 2000 Chin. Phys. Lett. 17 580-582
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Abstract The classical Faraday experiment is a tractable problem in nonlinear physics, and its rich spectrum of nonlinear phenomena has made it a prototype in studying nonlinear wave dynamics in general. Here we report the observation of a new type of subharmonic resonances which occurs at some smaller fractional frequencies, such as ν/3 , ν/4, and ν/6, where ν is the forcing frequency. As a result of these resonances, the lower-order surface-wave modes whose eigenfrequencies are close to the fractional frequencies participate into the wave motions. Our theory involving quadratically nonlinear mode couplings shows that an already excited mode itself can act as a parametric source on the lower-order primary modes, thus leading to the cascading subharmonic resonances.

Keywords: 43.25.Gf      43.35.Pt      47.20.Ky      47.35.+i     
Published: 01 August 2000
PACS:  43.25.Gf (Standing waves; resonance)  
  43.35.Pt (Surface waves in solids and liquids)  
  47.20.Ky (Nonlinearity, bifurcation, and symmetry breaking)  
  47.35.+i  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2000/V17/I8/0580
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