Modulated convection at high frequencies and large modulation amplitudes.
01 January 1987
Modulated Rayleigh-Benard convection is analyzed for high frequencies and large modulation amplitudes. The linear theory of Gershuni and Zhukhovitskii is generalized to the nonlinear domain, and a subcritical bifurcation to convection is found in agreement with the experiments of Niemela and Donnelly. The crossover between the high-frequency ("Stokes layer") regime and the low-frequency regime studied previously, is analyzed.