2007
DOI: 10.1017/s0022112007005393
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The effects of gravity modulation on fluid mixing. Part 2. Stochastic modulation

Abstract: We study numerically the effects of zero-mean stochastic gravity modulation on the mixing characteristics of two interdiffusing miscible Boussinesq fluids initially separated by a thin diffusion layer. The gravity modulation has a Gaussian probability distribution and is characterized by an exponentially damped cosine autocorrelation function, i.e. $\langle g(t) g(t+\tau)\rangle/\langle g^{2}(t)\rangle\,{=}\,{\rm e}^{-\lambda \tau} \cos (\omega \tau)$. The associated power spectrum is a Lorentzian with peak at… Show more

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