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Turbulent Suppression Of Spinodal Decomposition, D. J. Pine, Nalini Easwar, James V. Maher, W. I. Goldburg
Turbulent Suppression Of Spinodal Decomposition, D. J. Pine, Nalini Easwar, James V. Maher, W. I. Goldburg
Physics: Faculty Publications
Light scattering experiments reveal a strong suppression of phase separation near the critical point of a vigorously stirred binary liquid mixture. For stirring Reynolds numbers R ranging from 6.0 × 103 to 4.5 × 103, the apparent critical temperature is depressed by ∼1 mK to ∼50 mK. This temperature depression ΔTc can be fitted to a power law ΔTc∼Rλ where λ∼2. The magnitude of ΔTc is consistent with simple models which attribute the effect to the suppression of composition fluctuations by shear; however, these models predict λ≃0.80 in contrast to the observed value …