Direct Numerical Simulation of Rayleigh-Taylor ... - ASC at Livermore

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Many models assume a constant ratio of kineticenergy to released potential energy.Potential energy δPis converted tokinetic energy K,which cascadesdown to smallscales where it isremoved byheat dissipation Ψ.Alpha Group derivedK z/δP = 12αK/δP rises steadily for Re > 10,000.WC-IWPCTM10-16
The mixing rate lags the entrainment rate whenthe flow enters the turbulent regime.Ξ=∞∫−∞∞∫−∞X pX p( X) dz( X )dz1 homogenized0 segregatedEver bigger blobs have to be broken down to ever finer scales.WC-IWPCTM10-17
Page 1 and 2: Direct Numerical Simulation ofRayle
Page 3 and 4: The Navier-Stokes equations have be
Page 5 and 6: Paris is the birthplace of the Navi
Page 7 and 8: Direct Numerical Simulation serves
Page 9 and 10: There is not much pure light fluid
Page 11 and 12: Outer-scale Reynolds number reaches
Page 13 and 14: Peak of energy spectrum follows a k
Page 15: In the self-similar regime, (dh/dt)
Page 19 and 20: Self-similarity gives: λ∼h 1/4
Page 21 and 22: Similar trends were observed in a p
Page 23: DNS of R-T instability at Re up to

Direct Numerical Simulation of Rayleigh-Taylor ... - ASC at Livermore

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