The effect of ablation on the nonlinear spike growth of single-mode ablative Rayleigh–Taylor instability(RTI)is studied by two-dimensional numerical simulations.It is shown that the ablation can reduce the quasi-cons...The effect of ablation on the nonlinear spike growth of single-mode ablative Rayleigh–Taylor instability(RTI)is studied by two-dimensional numerical simulations.It is shown that the ablation can reduce the quasi-constant velocity and significantly suppress the reacceleration of the spike in the nonlinear phase.It is also shown that the spike growth can affect the ablation-generated vorticity inside the bubble,which further affects the nonlinear bubble acceleration.The vorticity evolution is found to be correlated with the mixing width(i.e.,the sum of the bubble and spike growths)for a given wave number and ablation velocity.By considering the effects of mass ablation and vorticity,an analytical model for the nonlinear bubble and spike growth of single-mode ablative RTI is developed in this study.It is found that the nonlinear growth of the mixing width,induced by the single mode,is dominated by the bubble growth for small-scale ablative RTI,whereas it is dominated by the spike growth for classical RTI.展开更多
Vesicular delivery systems have gainedmuch attention as pharmaceutical entities since their discovery.Niosomes occupy the general structure of bilayer vesicles,having a hydrophilic core shielded from one or multiple h...Vesicular delivery systems have gainedmuch attention as pharmaceutical entities since their discovery.Niosomes occupy the general structure of bilayer vesicles,having a hydrophilic core shielded from one or multiple hydrophobic lipid bilayer.This unique structure enables them to both accommodate oilsoluble compounds as well as to encapsulate water-soluble drugs[1].The anticancer effects of tocotrienol were first discovered in the early 1990s when Nesaretnam et al.reported that palm oil stripped of vitamin E-promoted tumorigenesis in rats[2].展开更多
文摘The effect of ablation on the nonlinear spike growth of single-mode ablative Rayleigh–Taylor instability(RTI)is studied by two-dimensional numerical simulations.It is shown that the ablation can reduce the quasi-constant velocity and significantly suppress the reacceleration of the spike in the nonlinear phase.It is also shown that the spike growth can affect the ablation-generated vorticity inside the bubble,which further affects the nonlinear bubble acceleration.The vorticity evolution is found to be correlated with the mixing width(i.e.,the sum of the bubble and spike growths)for a given wave number and ablation velocity.By considering the effects of mass ablation and vorticity,an analytical model for the nonlinear bubble and spike growth of single-mode ablative RTI is developed in this study.It is found that the nonlinear growth of the mixing width,induced by the single mode,is dominated by the bubble growth for small-scale ablative RTI,whereas it is dominated by the spike growth for classical RTI.
文摘Vesicular delivery systems have gainedmuch attention as pharmaceutical entities since their discovery.Niosomes occupy the general structure of bilayer vesicles,having a hydrophilic core shielded from one or multiple hydrophobic lipid bilayer.This unique structure enables them to both accommodate oilsoluble compounds as well as to encapsulate water-soluble drugs[1].The anticancer effects of tocotrienol were first discovered in the early 1990s when Nesaretnam et al.reported that palm oil stripped of vitamin E-promoted tumorigenesis in rats[2].
