Formation and Breakup of an Immiscible Compound Jet with Density or Viscosity Stratification
Formation and Breakup of an Immiscible Compound Jet with Density or Viscosity Stratification
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具有密度或粘度分层的不混溶复合射流的形成和破裂
DOI：
10.3390/app9224817
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
J. Wells
中科院分区：
文献类型：
--
作者：
Kunal Bhagat;Truong V. Vu;J. Wells
本文对不同密度和粘度比的轴对称复合射流从共轴喷嘴喷入另一种不混溶的同向流动流体中破碎形成复合液滴的过程进行了数值研究。流体被假定为牛顿和不可压缩的和重力被忽略为简单。采用有限差分法结合波前跟踪法对复合射流的演化和破碎过程进行了跟踪。数值结果显示了密度和粘度比对复合射流从滴状向喷射状过渡的影响。内-外流体和中间-外流体的密度比对复合射流破碎长度、液滴直径和液滴形成时间的影响大于相应的粘度比。在高密度和粘度比下，分别由于高惯性和粘性力，液滴形成更加混乱，并且大多数形成多核液滴。
Formation of compound drops by breakup of an axisymmetric compound jet injected from a coaxial nozzle into another immiscible coflowing fluid, at various density and viscosity ratios, is numerically investigated. The fluids are assumed to be Newtonian and incompressible and gravity is neglected for simplicity. A Finite Difference Method with Front Tracking is used to track the evolution and breakup of the compound jet. The outcomes of our numerical results show how density and viscosity ratios affect the compound jet’s transition from dripping to jetting mode. The density ratios of inner-to-outer and intermediate-to-outer fluids affect compound jet breakup length, drop diameter and drop formation time more than comparable viscosity ratios. At high density and viscosity ratios, due to high inertia and viscous force respectively, the drop formation is more chaotic and mostly multi-core drops are formed.
领跑者 - 知识先驱 - 展望利用天然丝再生活组织的人造血管的实际应用
DOI：
--
发表时间：
2012
期刊：
三菱UFJビジネススクエア・SQUET
影响因子：
--
作者：
朝倉哲郎
通讯作者：
朝倉哲郎