Numerical simulation of drop impact and jet buckling problems using the eXtended Pom-Pom model

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• 作者：C.M. Oishi^a ; ^{cassiooishi@gmail.com} ; F.P. Martins^a ; ^{fpmartins@fct.unesp.br} ; M.F. Tomé ; ^b ; ^{murilo@icmc.usp.br} ; M.A. Alves^c ; ^{mmalves@fe.up.pt}
• 关键词：Finite difference method ; Free surface flows ; Implicit techniques ; Viscoelastic fluids ; Drop impact ; Jet buckling
• 刊名：Journal of Non-Newtonian Fluid Mechanics
• 出版年：2012
• 出版时间：2012
• 年：2012
• 卷：169-170
• 期：Complete
• 页码：91-103
• 全文大小：2641 K

文摘

This work presents numerical simulations of two fluid flow problems involving moving free surfaces: the impacting drop and fluid jet buckling. The viscoelastic model used in these simulations is the eXtended Pom-Pom (XPP) model. To validate the code, numerical predictions of the drop impact problem for Newtonian and Oldroyd-B fluids are presented and compared with other methods. In particular, a benchmark on numerical simulations for a XPP drop impacting on a rigid plate is performed for a wide range of the relevant parameters. Finally, to provide an additional application of free surface flows of XPP fluids, the viscous jet buckling problem is simulated and discussed.