The motion of a bubble rising through viscoelastic polymeric liquids
نویسندگان
چکیده
منابع مشابه
Numerical simulation of a rising bubble in viscoelastic fluids
In this paper we discuss simulation techniques for a rising bubble in viscoelastic fluids via numerical methods based on high order FEM. A level set approach based on the work in [9] is used for interface tracking between the bubble and the surrounding fluid. The two matters obey the Newtonian and the Oldroyd-B constitutive law in the case of a viscoelastic fluid while the flow model is given b...
متن کاملNumerical Study of a Gas Bubble Rising Through Stagnant Fluid
It is well known that the environment degradation has come along the time positioning as one of the main problems from modern world. Among several questions of the environmental interest the methane bubble rise in the lakes can be emphasized, from the anoxic sediment in the bottom of lake until water interface atmosphere. In particular, the present academic work has come to treat mathematic mod...
متن کاملSimulation of a cusped bubble rising in a viscoelastic fluid with a new numerical method
We developed a new lattice Boltzmann method that allows the simulation of two-phase flow of viscoelastic liquid mixtures. We used this new method to simulate a bubble rising in a viscoelastic fluid and were able to reproduce the experimentally observed cusp at the trailing end of the bubble. 2000 Elsevier Science B.V. All rights reserved.
متن کاملSteady and Transient Motion of Spherical Particles in Viscoelastic Liquids
1. Introduction The motion of a spherical particle through a fluid with non-Newtonian rheological properties is a well-studied problem with a broad range of practical application from sedimentation of muds and slurries to processing of filled polymer melts. As a benchmark problem for computational rheology and the evaluation of numerical codes (cf. Hassager, 1988), the sedimentation of a sphere...
متن کاملCharacterization of Viscoelastic Properties of Polymeric Materials through Nanoindentation
Nanoindentation is used to determine the dynamic viscoelastic properties of six polymer materials. It is shown that varying the harmonic frequency of the nanoindentation does not have any significant effect on the measured storage and loss moduli of the polymers. Agreement is found between these results and data from DMA testing of the same materials. Varying the harmonic amplitude of the nanoi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Transactions of the JSME (in Japanese)
سال: 2015
ISSN: 2187-9761
DOI: 10.1299/transjsme.14-00612