Showing papers by "Kenneth Walters published in 1981"
TL;DR: A flow visualization technique by means of an expanded laser beam and trace amounts of particulate additives is used to study the behavior of Newtonian and non-Newtonian elastic liquids in a number of complex geometries as mentioned in this paper.
Abstract: A flow visualization technique by means of an expanded laser beam and trace amounts of particulate additives is used to study the behaviour of Newtonian and non-Newtonian elastic liquids in a number of complex geometries. Particular attention is paid to the effect of fluid elasticity on the flow characteristics. Attempts are made to simulate numerically the observed flows by using finite-difference techniques. The agreement between theory and experiment is very satisfactory.
68 citations
TL;DR: In this paper, a finite-difference formation is employed to study the use of integral rheological models in the numerical simulation of complex flows and a contra-variant Maxwell model is used in the study.
Abstract: A finite-difference formation is employed to study the use of integral rheological models in the numerical simulation of complex flows A contra-variant Maxwell model is used in the study In the method, the physical variables are determined numerically at grid points and no interpolation procedure is required The equations for the displacement functions are solved using a Lax−Wendroff scheme and the complete set of governing equations is solved iteratively using preconditioned conjugate gradient methods The numerical data obtained for the integral model are in good agreement with existing results for the corresponding differential model
32 citations