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Special issue on “numerical simulation in non-newtonian fluid mechanics”
Journd of Non-Newtoniun Fluid Mechanics, IO (1982) I Elsevier Scientific Publishing Company, Amsterdam-Printed
in The Netherlands
Special Issue on “Numerical Simulation in Non-Newtonian Fluid Mechanics”
Introduction One of the growth areas in non-Newtonian Fluid Mechanics at the present time concerns the numerical simulation of complex flows in the case of highly elastic liquids. In this case, implicit differential or explicit integral rheological models have to be employed in the analyses and, in general, techniques used in Newtonian fluid mechanics cannot be easily adapted to meet the new situation. Two International Workshops have already been held to discuss the peculiar problems presented by the new situation. The first took place at Brown University during the Fall of 1979 and the second at Ross Priory, Loch Lomond, Scotland in May 198 1. A number of papers were presented at the second workshop and although there was no formal workshop proceedings, the papers contained in this special issue are representative of those given at the workshop and give a good indication of the present state of the art. Certainly, the pressing problem at the present time is to determine why existing solutions all break down at some (rather small) value of the Weissenberg number and to decide how this difficulty can be overcome. A third International Workshop is scheduled for May 1983 and will be held somewhere in New England. Interested readers should contact either Professor R.C. Armstrong of M.I.T. or Professor B. Caswell of Brown University for further details. K. WALTERS
in The Netherlands
Special Issue on “Numerical Simulation in Non-Newtonian Fluid Mechanics”
Introduction One of the growth areas in non-Newtonian Fluid Mechanics at the present time concerns the numerical simulation of complex flows in the case of highly elastic liquids. In this case, implicit differential or explicit integral rheological models have to be employed in the analyses and, in general, techniques used in Newtonian fluid mechanics cannot be easily adapted to meet the new situation. Two International Workshops have already been held to discuss the peculiar problems presented by the new situation. The first took place at Brown University during the Fall of 1979 and the second at Ross Priory, Loch Lomond, Scotland in May 198 1. A number of papers were presented at the second workshop and although there was no formal workshop proceedings, the papers contained in this special issue are representative of those given at the workshop and give a good indication of the present state of the art. Certainly, the pressing problem at the present time is to determine why existing solutions all break down at some (rather small) value of the Weissenberg number and to decide how this difficulty can be overcome. A third International Workshop is scheduled for May 1983 and will be held somewhere in New England. Interested readers should contact either Professor R.C. Armstrong of M.I.T. or Professor B. Caswell of Brown University for further details. K. WALTERS