Finite Element Calculations Of Viscoelastic Fluid Flow In A Spinning And Nutating Cylinder
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Finite Element Calculations of Viscoelastic Fluid Flow in a Spinning and Nutating Cylinder
An investigation has been performed of the flow of a non-Newtonian liquid in a spinning and nutating cylinder. An approximate analysis has been effected on the assumption that the radio of coning rate to spin rate is small and applied to the case of a cylinder of infinite length. A numerical calculation has been performed for the actual flow of two specified non- Newtonian liquids, using the finite element code FIDAP. Results are presented in both graphical and tabular form showing flow fields and calculated values of the despin moment for ranges of parameters. The question of appropriate representation of the liquid's non-Newtonian behavior is discussed. Keywords: Liquid Filled Projectiles; Flight Stability; Aeroballistics; Viscoelastic Fluids.