The weissenberg effect
WebWeissenberg effect: When an elastic polymer solution kept in a beaker is stirred, the solution climbs the stirring rod. (b) Barus effect: The polymer solution swells when squeezed … WebApr 12, 2024 · The high Weissenberg number case is substantially “less smooth” and thus more difficult to approximate numerically. For the low Weissenberg number \(\mathcal {W}e = 0.1\) the solution can be obtained without any added stabilization, which corresponds to setting \(\alpha =0\). Such solution (of the original, non-diffusive problem) can be ...
The weissenberg effect
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WebDiscuss the parameters that govern the Weissenberg effect. and explain why each of the parameters influence the effect in brief words its fine Expert Answer The following … WebSep 16, 2008 · When a rod mounted in a hand drill is dipped into a liquid and rotated, for certain non-Newtonian fluids the liquid will climb the rod - sometimes to quite spectacular …
WebAkyildiz [1] studied a similar problem and discussed the effects of Weissenberg number (related to the elasticity of the fluid) and the viscosity ratio on the flowfield. In all the cases mentioned so far, it is assumed that the cylinder is immersed in a fluid. It is, however, also possible to study the internal flow, i.e., flow inside a ... WebThe "Weissenberg Effect" or "Rod-Climbing Experiment" In this video clip a dilute (0.025 wt%) solutionof a high molecular weight (2×10 6 g/mol) polystyrene polymer (Polysciences Inc) is dissolved in a low molecular …
WebJul 14, 2007 · 0:00 / 1:43 The Weissenberg Effect psidot 1.27K subscribers 397K views 15 years ago When a rod mounted in a hand drill is dipped into a liquid and rotated, for … WebSep 21, 2015 · The Weissenberg Effect happens when a fluid behaves in a very counter-intuitive way. Instead of being driven away from a spinning object, it starts climbing. Take …
WebThe flow of viscoelastic polymer solutions and their use as displacing agents in porous media are important for industrial applications, such as enhanced oil recovery and soil remediation. The complexity of flow and high elasticity of conventionally
total transferredWebThis phenomenon was apparently first observed by Weissenberg and Russell 1, and in 1949 Reiner, Scott Blair and Hawley 2 suggested that it be described as the ‘Weissenberg effect’. post secondary vs collegeWebOne example is the Weissenberg Effect (see Fig. 3.10), which arises when a shaft rotates within a viscoelastic fluid. The first normal stress difference leads to a pressure … totaltransformation groupWebWeissenberg effect. [ ′vīs·ən‚bərg i‚fekt] (fluid mechanics) An alteration of the normal stresses in a non-Newtonian fluid on account of elasticity, so that such a fluid, when … total transfer edmontonWebThe governing equations are solved using the finite-difference method, and, a thorough analysis on the effect of the model parameters α and β is presented. The numerical results showed that in the creeping flow limit (Re=0), the development length for the velocity exhibits a non-monotonic behaviour. ... increases slightly with the Weissenberg ... total transformation axminsterWebExtensive experience in all aspects of implementation and deployment of high value technology assets. Powerful problem solving techniques with a CAN do attitude. Large-scale knowledge of ... post secondary vs tertiary educationWebThe Weissenberg effect is a phenomenon that occurs when a spinning rod is inserted into a solution of elastic liquid. Instead of being thrown outward, the solution is drawn towards … total transfer time