The weissenberg effect
WebRod Climbing - The Weissenberg Effect. A dilute solution (0.025 wt%) of a high molecular weight (2 ×10 6 g/mol) polystyrene polymer (Polysciences Inc.) is dissolved in a low molecular weight (~100 g/mol), Newtonian, … WebOne 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 …
The weissenberg effect
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WebMay 2, 2016 · 20K views 6 years ago In 1947, Karl Weissenberg published a paper discussing the ability of some fluids to climb a spinning rod. This phenomena, commonly … 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 …
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 … WebThe 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 …
WebExtensive 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 ... WebNov 1, 1977 · Abstract The climb of viscoelastic liquids up a rotating rod, often called the Weissenberg effect, has often been observed in polymer solutions, and several theoretical …
WebApr 14, 2024 · The effect of viscoelasticity on the velocity distribution is presented in panel 6(c); here, we consider ε ̃ W i 2 = 0.1, 1, 2 for both the lPTT and the gPTT models. Also, the Joule heating and Soret effects are present with γ θ = 0.06 and S T, 0 = 6.94, respectively, considering κ 0 = 50; also, the gPTT model is evaluated with α = β = 1.
WebJul 1, 2024 · We investigate the Weissenberg effect, i.e., the normal stress effect or the elastic effect, of the turbulence of a Newtonian fluid. We put forth a general Weissenberg … taylor forest products pembrokeWebApr 3, 2024 · The previously established effect of the yield stress in suppressing plug formation [Shemilt et al., J. Fluid Mech., 2024, vol. 944, A22] is shown to be amplified by introducing surfactant. ... (min) normally decreases to zero faster with increasing relaxation time parameter, the Weissenberg number The authors, and has a significant effect on ... taylor forge flange catalogWebThe 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 taylor formulariotaylor forge engineered systems incWebThe 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 ... taylor fork ecological areaWebAug 7, 2014 · The thing we see today is called the Weissenberg effect and this is how it works. You take a spinning rod and put it into a solution of liquid polymer (which is usually … taylor forest products pembroke maWebThe "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 … taylor forge seamless welding fittings