Questions tagged [non-newtonian-fluids]
The non-newtonian-fluids tag has no usage guidance.
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Behaviour of light in non-Newtonian fluids
So if a ray of light is passed through a cuboidal glass tub, and refraction occurs for the first time and if force is applied on the the fluid laterally, the viscosity would vary and so would it's ...
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Can you use formula for viscosity derived from Stokes' law to calculate viscosity of non-Newtonian fluid if constant force is applied?
I would like to drop a ball into a test tube containing mixed corn starch and water ( in different ratios) and use Stokes law to get the viscosity for the fixed weight of the ball that I used. Would ...
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Optical properties of non-Newtonian fluids
I'm interested in understanding the distinctions between non-Newtonian fluids and regular Newtonian fluids regarding their optical properties, including refractive index, nonlinear optical behavior (...
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Falling through a thixotropic ocean -- what would happen?
Drop a heavy incompressible object into water and it would splash and then presumably reach a certain terminal velocity where acceleration is nill.
If you dropped a heavy incompressible object into a ...
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If fluids have zero shear modulus, how do I make sense of graphs like strain rate vs shear stress (to classify fluids as Newtonian or non-Newtonian)?
Following the definition on the wiki: Fluids are substances that have zero shear modulus, or, in simpler terms, a fluid is a substance which cannot resist any shear force applied to it.
If fluids ...
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Is there such a thing as a catastrophic shear thinning liquid?
Non-Newtonian liquids can change their viscosity as a function of shear stress. Shear thinning liquids are those liquids whose viscosity decreases with shear stress. The examples I have seen of such ...
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Non-Newtonian Fluid Stop a Bullet?
I just saw a YouTube video about Non-Newtonian fluids where people could actually walk on the surface of the fluid but if they stood still, they'd sink. Cool stuff.
Now, I'm wondering: Could a pool ...
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Limitations of spring and dashpot models in terms of strain meaningfulness
It is common to explain viscoelastic materials with spring and dashpot 1D constructions, e.g:
which represents a Maxwell rheology, usually explained by saying that $ \sigma = \eta \dot{\epsilon}_1 = ...
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Surface Tension on Micro and Nano Scales
Dragonflies have holes scattered across the veins of their wings that are hypothesized to allow air to pass through but keep blood in. These holes are typically on the order of a few nanometers. The ...
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How do I calculate Reynold's number for a non-newtonian fluid?
I am familiar with the known formula to find Reynold's number in a circular pipe for newtonian fluids:
$$\text{Re} = \frac{\rho \bar{v}D}{\mu}$$
where $\rho$ is the density, $\bar{v}$ is the average ...
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Why are non-Newtonian fluids called non-Newtonian when they follow Newton’s third law?
To my understanding, Newton’s third law states that for every action there is an equal and opposite reaction. Therefor if I punch the non-Newtonian fluid harder, there will be a harder reaction force ...
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Water coming out of a capillary tube when height is reduced below initial level
Consider a capillary tube of height $H_1$. Water raises to a height $h_1$ in this tube. Now the capillary tube is cut such that its new height is $H_2 < h_1$.
I've read in many textbooks and other ...
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Question About Momentum Flux Analysis Using Force Equations In Fluid Mechanics
I was just revising fluid mechanics "Momentum Flux Analysis & Control Volumes" and I just noticed that there is an assumption in which we can assume to deal with gauge pressure instead ...
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Can centrifugal force exist in non-Newtonian mechanics?
Judging on the fact that there are certain non-Newtonian fluids, that behave in a way adverse to Newtonian Mechanics, such as oobleck, is there a way for the idea of centrifugal force to exist outside ...
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Is WD40 a Newtonian liquid?
Reading the technical specifications of WD40 it says that it has a quite high kinematic viscosity (i.e. very little viscous fluid) of 2.8 cST @38C. However reading through its revealed trade secret ...
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