Is there any practical use for non-Newtonian fluids?
Other popular examples are toothpaste, shampoo, paint or blood! A non-Newtonian fluid is defined by the dependence of its viscosity to the stress applied. A great example is ketchup. When you turn a ketchup upside down, the liquid difficultly flows, but once you start squeezing the bottle, ketchup flows more easily!
What is Comsol good for?
COMSOL Multiphysics enables you to simulate electromagnetics, structural mechanics, acoustics, fluid flow, heat transfer, and chemical phenomena in one environment, following one workflow. All simulation apps are created with the same tool, the Application Builder, independent of the type of physics involved.
What are Newtonian fluids used for?
Newtonian fluids are the simplest mathematical models of fluids that account for viscosity. While no real fluid fits the definition perfectly, many common liquids and gases, such as water and air, can be assumed to be Newtonian for practical calculations under ordinary conditions.
Can non-Newtonian fluid stop a bullet?
Created by the Moratex Institute of Security Technologies, the liquid is what’s known as a non-Newtonian fluid. The institute is being tight-lipped on what exactly their fluid is made of, but they revealed that when fitted in a vest, it’s capable of stopping bullets fired at 450 metres (or 1,400 feet) per second.
What happens when the stress is removed from a non-Newtonian fluid?
Thixotropic liquids decrease in viscosity as stress over time increases. Non-Newtonian fluids change their viscosity or flow behaviour under stress. Remove the stress (let them sit still or only move them slowly) and they will return to their earlier state.
Is COMSOL any good?
COMSOL is purely academic software. Despite its extremely user-friendly and well-designed GUI, it has limited capabilities in some areas. The second biggest advantage of COMSOL is its versatility. It can analyze any physical phenomenon, including black holes.
Which is better Ansys vs COMSOL?
Which one is better COMSOL or ANSYS? COMSOL is far more intuitive and user-friendly software (in fact, it is perhaps the most user-friendly FEA application), and it can still handle a wide range of complex issues. When it comes to structural studies and CFD simulations, however, ANSYS seems more talked about.
What is between Newtonian and non-Newtonian fluid?
The key difference between Newtonian and non Newtonian fluids is that Newtonian fluids have a constant viscosity, whereas non-Newtonian fluids have a variable viscosity. We can divide fluids, i.e. liquids and gases, as either Newtonian or non-Newtonian depending on the viscosity of the fluid.
What is the Newtonian and non-Newtonian fluid?
Newtonian fluids obey Newton’s law of viscosity. The viscosity is independent of the shear rate. Non-Newtonian fluids do not follow Newton’s law and, thus, their viscosity (ratio of shear stress to shear rate) is not constant and is dependent on the shear rate.
What can you do with COMSOL Multiphysics ®?
You can account for the properties of the fluids as a function of temperature and composition to model curing and polymerization. When combining other modules in COMSOL Multiphysics ®, you can also model fully coupled and time-dependent fluid–structure interactions.
What types of fluid–structure interactions can I model with COMSOL Multiphysics®?
When combining other modules in COMSOL Multiphysics ®, you can also model fully coupled and time-dependent fluid–structure interactions. Viscoelastic fluid models account for the elasticity in these types of fluids. As the fluid is deformed, there is a certain amount of force that works toward returning the fluid to its undeformed state.
What types of non-Newtonian models are available in the polymer flow module?
In addition to the viscoelastic models, the Polymer Flow Module features a wide range of inelastic non-Newtonian models. Many of the models are generic and used for describing shear thinning and shear thickening. For more specific applications, there are models for viscoplastic and thixotropic fluids.