Thixotropic is a type of time dependent viscosity. Yoghurt, peanut butter and most gels act in this manner. When stirred continuously honey becomes more liquid in its character. In other words, the viscosity of the fluid decreases when stress is applied for a prolonged duration of time. Thixotropic – this means the fluid behaves like a solid when it is kept still and becomes liquid when shaken.Due to different characteristics of these non-Newtonian fluids, they are categorized into several groups. The characteristics of non-Newtonian fluids may change depending on the amount of stress applied or else on the duration the stress is applied. When stressed, not all non-Newtonian fluids react the same way some become more solid, while others become more fluid. Pressure is measure in Newtons per square meter. Force is measured in Newton (N) What is pressure?įorce applied per unit area of the surface of an object is called the pressure. What is force?Ī push or pull which affects an object’s form, direction, and/or movement to change. The viscosity of thick slow-flowing liquids is high, while the viscosity of thin fast-flowing liquids is low. The measure of a fluid’s resistance to flow. Non-Newtonian fluids, on the other hand, are rather prevalent. Whereas no actual fluid exactly meets the criteria, many prevalent liquids and gases, such as water and air, can be considered to be Newtonian fluids. Newtonian fluids are the most basic mathematical representations of liquids that take into account viscosity. Within the temperatures of 0˚C and 100˚C which are the melting point and the boiling point of the water respectively, water has a constant viscosity. The Newtonian fluids had a fixed viscosity or flow quality in a given temperature and an atmospheric pressure. He described Newtonian fluids which are normal liquids that had a constant viscosity. Sir Isaac Newton is famous for the development of several important scientific theories in the fields of physics as well as mathematics.
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