What is the effects of shear force on Newtonian and non-Newtonian fluids

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Newtonian fluids are those which flow newton law of viscosity and Non-Newtonian fluid are those that does not follow that rules. The Newtonian fluid viscosity is independent of the shear force applied on the system and its does not change with the change in the shear force for a given temperature. On the other hand the Non Newtonian fluids are those whose viscosity changes with change in shear force. They have four different conditions in this case; Dilatant, Pseudoplastic, Rheopectic, and Thixotropic 

In the case of Newtonian fluid temperature effect the lubrication of steam turbine as increase in temperature decreases the viscosity of the lubricant and thus compromising the lubrication process. For Non Newtonian fluids the temperature and pressure both affects the lubrication process with high pressure increases the viscosity of the fluid.


Talha Atta is an automotive expert and one of the finest technical content writers from Pakistan. Talha owns WheelWisely.com and is Chief Editor at AutoGlobes.com. He has covered extremely granular content about structures, manufacturing process, automotive, materials and renewable energy. Connect with him on Upwork or check out more of his work on LinkedIn.

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