Viscosity of honey pa s7/31/2023 Assuming that the plates are very large, with a large area A, such that edge effects may be ignored, and that the lower plate is fixed, let a force F be applied to the upper plate. The relationship between the shear stress and the velocity gradient can be obtained by considering two plates closely spaced at a distance y, and separated by a homogeneous substance. In general, in any flow, layers move at different velocities and the fluid's viscosity arises from the shear stress between the layers that ultimately opposes any applied force. Laminar shear, the non-constant gradient, is a result of the geometry the fluid is flowing through (e.g. The study of flowing matter is known as rheology, which includes viscosity and related concepts. All real fluids (except superfluids) have some resistance to stress and therefore are viscous, but a fluid which has no resistance to shear stress is known as an ideal fluid or inviscid fluid. For example, high-viscosity felsic magma will create a tall, steep stratovolcano, because it cannot flow far before it cools, while low-viscosity mafic lava will create a wide, shallow-sloped shield volcano. Viscosity describes a fluid's internal resistance to flow and may be thought of as a measure of fluid friction. Put simply, the less viscous the fluid is, the greater its ease of movement (fluidity).( 1) Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. In everyday terms (and for fluids only), viscosity is "thickness". ![]() Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. ![]() Clear liquid above has lower viscosity than the substance below.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |