Temperature (kind of a measure of molecular velocity), density (heavy resists acceleration), and concentrations of mixtures of the fluid(s) and solutes affect the. The viscosity of air is really low, water, alcohol, silica and clay powder, and polymers like oil and gum have have viscosities in between. A liquid with low viscosity, or thats thin, like water, will flow quickly. The next layer is in contact with the moving layer since there is internal friction between the two layers, it also accelerates, and so on through the depth of the fluid. The viscosity of solid steel is crazy high. A liquid with high viscosity - that is thick, like peanut butter - will flow slowly. The layer of fluid in contact with the moving plate is accelerated and starts to move due to the internal friction between moving plate and the fluid. Below subzero temperatures and under elevated pressures, DeFries and Jonas 157 measured liquid water viscosity up to 600 MPa in the temperature range of 15. In the diagram, the fluid is initially at rest. Fluids have zero shear strength, but the rate at which they are sheared is related to the same geometrical factors A and L as is shear deformation for solids. The motion in the figure is like a continuous shearing motion. Also, the water extends the highest close to the sides of the tube, and dips down in the middle of the tube. The thin tube is inserted into a cup of water, and the water climbs up in the tube, reaching a higher level than it does in the cup. Thus, water is thin, having a low viscosity, while vegetable oil is thick having a high viscosity. Illustration of water ascending a small tube via capillary action. Does water have a high viscosity Viscosity describes a fluid’s internal resistance to flow and may be thought of as a measure of fluid friction. Care is taken to ensure that the flow is laminar, that is, the layers do not mix. Mercury is a substance has greatest viscosity. Each successive layer from the top down exerts a force on the one below it, trying to drag it along, producing a continuous variation in speed from v to 0 as shown. The layer (or lamina) of fluid in contact with either plate does not move relative to the plate, so the top layer moves at speed v while the bottom layer remains at rest. The bottom plate is held fixed, while the top plate is moved to the right, dragging fluid with it. viscosity is how smoothly a liquid flows and how hardly the liquid flows it is highly viscous. The liquid with the most intermolecular force is high viscous. Is acetone more viscous than water Acetone has a viscosity 3x less than water but weighs 2.5 times more. The fluid to be measured is placed between two parallel plates. That is why, glycerol has a higher viscosity than water. \) shows how viscosity is measured for a fluid.
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