Shear flow themselves. In a shearing flow, adjacent layers of fluid move parallel to each other with different speeds. Viscous fluids resist this shearing motion. For a Newtonian fluid, the stress exerted by the fluid in resistance to the shear is proportional to the strain rate or shear rate. A simple example of a shear flow is Couette flow, in which a fluid is trapped between two large parallel plates, and one plate is moved with some relative velocity to the other. Here, the strain rate is simply the relative velocity divided by the distance between the plates. Shear flows in fluids
Physics of Fluids American Physical Society in 1984 to reward a young scientist who published a paper containing significant contributions to fluid dynamics during the previous year. The award-winning paper was chosen from "Physics of Fluids" until 2016. "Physics of Fluids A", "Physics of Fluids B", and "Physics of Fluids" were ranked 3, 4, and 6, respectively based on their citation impact from 1981–2004 within the category of journals on the physics of fluids and plasmas. According to the Journal Citation Reports, in 2016, "Physics of Fluids" published 554 articles and was cited 27,962 times. "Physics of Fluids" has a 2017 impact factor