Friction friction and wear in so-called self-lubricating materials. Fluid friction occurs between fluid layers that are moving relative to each other. This internal resistance to flow is named "viscosity". In everyday terms, the viscosity of a fluid is described as its "thickness". Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. The less viscous the fluid, the greater its ease of deformation or movement. All real fluids (except superfluids) offer some resistance to shearing and therefore are viscous. For teaching and explanatory purposes it is helpful to use the concept of an inviscid fluid
Physics of Fluids of 2.279. Physics of Fluids Physics of Fluids is a peer-reviewed monthly scientific journal on fluid dynamics, founded by the American Institute of Physics in 1958, and is published by the AIP Publishing. The journal focus is the dynamics of gases, liquids, and complex or multiphase fluids—and the journal contains original research resulting from theoretical, computational, and experimental studies. From 1958 through 1988, the journal included plasma physics. From 1989 until 1993, the journal split into "Physics of Fluids A" covering fluid dynamics, and "Physics of Fluids B," on plasma physics. In 1994, the latter was renamed "Physics of Plasmas",