Vascular resistance recent results showing the sheath flow surrounding the plug flow in a vessel, the sheath flow size is not neglectible in the real blood flow velocity profile in a vessel. The velocity profile is directly linked to flow resistance in a vessel. The viscosity variations, according to Thurston, are also balanced by the sheath flow size around the plug flow. The secondary regulators of vascular resistance, after vessel radius, is the sheath flow size and its viscosity. Thurston, as well, shows that the resistance R is constant, where, for a defined vessel radius, the value η(δ)/δ is constant in the
Physics of Fluids former continued under its original name, "Physics of Fluids". "Physics of Fluids" was originally published by the American Institute of Physics in cooperation with the American Physical Society's Division of Fluid Dynamics (APS-DFD). In 2016, the American Physical Society founded its own journal "Physical Review Fluids". From 1985–2015, "Physics of Fluids" published the "Gallery of Fluid Motion", containing award-winning photographs, images and visual streaming media of fluid flow. Since 2016, the "Gallery of Fluid Motion" is published by the American Physical Society. With funding from the American Institute of Physics the annual "François Naftali Frenkiel Award" was established by the