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 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