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Paul Richard Heinrich Blasius (9 August 1883 – 24 April 1970) was a German fluid dynamics physicist.He was one of the first students of Prandtl.. Blasius provided a mathematical basis for boundary-layer drag but also showed as early as 1911 that the resistance to flow through smooth pipes could be expressed in terms of the Reynolds number for both laminar and turbulent flow.
A schematic diagram of the Blasius flow profile. The streamwise velocity component () / is shown, as a function of the similarity variable .. Using scaling arguments, Ludwig Prandtl [1] argued that about half of the terms in the Navier-Stokes equations are negligible in boundary layer flows (except in a small region near the leading edge of the plate).
The Blasius correlation is the simplest equation for computing the Darcy friction factor. Because the Blasius correlation has no term for pipe roughness, it is valid only to smooth pipes. However, the Blasius correlation is sometimes used in rough pipes because of its simplicity. The Blasius correlation is valid up to the Reynolds number 100000.
Skin friction drag is a type of aerodynamic or hydrodynamic drag, which is resistant force exerted on an object moving in a fluid. Skin friction drag is caused by the viscosity of fluids and is developed from laminar drag to turbulent drag as a fluid moves on the surface of an object. Skin friction drag is generally expressed in terms of the ...
August Wilhelm Heinrich Blasius (5 July 1845 in Braunschweig – 31 May 1912 in Braunschweig) was a German ornithologist. Blasius belonged to a family of scientists: his father was the ornithologist Johann Heinrich Blasius (1809-1870) and his brother was the ornithologist Rudolf Heinrich Paul Blasius (1842-1907).
Blasius of Parma (Biagio Pelacani da Parma) (c. 1350 – 1416) was an Italian philosopher, mathematician and astrologer. [1] He popularised English and French philosophical work in Italy, where he associated both with scholastics and with early Renaissance humanists .
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