Osborne Reynolds (Reynolds Osborne)

(1842-1912)
Born in Belfast, August 23, 1842 in the family priest. Since 18 years he worked in the machine shop, went to Cambridge University, where he studied mathematics and mechanics. Graduated from the University in 1867. From 1868 to 1905 - Professor of structural mechanics, University of Manchester. Since 1888 led Vitvortovskuyu Engineering Laboratory. Reynolds works devoted to mechanics, hydrodynamics, heat, electricity, magnetism. In 1883, Reynolds found that the laminar flow becomes turbulent when the introduction of the dimensionless quantity (Reynolds number) exceeds a critical value. The Reynolds number is widely used in solving problems of hydro-and aerodynamics in the case of small and medium-sized subsonic speeds. Reynolds determined the mechanical equivalent of heat. Constructed a number of turbines and centrifugal pumps. Reynolds died in Uotchete (Somerset) 21 February 1912.