Johann Nikuradze

Johann Nikuradze (ივანე ნიკურაძე, Ivane Nikuradze ; born November 20, 1894 in Samtredia ; † July 18, 1979 ) was a Georgian- born German engineer and physicist . Johann Nikuradze was the brother of the physicist Alexander Nikuradze .

Life

Johann Nikuradze studied in Kutaisi . On the recommendation of the dean of Tbilisi State University , Petre Melikishvili, he left the country for further studies in 1919. Because of the expansion of the Soviet system to Georgia in 1921, he did not return to his country of birth and took German citizenship.

Nikuradse was a doctoral student with Ludwig Prandtl in 1920 and later worked as a researcher at the Kaiser Wilhelm Institute for Flow Research . In the early 1930s, despite his close ties to the NSDAP, the National Socialist factory cell organization of the Kaiser Wilhelm Institute for Flow Research placed him under the control of spying for the Soviet Union and stealing books from the institute. Prandtl initially defended him, but was eventually forced to fire him in 1934. From 1934 to 1945 he was a professor at the University of Breslau , in 1945 he became an honorary professor at the RWTH Aachen .

Nikuradse lived mainly in Göttingen and dealt with hydrodynamics. His most famous attempt was published in Germany in 1933. Nikuradse carefully measured the friction in flow tests as it occurs in pressure pipes at different speeds. He recognized how the drag coefficients of pipelines behave in relation to the flow velocity.

See also

• Nikuradze's formula in the article pipe friction coefficient

Individual evidence

1. ↑ Petre Melikishvili http://www.photomuseum.org.ge/didebulidze/10_en.htm
2. ↑ Monika Renneberg, Technology and National Socialism: Continuities and Discontinities , p. 79. Cambridge University Press , ISBN 0521528607 , 1994
3. ^ Laws of flow in rough pipes , in: Research booklet 361, part B, VDI Verlag, Berlin, 1933