Albert Strickler

from Wikipedia, the free encyclopedia

Albert Strickler (born July 25, 1887 in Wädenswil ; † February 1, 1963 in Küsnacht ) was a Swiss mechanical and hydraulic engineer who became known for his contributions to fluid dynamics . He was a co-author of the Gauckler-Manning-Strickler flow formula .

Life

Strickler studied mechanical engineering and electrical engineering at the ETH Zurich . He was an intern at Escher Wyss AG , and as an assistant at Professor Franz Prášil's chair , he dealt with the vibrations in the moated castle . In 1916 he received his doctorate on problems in mechanical engineering and then held lectures as a private lecturer at the ETH Zurich on economic problems in mechanical engineering.

In 1918, Strickler was elected Section Head of the Federal Office for Water Management. During this time he developed the speed formula named after him. In 1928, Strickler was appointed director of the Swiss power transmission company in Bern. He headed this company until it was dissolved in 1939. In the period that followed, Strickler was mainly active as an expert, focusing primarily on the possibility of using hydropower in Switzerland.

Speed ​​formula

Strickler's speed formula with the 2/3 power of the hydraulic radius was published in 1868 by Philippe Gaspard Gauckler and in 1891 by Robert Manning . Strickler, however, propagated it as a general equation for uniform flows in all types of channels. Because of its simplicity, the formula is often used in practice for open channels. The 2/3 power formula is applicable for hydraulically rough channels. The dimensional coefficient is also named after him in the German-speaking world.

Empirical formula for bed load carrying rivers

Strickler also related his coefficient to the roughness of the sand in the channel bed and created an empirical formula for bed load-carrying rivers , which, however, became less well known.

literature

  • Daniel Vischer : Swiss pioneers in hydraulics. On the 200 anniversary of the death of Leonhard Euler. In: Swiss engineer and architect. Vol. 101, 1983, No. 48, pp. 1129-1134.
  • Dr. Ing.Albert Strickler: Water and Energy Management. Vol. 55, 1963, No. 6, p. 221.
  • Paul-Gerhard Franke, Adolf Kleinschroth: Life pictures in short version. Personalities in the field of hydraulics and hydraulic engineering from German-speaking countries (= hydraulics and hydrology ). In: Messages. No. 48. Technical University of Munich , Munich 1987, p. 260.
  • Willi H. Hager (F.ASCE): Albert Strickler: His Life and Work. Professor Research Institute for Hydraulic Engineering, Hydrology and Glaciology (VAW), ETH Zurich.

Individual evidence

  1. ↑ In 1918, the Swiss power transmission AG, which was dissolved in 1939, was founded in German-speaking Switzerland. In: Serge Paquier: Electricity Industry. 3. From the partnerships of the interwar period to the liberalization of the markets. In: Historical Lexicon of Switzerland .
  2. ↑ Bruno Meyer: Albert Strickler. In: Historical Lexicon of Switzerland .
  3. ^ Paul-Gerhard Franke, engineer (born January 14, 1918 in Leipzig; † August 18, 1996 in Munich). In: Rudolf Vierhaus : German Biographical Encyclopedia . Walter de Gruyter, Berlin 2011.
  4. ^ Adolf Kleinschroth (* October 13, 1940 in Munich; † October 21, 2000 in ibid.): Flow processes in vortex fall shaft. Dissertation at the Technical University of Munich , Faculty of Civil Engineering, Munich 1972. In: Willi Hager: Hydraulicians in Europe 1800–2000. Vol. 2. CRC Press , Boca Raton 2014.
  5. ↑ Communications. No. 48. Technische Universität München , Munich 1987, p. 260 ( limited preview in Google book search).
personal data
SURNAME Strickler, Albert
BRIEF DESCRIPTION Swiss mechanical and hydraulic engineer
DATE OF BIRTH July 25, 1887
PLACE OF BIRTH Waedenswil
DATE OF DEATH 1st February 1963
Place of death Küsnacht