Fran Bošnjaković

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Fran Bošnjaković (born January 12, 1902 in Zagreb ; † October 1, 1993 in Stuttgart ) was a Croatian physicist who researched mainly on technical heat theory and thermodynamics .

Career

The son of the chemist and entrepreneur Srećko Bošnjaković (1865–1907) studied shipbuilding and mechanical engineering at the TH Zagreb from 1919, including with Stepan Tymoshenko and in the machine laboratory of Leopold Sorta (1891–1956). In 1922 he moved to the TH Dresden , where Leopold Carl Friedrich Merkel also worked. From 1926 to 1928 he was an assistant at the TH Zagreb. In 1928 he became a Dr.-Ing. At the TH Dresden for his work on fuel analysis with bomb, manometer and Orsatapparat . PhD. He then worked as a research assistant for Richard Mollier until 1933 , where he qualified as a professor in 1931 with the work on the exchange of substances and heat between vapor and liquid .

In 1933 he was appointed full professor at the University of Belgrade and in 1936 full professor at the University of Zagreb.

In 1935 he married his long-time girlfriend Zlata Luburic in Belgrade, with whom he had sons Srećko Bošnjaković (1937-2014; engineer) and Branko .

From 1942 to 1945 he was chairman of the Croatian Association of Engineers. In 1945 he was arrested several times by the communists and sentenced to forced labor. In the spring of 1947 he was rehabilitated and appointed rector of the University of Zagreb in 1951/52. His celebratory speech caused a scandal.

In 1953, the TH Braunschweig appointed him (as the successor to Ernst Schmidt) to the position of full professor of thermal theory (thermal engineering institute and machine laboratory). He was elected chairman of the committee for heat research at the VDI .

From 1961 to 1968 he was professor of thermodynamics at the TH Stuttgart. His Brunswick colleagues Wolfgang Springe (1925–1996), Klaus Winkler (* 1930 in Bennungen) and Klaus-Jürgen Mundo (1929–2016) followed him; Added to this were Tarit Kumar Bose (* 1938), Klaus Penski (* 1931), Johann Algermissen (1928–2007), Hans Beer (* 1932) and Knoche. On April 1, 1961, he founded the Institute for Thermodynamics of Aero Engines, initially in a handsome wooden barracks.

plant

Franjo Bošnjaković continued the work of Rudolf Plank as well as Mollier and Adolph Nägel on combustion processes and fuel parameters. He was interested in growing vapor bubbles, the frequency of bubble formation and their rate of rise. In the 1920s he researched two-substance mixtures with Merkel. Like GH Bryan , he emphasized the concept of available energy for technical applications since 1938 and demonstrated it with many examples. "He gave the impetus for the exergetic investigations in the article Struggle against irreversibility (1938)". His former cell mate Zoran Rant (who dealt with the Solvay process ) generalized these considerations and from 1953 introduced the terms exergy (for technical work ability) and anergy , which means that statements of the 2nd law of thermodynamics can be formulated clearly and easily. In Braunschweig, Bošnjaković researched the thermodynamics of multi-component mixtures, which were treated graphically in state diagrams.

Visiting professorships

  • University of Minnesota (Minneapolis, Minnesota, USA)
  • University of Notre Dame (Indiana, USA)
  • University of Alabama in Huntsville 1968–69 (Tuscaloosa, Alabama, USA)
  • TH Delft (Holland)
  • Universidad Nacional de la Plata (Buenos Aires, Argentina)

Memberships

  • Instituto Veneto di Scienze, Lettere ed Arti (Venice)
  • from 1969: Heidelberg Academy of Sciences
  • from 1940: Yugoslav Academy of Sciences and Art
  • Croatian Academy of Sciences and Arts (HAZU)

Awards

  • Honorary doctorate from the University of Zagreb
  • Honorary doctorate from RWTH Aachen
  • Grashof thinking hat of the VDI
  • Gold medal from the ATI Associazione Termotecnica Italiana, Padova
  • Gold medal from the Institute Francais des Combustibles et de l´Energie (IFCE), Paris

Publications

  • Evaporation and liquid overheating ; 1930
  • with F. Merkel: Diagrams and tables for the calculation of absorption refrigeration machines ; 1930
  • Fight against irreversibilities ; In: Archives for heating and steam boilers . Zeitschrift für Energiewirtschaft, Volume 19; 1938
  • with Karl Schiebl (senior engineer, Nienburg / Saale): heat management in the sugar industry ; 1939
  • Quality of heating systems and the performance rules ; 1939
  • with M. Viličić, B. Slipčević: Uniform calculation of recuperators ; 1951
  • Mechanical engineering ; 3 volumes
  • Technical thermodynamics ; 2 parts (with Karl-Friedrich Knoche )
  • Nauka o toplini, svezak prvi, drugi i treći
  • with U. Renz, P. Burow: Mollier Enthalpy, Entropy Diagram of Water ; 1970
  • On the thermodynamics of the solar collector ; 1981
  • Heat diagrams for gasification, combustion and soot formation

swell

Individual evidence

  1. ↑ http://www.amac-d.de/bosnjakovic.htm
  2. ↑ http://www.uni-stuttgart.de/itlr/institut/geschichte/Geschichte_des_ITLR_von_1961-2011.pdf
  3. ↑ sugar ; Volume 17; M. & H. Schaper; 1964; P. 274
  4. ^ Hans Dieter Baehr: Thermodynamics ; 2013; P. 7
personal data
SURNAME Bošnjaković, Fran
ALTERNATIVE NAMES Bošnjaković, Franjo
BRIEF DESCRIPTION Croatian physicist who mainly researched technical thermodynamics and thermodynamics
DATE OF BIRTH January 12, 1902
PLACE OF BIRTH Zagreb
DATE OF DEATH October 1, 1993
Place of death Stuttgart