DAHL


DAHL
\
20.1.1881 Hedemora/S - 15.10.1957 Stockholm/S
\
Hjalmar Dahl graduated as a mining engineer from the Uppsala University in 1905. He joined in 1907, after additional education in mathematics and mechanical engineering, the turbine designer Finshyttan in Filipstad. He was appointed in 1914 professor of mining engineering at the Filipstad Mining School and took over in 1922 the Institute of mechanical engineering. Dahl was elected Member of the Swedish Engineering Academy in 1919. He was a Member of the International Association of Hydraulic Research IAHR and participated in its 1955 Congress in La Haye.
\
Dahl was a designer and an expert in turbines as used for the production of hydroelectricity. Starting in 1905, when with the turbine furnisher in Finshyttan, he mainly experimented with Francis turbines for an improved hydraulic and mechanical turbine performance. In 1907 Dahl proposed a novel element for turbine regulation which was also elaborated at the hydraulic laboratory. In the same year, he proposed the first Swedish vertical pump arrangement for heating purposes. In the 1910s, Dahl was one of the Swedish experts in developing the Swedish hydropower potential. In the 1920s, he took then interest in the novel developments of the Kaplan turbine and contributed, as did others, to its particular cavitation concerns. The 1927 publication is an addition to the hydraulics of moving hydraulic jumps in canals, as often subjected by a rapid change of the discharge regime downstream from powerhouses of hydroelectric installations. In the 1930s, Dahl contributed to centrifugal pumps, again with detailed laboratory observations. The scaling laws governing turbine flow were presented in 1946 with a notable publication.
\
Anonymous (1944). Dahl, Hjalmar Olivier. Svenska män och kvinnor 2: 160. Bonniers: Stockholm. P
Dahl, H. (1913). Axialtryck vid Francisturbiner. Teknisk Tidskrift 43(M7): 73-76.
Dahl, H. (1919). Untraverkets turbiner och deras provning. Teknisk Tidskrift 49(M12): 153-159. Dahl, H. (1923). Dahls föreläsnigar nedtecknade av Svante Lindström. KTH: Stockholm. Dahl, H. (1927). Om svallningar i kanaler och tuber. Ingeniörsvetenskapsakademiens 63: 1-18. Stockholm.
Dahl, H. (1933). Största tillåtna sughöjden vid turbiner och centrifugalpumpar. Teknisk Tidskrift
63(M3): 25-29.
Dahl, H. (1946). Modellprov vid vattenturbiner. Teknisk Tidskrift 76: 495-498.
Dahl, H. (1955). On non-permanent flow in open canals. 6 IAHR Congress La Haye D(19): 1-16.

Hydraulicians in Europe 1800-2000 . 2013.

Look at other dictionaries:

  • Dahl — Saltar a navegación, búsqueda Dahl puede significar: Dal, un tipo de comida india Personas llamadas Dahl: Anders Dahl, un biólogo y botánico Arlene Dahl, una actriz de cine estadounidense Ingolf Dahl, un compositor estadounidense nacido en… …   Wikipedia Español

  • Dahl — steht für: Dahl (Familienname), der Familienname Dahl Dahl bezeichnet Orts und Stadtteile in Nordrhein Westfalen: Dahl (Hagen), Ortsteil von Hagen, kreisfreie Stadt im Ruhrgebiet Kürten Dahl, Ortsteil von Kürten, Rheinisch Bergischer Kreis Dahl… …   Deutsch Wikipedia

  • Dahl — may refer to: Dahl (surname) Dal or dahl, a dish or preparation of lentils or other pulses In German places: Hagen Dahl, Hagen, Ruhrgebiet Kürten Dahl, Kürten, Rheinisch Bergischer Kreis Marienheide Dahl, Marienheide, Oberbergischer Kreis… …   Wikipedia

  • DAHL (R.) — Roald DAHL 1916 1990 Né en 1916 au pays de Galles de parents norvégiens, Roald Dahl vit une enfance peu facile: il perd sa sœur aînée puis son père, courtier maritime, à l’âge de trois ans. Il est élevé au pensionnat de Repton School dans le… …   Encyclopédie Universelle

  • dahl — [däl] n. alt. sp. of DAL1 * * * dahl (däl) n. 1. See pigeon pea. 2. or dal A thick creamy East Indian stew made with lentils or other legumes, onions, and various spices.   [Hindi …   Universalium

  • Dahl — [däl] n. alt. sp. of DAL1 * * * Dahl (däl), Roald. 1916 1990. British fiction and screenplay writer best known for his children s books, including James and the Giant Peach (1961) and Charlie and the Chocolate Factory (1964). * * * (1916–90) a… …   Universalium

  • Dahl — Dahl,   1) Johan Christian Clausen, norwegischer Maler, * Bergen 24. 2. 1788, ✝ Dresden 14. 10. 1857; besuchte die Akademie in Kopenhagen (1811 18), ging 1818 nach Dresden und wurde 1824 nach einer Italienreise (1820/21) ebenda Lehrer an der… …   Universal-Lexikon

  • dahl|ia — «DAL yuh, DAHL ; especially British DAYL yuh», noun. 1. a tall plant with large, showy flowers of many colors and varieties that bloom in late summer and autumn. It belongs to the composite family; the roots are tuberous. Dahlias are native to… …   Useful english dictionary

  • Dahl — Dahl, 1) Joh. Christian Wilh., geb. 1771 in Rostock, wurde 1802 daselbst Professor der klassischen Philologie, 1804 der Theologie, 1807 auch Consistorialassessor u. st. 1810. Er schr. u.a.: Übersetzungen u. Erläuterungen des Amos, Gött. 1795;… …   Pierer's Universal-Lexikon

  • Dahl [1] — Dahl, Dorf im preuß. Regbez. Arnsberg, Landkreis Hagen, an der Staatsbahnlinie Hagen Lüdenscheid, hat eine evang. Kirche, Hammerwerke (Verfertigung von Spaten, Sensen etc.) und (1900) 2134 Einw …   Meyers Großes Konversations-Lexikon

  • Dahl [2] — Dahl, 1) Johann Christian Claussen, Maler, geb. 24. Febr. 1788 zu Bergen in Norwegen, gest. 14. Okt. 1857 in Dresden, bezog 1811 die Akademie von Kopenhagen und kam 1818 nach Dresden, wo er Mitglied und Professor der Akademie wurde. Von hier aus… …   Meyers Großes Konversations-Lexikon


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.