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Träfflista för sökning "LAR1:cth ;conttype:(scientificother);pers:(Bergdahl Lars 1943)"

Sökning: LAR1:cth > Övrigt vetenskapligt/konstnärligt > Bergdahl Lars 1943

  • Resultat 1-10 av 71
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1.
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2.
  • Allenström, Björn, et al. (författare)
  • Amplification of ship generated wake wash due to coastal effects
  • 2003
  • Ingår i: Transactions - Society of Naval Architects and Marine Engineers. - 0081-1661. ; 111, s. 61-77
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • This paper discusses the results from extensive wake wash measurements carried out with a model of a ROPAX ship passing a bay. The tests were carried out in SSPA 's sea-keeping and maneuvering basin. This model had been subjected to wash wave measurements in open water in previous tests, which gave possibilities for comparisons between restricted and unrestricted waters'. Six wave gauges were placed inside and outside the bay, and a significant drawdown was noticed in addition to amplifications of the Kelvin waves. The drawdown and the Kelvin waves that occurred in the bay are difficult to explain, but this paper makes an attempt to analyze the phenomena that occur. The different wave theories that can be used in this case are presented The methods that are used for analyzing the measured signals are described One conclusion that can be made is that drawdown caused by the Bernoulli wave can probably be considered a worse problem than ordinary wash waves (Kelvin waves) in restricted and especially shallow waters when looking at large displacement ships.
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4.
  • Bergdahl, Lars, 1943 (författare)
  • A theory on the elasticity of sea ice
  • 1983
  • Ingår i: 7'th International Symposium on Port and Ocean Engineering under Arctic Conditions, Espoo 1983. ; , s. 52-68
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • The brine content of sea ice influences many of its properties like e.g. thermal conductivity, melting poin and crystal structure. The phase relations of the ice-brine system is described and used for the calculation of the bulk density and elasticity of sea ice. The mechanical strength of sea ice n in relation to brine content is also briefly reviewed.
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5.
  • Bergdahl, Lars, 1943 (författare)
  • Anchoring problems of large semisubmersibles
  • 1982
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • The demand for exploration-drilling and production platforms in the hostile environment north of the 62 parallel in the Norwegian Sea has led to the development of ever larger floating platforms, designed not only for drilling and early production but also intended for the final production stage. Also for other purposes like chemical processing it is of nterest with very large platforms
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7.
  • Bergdahl, Lars, 1943 (författare)
  • Bestämning av farleders planmått
  • 1999
  • Ingår i: Svensk Hamntidning. - 0346-2110. ; :1999 Nr 3, s. 1-
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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8.
  • Bergdahl, Lars, 1943, et al. (författare)
  • Bevattningsteknik
  • 1970
  • Rapport (övrigt vetenskapligt/konstnärligt)
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10.
  • Bergdahl, Lars, 1943 (författare)
  • Chapter 3: Loading Generating Mechanisms, Thermal Ice Pressure
  • 1986
  • Ingår i: River and lake ice engineering, Water Resources Publications, Chelsea, Michigan, Editor G. Ashton. - 0918334594 ; , s. 102-124
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
    • When a landfast ice cover has benn formed on a lake or an enclsed part of the sea, stresses arise from the thermal expansion or contraction caused by the changing weather, The stresses eventually exer forces against shores, dams or other structures. It is complicatded to calculate such forces for design purposes because of the nonlinrearity of the deformation of the ice, the irregularity of ice covers, the variation of ice properties, and the difficulty of defining the probability of extreme situations.
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  • Resultat 1-10 av 71
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övrigt vetenskapligt/konstnärligt  (71)Ta bort avgränsningen
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Bergdahl, Lars, ... (71)Ta bort avgränsningen
Rivinoja, Peter (4)
Sörman, Lars-Ove, 19 ... (4)
Leonardsson, K (3)
Eskilsson, Claes, 19 ... (3)
Rylander, Anders (3)
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Olsson, Göran (3)
Trumars, Jenny, 1975 (3)
Mårtensson, Nils, 19 ... (3)
Leer-Andersen, Micha ... (2)
Adamsson, Åsa, 1970 (2)
Allenström, Björn (2)
Sjöberg, Anders, 193 ... (2)
Wernersson, Lars (2)
Palm, Johannes, 1984 (2)
Pettersson, Thomas, ... (2)
Bondelind, Mia, 1980 (2)
Moura Paredes, Guilh ... (2)
Li, D. (1)
Eriksson, LI (1)
Vikström, Maria (1)
Lyngfelt, Sven, 1947 (1)
Persson, Jesper, 196 ... (1)
Hanson, Hans (1)
H, Andreasson (1)
Stumbo, S. (1)
Forsman, Björn (1)
Johansson, Jessica (1)
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Eskilsson, Claes (1)
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Melin, Henriette, 19 ... (1)
Claeson, Lennart (1)
Cederwall, Klas (1)
McCullen, Pat (1)
Lindahl, Jan, 1951 (1)
Lunde K, J. (1)
Wernersson, Lennart (1)
Ganander, Hans (1)
Fransson, Lennart (1)
Brydsten, L. (1)
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Bell, Adrain (1)
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Chalmers tekniska högskola (71)
RISE (1)
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Engelska (44)
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