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Träfflista för sökning "hsv:(ENGINEERING AND TECHNOLOGY) hsv:(Mechanical Engineering) hsv:(Vehicle Engineering) srt2:(1980-1989)"

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Numrering	Referens	Omslagsbild	Hitta
1.	Bergdahl, Lars, 1943, et al. (författare) Time simulation of the motion of a tension leg platform 1988 Ingår i: BOSS'88 Proceedings of the international conference on behaviour of offshore structures. - 8251908558 ; 2, s. 875-890 Konferensbidrag (refereegranskat)abstract The time-domain motion of a Tension Leg Platform is studied. The used method is based on a convolution technique in which the hydrodynamic reaction force from the frequency-domain solution is Fourier transformed to the time domain. Such a method allows one to consider arbitrary time varying external forces as for example non-linear reaction forces from tendons as well as transient loads.In the developed model time series of first-order wave forces and second-orde slowly varying wave forces are calculated for irregular plane and short-crested waves. Exciting forces due to wind and current are calculated using drag coefficients from model tests. The equations of motion in the time domain are solved for a tension-leg platform performing rigid body motion and results in time series of the motions as well as of the tension in the tendons.Numerical simulations have been carried out and the results are discussed. A comparison is made between calculations and model tests for a tension-leg platform in irregular long-crested waves.
2.	Sunnersjö, Staffan, 1948, et al. (författare) Hydrodynamic inertia and damping of ship hull vibrations 1988 Ingår i: Transactions of the Royal Institute of Naval Architects. - 0035-8967. ; 130, s. 107-117 Tidskriftsartikel (refereegranskat)abstract The entrained water plays an important role in ship hull vibrations. The classic Lewis method for calculation of hydrodynamic added mass has some inherent shortcomings that can result in insufficient accuracy, particularly for higher order modes. This is essentially due to the fact that the Lewis method uses a diagonal mass matrix that is dependent on the mode of vibration, while the physical reality is more accurately represented by a mode-independent, full mass matrix. Such full mass matrices can be calculated with Finite Volume or Source- Sink methods, which, however, require extensive computer calculations with detailed input data. A method is presented with which the Lewis transform can be used to determine a full mass matrix and gives very good agreement with Finite Volume calculations for a test case on a small ship. The Finite Volume calculations have also been used to study damping …
3.	Hallengren, Anders, 1950- (författare) Stirlingmotorn – gårdagens framtidsmotor i morgon? Drivs med vad som helst, tyst och avgasren 1980 Ingår i: Värld och vetande. - 0346-4873. ; 29:7, s. 193-202 Tidskriftsartikel (refereegranskat)abstract An overview and evaluation of the revival of the old Stirling engine in the days of nuclear phase-out and oil crisis. About the new attempts to replace the internal combustion engine with further developed heat engines—systems that convert heat to mechanical energy—with less efficiency and less effective power so far, but more environmental friendly and with a range of applications.
4.	Broberg, Leif, 1955, et al. (författare) A Calculation Method for Ship Stern Flows Using an Analytical Body Fitted Coordinate System 1984 Ingår i: 15th Symposium on Naval Hydrodynamics, Hamburg 1984. ; , s. Code 7423- Konferensbidrag (refereegranskat)abstract A new method for calculating ship stern flows is described. The method is based on the thin boundary layer equations cast in an analytic, body-fitted coordinate system. The major part of the paper deals with the definition and generation of this system and the computation of the related metrics and Christoffel symbols. Derivations of the governing flow equations are also made, using tensor algebra, and a short account is given of the numerical solution method. Finally, results from some test calculations are presented.
5.	Janson, Carl-Erik, 1957, et al. (författare) Ship Flow Calculation Using the PHOENICS Computer Code 1985 Ingår i: Second International Symposium on Ship Viscous Resistance, Gothenburg, 1985. Konferensbidrag (refereegranskat)
6.	Johansson, Lars-Erik, et al. (författare) Calculations of Thick Boundary Layers Using a Streamline Curvature Method 1983 Ingår i: Second Symposium on Numerical and Physical Aspects of Aerodynamic Flows, Long Beach. Konferensbidrag (refereegranskat)
7.	Kim, Keun-Jae, 1957, et al. (författare) Comparison between First and Higher Order Methods for Computing the Boundary Layer and Viscous Resistance of Arbitrary Ship Hulls 1989 Ingår i: Int Symp on Ship Resistance and Powering Performance, Shanghai 1989. Konferensbidrag (refereegranskat)
8.	Larsson, Lars, 1945, et al. (författare) A Study of Ground Simulation - Correlation Between Wind-Tunnel and Water-BasinTests of a Full-Scale Car 1989 Ingår i: Society of Automotive Engineers, Paper 890368, 1989. Konferensbidrag (refereegranskat)
9.	Larsson, Lars, 1945 (författare) Beräkning av segelbåtens prestanda med utgångspunkt från linjeritningen 1981 Ingår i: Sveriges Yachtkonstruktörers Riksförbunds Jubileumssymposium, januari 1981. Konferensbidrag (övrigt vetenskapligt/konstnärligt)
10.	Larsson, Lars, 1945 (författare) Boundary Layer Predictions for the SSPA Model 720 and the HSVA Tanker Using a Fully 3-D Integral Method. 1980 Ingår i: SSPA - ITTC Workshop on Ship Boundary Layer 1980. Konferensbidrag (övrigt vetenskapligt/konstnärligt)

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Typ av publikation: rapport (28); konferensbidrag (24); proceedings (redaktörskap) (4); tidskriftsartikel (4); licentiatavhandling (3); bok (2); visa fler...; doktorsavhandling (1); visa färre...

Typ av innehåll: övrigt vetenskapligt/konstnärligt (43); refereegranskat (23)

Författare/redaktör: Larsson, Lars, 1945 (22); Nordström, Olle (7); Asp, Kenneth (7); Broberg, Leif, 1955 (4); Kim, Keun-Jae, 1957 (4); Xia, Fei, 1943 (4); visa fler...; Sandberg, Ulf, 1946- (3); Turbell, Thomas (3); Lövsund, Per, 1948 (3); Svensson, Mats, 1960 (3); Janson, Carl-Erik, 1 ... (3); Zhang, Dao-Hua, 1946 (3); Johansson, Lars-Erik (2); Aldman, Bertil (2); Sandberg, Ulf (2); Ejsmont, Jerzy A. (2); Seeman, Torsten (2); Örtengren, Tore (2); Helmers, Gabriel (2); Knutsson, K. (1); Danielsson, H. (1); Hansson, Hans (1); Hammar, L (1); Bergdahl, Lars, 1943 (1); Hallengren, Anders, ... (1); Leckner, Bo G, 1936 (1); Lövsund, Per (1); Andersson, Bengt-Åke (1); Wenäll, Jan (1); Ohlsson, Evert (1); Schandersson, Rein (1); Öberg, Gudrun (1); Johansson, Mickey, 1 ... (1); Carlsson, Arne (1); Sundelin, Peter (1); Strandberg, Lennart (1); VTI, . (1); Taryma, Stanislaw (1); Ejsmont, Jerzy (1); Sundelin, J (1); Forsström, Åke (1); Ståhl, P (1); Morén, Bertil (1); Holmdahl, Lars (1); Nilsson, L-U (1); Berndtsson, A (1); Chang, M-S (1); Vijil, Joakim (1); Nilson, Gert, 1961 (1); Terins, Jekabs (1); visa färre...

Lärosäte: VTI - Statens väg- och transportforskningsinstitut (33); Chalmers tekniska högskola (32); Göteborgs universitet (2); Stockholms universitet (1)

Språk: Engelska (42); Svenska (24)

Forskningsämne (UKÄ/SCB): Teknik (66); Medicin och hälsovetenskap (2); Naturvetenskap (1); Samhällsvetenskap (1)

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