203 research outputs found
Letter of recommendation from W. J. Lauritzen, Assoc. Construction Supt. at Tule Lake Project for Mr. Lawrence Asoo, September 10, 1943
No full textLetter from W. J. Lauritzen, Associate Construction Superintendent at Tule Lake to Whom It May Concern introducing Mr. Lawrence Asoo and praising his work as a landscape gardener foreman at Tule Lake in the Maintenance Unit.Bunzo Asoo was born in 1897 in Hiroshima, Japan. Haruye Asoo was born in 1982 in Okinawa, Japan. He immigrated to the U.S. in 1914 and helped his father on a farm in Vorden, California. In 1915, Bunzo went to an English language school in San Francisco. In 1920, he returned to Japan for an arranged marriage with Haruye. They had seven children. They farmed in the Sacramento area during the 1920s and 30. In May 1942, the family was forced to evacuate to Arboga Assembly Center, then to Tule Lake and Topaz Relocation Centers. The Asoo's returned to Sacramento in 1945, where Bunzo became a landscape gardener
Forskere og ingeniør svarer igen:Mindre CO2 og høj forsyningssikkerhed kræver, at vi ser på alle muligheder – også atomkraft
No full textForfatterne bag notatet 'Fakta om atomkraft i Danmark' har taget til genmæle, men vores kritik bliver essentielt set ikke adresseret. Meningen kan ikke være at få en på forhånd udvalgt version af den grønne omstilling til at lykkes, men at se bredt på mulighederne, skriver Hans Uldall Fynbo, Bent Lauritzen, Rasmus Toft-Petersen og Paul-Frederik Bach
Modelling and CFD analysis of the DYNASTY loop facility
No full textIn this paper, CFD assessment of the DYNASTY natural circulation loop, adopting a RANS turbulence modeling approach, is performed using the OpenFOAM open source toolbox. The DYNASTY facility is designed to investigate the stability and dynamics of heat-generating fluids, in particular molten salts, in a natural or forced circulation regime and as such, it is one-of-a-kind, large scale facility for studying the natural circulation in presence of distributed heating. In this work, a CFD model of the facility is set up and validated by comparing the model results to experimental data obtained during the initial testing campaign of the facility, with water as working fluid. In particular, the equilibrium state of the system is investigated in terms of the mass flow dynamic behaviour and the temperature difference across the cooler section of the loop. It is shown that the CFD simulations adopting the k − ω SST turbulence model best reflect the experimental results. The CFD results are also in agreement with a simplified 1D modeling as well as an analytical solution
Numerical dataset belonging to: 'A numerical benchmark for modelling phase change in molten salt reactors'
No full textThis folder contains the numerical data belonging to the paper 'A numerical benchmark for modelling phase change in molten salt reactors' (Mateusz Pater, Bouke Kaaks, Bent Lauritzen, Danny Lathouwers), submitted to Annals of Nuclear Energy in 2023. Please cite this paper when publishing work referring to or including (part of) this data set. The data set includes all raw simulation data, including the extracted melt fronts and temperature and velocity profiles used for generating the figures in the paper. The format of the data generated with OpenFOAM and Star CCM+ is .csv, which can be opened by excel, a text editor or another suitable data reader. The format of the data generated by DGFlows is .msh for the raw simulation output and .pos for the extracted profiles, both of which may be opened by GMSH (the open source mesh generator and postprocessing tool for FEM simulations), or a text editor
Comparison of Lauritzen-Spiegelhalter and successive restrictions algorithms for computing probability distributions in Bayesian networks
No full text© 2016 Author(s). The basic task of any probabilistic inference system in Bayesian networks is computing the posterior probability distribution for a subset or subsets of random variables, given values or evidence for some other variables from the same Bayesian network. Many methods and algorithms have been developed to exact and approximate inference in Bayesian networks. This work compares two exact inference methods in Bayesian networks-Lauritzen-Spiegelhalter and the successive restrictions algorithm-from the perspective of computational efficiency. The two methods were applied for comparison to a Chest Clinic Bayesian Network. Results indicate that the successive restrictions algorithm shows more computational efficiency than the Lauritzen-Spiegelhalter algorithm
Kernekraft og nuklear sikkerhed 2011
No full textRapporten er den niende rapport i en serie af årlige rapporter om kernekraft og nuklear sikkerhed. Rapporten er udarbejdet af medar-bejdere ved Risø DTU og Beredskabsstyrelsen. Den omhandler den internationale udvikling inden for kernekraft med særlig vægt på sikkerhedsmæssige forhold og nukleart beredskab. Rapporten for 2011 dækker følgende emner: Kernekraft efter Fukushima, status for kernekraftens el-produktion, regionale tendenser, reaktorudvik-ling, beredskabssystemer, sikkerhedsrelaterede hændelser ved ker-nekraft, Fukushima-ulykken samt internationale forhold og konflik-ter
Kernekraft og nuklear sikkerhed 2007
No full textRapporten er den femte rapport i en serie af årlige rapporter om kernekraft og nuklear sikkerhed. Rapporten er udarbejdet af medar-bejdere ved Risø DTU og Beredskabsstyrelsen. Den omhandler den internationale udvikling inden for kernekraft med særlig vægt på sikkerhedsmæssige forhold og nukleart beredskab. Rapporten for 2007 dækker følgende emner: Status for kernekraftens el-produktion, regionale tendenser, reaktorudvikling, sikkerhedsrelate-rede hændelser ved kernekraft samt internationale forhold og kon-flikter
Kernekraft og nuklear sikkerhed 2006
No full textRapporten er den fjerde rapport i en serie af årlige rapporter om kernekraft og nuklear sikkerhed. Rapporten er udarbejdet af medarbejdere ved Forskningscenter Risø og Beredskabsstyrelsen og omhandler den internationale udvikling inden for kernekraft med sær-lig vægt på sikkerhedsmæssige forhold og nukleart beredskab. Rapporten for 2006 dækker følgende emner: Status for kernekraftens el-produktion, regionale tendenser, udvikling af nye reaktorer og beredskabssystemer, sikkerhedsrelaterede hændelser ved kernekraft samt internationale forhold og konflikter
Kernekraft og nuklear sikkerhed 2008
No full textRapporten er den sjette rapport i en serie af årlige rapporter om kernekraft og nuklear sikkerhed. Rapporten er udarbejdet af medarbejdere ved Risø DTU og Beredskabsstyrelsen. Den omhandler den internationale udvikling inden for kernekraft med særlig vægt på sikkerhedsmæssige forhold og nukleart beredskab. Rapporten for 2008 dækker følgende emner: Status for kernekraftens el-produktion, regionale tendenser, reaktorudvikling, beredskabssystemer, sikkerhedsrelaterede hændelser ved kernekraft samt internationale forhold og konflikter
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