SemOpenAlex |

SemOpenAlex

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2038178740> ?p ?o ?g. }

Showing items 1 to 69 of 69 with 100 items per page.

W2038178740 abstract "Life span assessment is a very important issue for the nuclear community. A serious threat to the life span of a Reactor Pressure Vessel (RPV) is an occurrence of the Pressurized Thermal Shock (PTS) during an Emergency Core Coolant (ECC) injection in a loss-of-coolant accident. Traditional system codes fail to predict the complex three-dimensional flow phenomena resulting from such an ECC injection. Improved results have been obtained using Computational Fluid Dynamics (CFD) analysis based on the Reynolds-Averaged Navier-Stokes (RANS) equations. However, it has been shown also that current transient RANS approaches are less capable to predict complex flow features in the downcomer of the RPV. More advanced CFD methods like Large-Eddy Simulation (LES) are required for modeling of these complex flow phenomena in the downcomer. The current paper addresses the feasibility of the application of LES for single-phase PTS. Furthermore, the required grid resolution for such LES analyses is identified by evaluation of solutions on different meshes. A buoyancy-driven PTS experiment has been considered. This experiment has been performed in the 1:5 linear scale Rossendorf Coolant Mixing Model (ROCOM) facility. In the applied numerical model, the incompressible Navier-Stokes equations are solved in the LES formulation, with an additional transport equation for a scalar, which is responsible for driving the embedded buoyancy term in the momentum equations. Instantaneous mixing characteristics are investigated based on evaluation of the scalar concentration. The analysis presented in this paper indicates that the application of LES is feasible nowadays. It is demonstrated that the mixing in the downcomer is quite sensitive to small turbulent disturbances at the ECC inlet, i.e., two simulations performed with slightly different fluctuations at inlet result in substantially different flow in the downcomer. This complicates the analysis of the data from simulations and suggests that validation against experimental data should not be performed using single physical experiment." @default.
W2038178740 created "2016-06-24" @default.
W2038178740 creator A5044975842 @default.
W2038178740 creator A5072751175 @default.
W2038178740 creator A5079885883 @default.
W2038178740 date "2009-01-01" @default.
W2038178740 modified "2023-09-23" @default.
W2038178740 title "Application of Large-Eddy Simulation to Pressurized Thermal Shock Problem" @default.
W2038178740 doi "https://doi.org/10.1115/icone17-75894" @default.
W2038178740 hasPublicationYear "2009" @default.
W2038178740 type Work @default.
W2038178740 sameAs 2038178740 @default.
W2038178740 citedByCount "1" @default.
W2038178740 countsByYear W20381787402015 @default.
W2038178740 crossrefType "proceedings-article" @default.
W2038178740 hasAuthorship W2038178740A5044975842 @default.
W2038178740 hasAuthorship W2038178740A5072751175 @default.
W2038178740 hasAuthorship W2038178740A5079885883 @default.
W2038178740 hasConcept C116915560 @default.
W2038178740 hasConcept C121332964 @default.
W2038178740 hasConcept C121448008 @default.
W2038178740 hasConcept C127413603 @default.
W2038178740 hasConcept C1633027 @default.
W2038178740 hasConcept C196558001 @default.
W2038178740 hasConcept C2780406361 @default.
W2038178740 hasConcept C32526432 @default.
W2038178740 hasConcept C57879066 @default.
W2038178740 hasConcept C78519656 @default.
W2038178740 hasConcept C84655787 @default.
W2038178740 hasConcept C91914117 @default.
W2038178740 hasConceptScore W2038178740C116915560 @default.
W2038178740 hasConceptScore W2038178740C121332964 @default.
W2038178740 hasConceptScore W2038178740C121448008 @default.
W2038178740 hasConceptScore W2038178740C127413603 @default.
W2038178740 hasConceptScore W2038178740C1633027 @default.
W2038178740 hasConceptScore W2038178740C196558001 @default.
W2038178740 hasConceptScore W2038178740C2780406361 @default.
W2038178740 hasConceptScore W2038178740C32526432 @default.
W2038178740 hasConceptScore W2038178740C57879066 @default.
W2038178740 hasConceptScore W2038178740C78519656 @default.
W2038178740 hasConceptScore W2038178740C84655787 @default.
W2038178740 hasConceptScore W2038178740C91914117 @default.
W2038178740 hasLocation W20381787401 @default.
W2038178740 hasOpenAccess W2038178740 @default.
W2038178740 hasPrimaryLocation W20381787401 @default.
W2038178740 hasRelatedWork W196023102 @default.
W2038178740 hasRelatedWork W1978683353 @default.
W2038178740 hasRelatedWork W1987452863 @default.
W2038178740 hasRelatedWork W1996073856 @default.
W2038178740 hasRelatedWork W1999036772 @default.
W2038178740 hasRelatedWork W2003881353 @default.
W2038178740 hasRelatedWork W2006697539 @default.
W2038178740 hasRelatedWork W2027052505 @default.
W2038178740 hasRelatedWork W2029143962 @default.
W2038178740 hasRelatedWork W2048808514 @default.
W2038178740 hasRelatedWork W2049119514 @default.
W2038178740 hasRelatedWork W2049315230 @default.
W2038178740 hasRelatedWork W2294379722 @default.
W2038178740 hasRelatedWork W2352130557 @default.
W2038178740 hasRelatedWork W2472089690 @default.
W2038178740 hasRelatedWork W2552013454 @default.
W2038178740 hasRelatedWork W3009470149 @default.
W2038178740 hasRelatedWork W3106487446 @default.
W2038178740 hasRelatedWork W3116518166 @default.
W2038178740 hasRelatedWork W349054484 @default.
W2038178740 isParatext "false" @default.
W2038178740 isRetracted "false" @default.
W2038178740 magId "2038178740" @default.
W2038178740 workType "article" @default.