Matches in SemOpenAlex for { <https://semopenalex.org/work/W3091625638> ?p ?o ?g. }
- W3091625638 abstract "In the present work, a deterministic approach is applied for the first time ever to simulate the rarefied gas flow in the particle exhaust system of a nuclear fusion device. As an example of such a system, the pumping area of the DEMO (DEMOnstration Fusion Power Plant) fusion reactor is considered, which is characterized by high geometrical complexity and strong gradients of macroscopic quantities. The Knudsen number in this system may vary from free molecular up to the slip regime and the flow behavior must be described by the Boltzmann equation. In the present work, the Boltzmann equation is approximated by the well-known Bhatnagar–Gross–Krook and Shakhov kinetic models supplemented with the deterministic discrete velocity method. In addition, in order to assess the capabilities of the deterministic modeling, the problem has also been studied by solving the Boltzmann equation with the stochastic direct simulation Monte Carlo (DSMC) method. Extended comparisons between the deterministic and stochastic methods in terms of all macroscopic quantities of practical interest, namely, pressure, number density, temperature, and pumping fluxes, are performed and remarks about the effectiveness of the implemented deterministic approach have been drawn. Results are obtained by assuming He and D2 gas flows, various values of the capture coefficient at the pumping opening, and two different scenarios of the inlet gas temperature. In all examined cases, the deterministic results are in very good agreement with the DSMC ones, with the maximum relative deviation being less than 4%. The nonlinear deterministic code is significantly faster than the stochastic DSMC code for acceptable noise levels. The pumping fluxes and the pressure values in the vicinity of the pumping opening, both quantities useful for pumping system evaluation, have been calculated in terms of the capture coefficient. The present work may support decision making on the suitability of the pumping technology of DEMO and the design of the pumping system." @default.
- W3091625638 created "2020-10-08" @default.
- W3091625638 creator A5026036639 @default.
- W3091625638 creator A5040217868 @default.
- W3091625638 creator A5050302455 @default.
- W3091625638 date "2020-09-30" @default.
- W3091625638 modified "2023-10-16" @default.
- W3091625638 title "Deterministic and stochastic modeling of rarefied gas flows in fusion particle exhaust systems" @default.
- W3091625638 cites W1966669597 @default.
- W3091625638 cites W1976076339 @default.
- W3091625638 cites W1992035660 @default.
- W3091625638 cites W2008003005 @default.
- W3091625638 cites W2018425611 @default.
- W3091625638 cites W2020733228 @default.
- W3091625638 cites W2024268126 @default.
- W3091625638 cites W2024894802 @default.
- W3091625638 cites W2034883975 @default.
- W3091625638 cites W2042624429 @default.
- W3091625638 cites W2057173004 @default.
- W3091625638 cites W2057347740 @default.
- W3091625638 cites W2065336309 @default.
- W3091625638 cites W2066060292 @default.
- W3091625638 cites W2072768377 @default.
- W3091625638 cites W2079640878 @default.
- W3091625638 cites W2083597099 @default.
- W3091625638 cites W2084816142 @default.
- W3091625638 cites W2086700458 @default.
- W3091625638 cites W2093774253 @default.
- W3091625638 cites W2096529920 @default.
- W3091625638 cites W2100201447 @default.
- W3091625638 cites W2113388688 @default.
- W3091625638 cites W2118783842 @default.
- W3091625638 cites W2121268992 @default.
- W3091625638 cites W2157072188 @default.
- W3091625638 cites W2196317432 @default.
- W3091625638 cites W2233421565 @default.
- W3091625638 cites W2274195628 @default.
- W3091625638 cites W2414366353 @default.
- W3091625638 cites W2554849368 @default.
- W3091625638 cites W2573135939 @default.
- W3091625638 cites W2607076960 @default.
- W3091625638 cites W2610419497 @default.
- W3091625638 cites W2621145965 @default.
- W3091625638 cites W2721675520 @default.
- W3091625638 cites W2766233129 @default.
- W3091625638 cites W2772213874 @default.
- W3091625638 cites W2799646192 @default.
- W3091625638 cites W2804151063 @default.
- W3091625638 cites W282307699 @default.
- W3091625638 cites W2916369674 @default.
- W3091625638 cites W2964523436 @default.
- W3091625638 cites W2979730411 @default.
- W3091625638 cites W3101906194 @default.
- W3091625638 cites W775981707 @default.
- W3091625638 cites W2043296531 @default.
- W3091625638 doi "https://doi.org/10.1116/6.0000491" @default.
- W3091625638 hasPublicationYear "2020" @default.
- W3091625638 type Work @default.
- W3091625638 sameAs 3091625638 @default.
- W3091625638 citedByCount "3" @default.
- W3091625638 countsByYear W30916256382021 @default.
- W3091625638 countsByYear W30916256382022 @default.
- W3091625638 countsByYear W30916256382023 @default.
- W3091625638 crossrefType "journal-article" @default.
- W3091625638 hasAuthorship W3091625638A5026036639 @default.
- W3091625638 hasAuthorship W3091625638A5040217868 @default.
- W3091625638 hasAuthorship W3091625638A5050302455 @default.
- W3091625638 hasConcept C105795698 @default.
- W3091625638 hasConcept C121332964 @default.
- W3091625638 hasConcept C121838276 @default.
- W3091625638 hasConcept C121864883 @default.
- W3091625638 hasConcept C122592724 @default.
- W3091625638 hasConcept C127491075 @default.
- W3091625638 hasConcept C164916747 @default.
- W3091625638 hasConcept C165995430 @default.
- W3091625638 hasConcept C18762648 @default.
- W3091625638 hasConcept C19499675 @default.
- W3091625638 hasConcept C33923547 @default.
- W3091625638 hasConcept C35304006 @default.
- W3091625638 hasConcept C38349280 @default.
- W3091625638 hasConcept C57879066 @default.
- W3091625638 hasConcept C97355855 @default.
- W3091625638 hasConceptScore W3091625638C105795698 @default.
- W3091625638 hasConceptScore W3091625638C121332964 @default.
- W3091625638 hasConceptScore W3091625638C121838276 @default.
- W3091625638 hasConceptScore W3091625638C121864883 @default.
- W3091625638 hasConceptScore W3091625638C122592724 @default.
- W3091625638 hasConceptScore W3091625638C127491075 @default.
- W3091625638 hasConceptScore W3091625638C164916747 @default.
- W3091625638 hasConceptScore W3091625638C165995430 @default.
- W3091625638 hasConceptScore W3091625638C18762648 @default.
- W3091625638 hasConceptScore W3091625638C19499675 @default.
- W3091625638 hasConceptScore W3091625638C33923547 @default.
- W3091625638 hasConceptScore W3091625638C35304006 @default.
- W3091625638 hasConceptScore W3091625638C38349280 @default.
- W3091625638 hasConceptScore W3091625638C57879066 @default.
- W3091625638 hasConceptScore W3091625638C97355855 @default.
- W3091625638 hasFunder F4320337670 @default.
- W3091625638 hasIssue "6" @default.
- W3091625638 hasLocation W30916256381 @default.