109056 20230519145431.0 doi 10.1063/5.0044400 sideral 125238 ART-2021-125238 eng Valiño, Luis (orcid)0000-0002-2384-5896 Quasi-stationarity of scalar turbulent mixing statistics in a non-symmetric case 2021 Access copy available to the general public Unrestricted The existence of an asymptotic shape at large times of the probability density function (PDF) of a non-reacting scalar, mixed by a solenoidal turbulent velocity field and molecular diffusive transport, was investigated by Sinai and Yakhot [Y. G. Sinai and V. Yakhot, “Limiting probability distributions of a passive scalar in a random velocity field,” Phys. Rev. Lett. 63, 1962 (1989)]. The quasi-stationarity of the mixing statistics along the time evolution by Valiño et al. [“Quasistationary probability density functions in the turbulent mixing of a scalar field,” Phys. Rev. Lett. 72, 3518 (1994)] was an extension to symmetric scalar pdfs; analytic solutions for the scalar fluctuation dissipation rates, conditional upon the scalar value, and the pdf were obtained. This manuscript examines the generalization of the latter results to asymmetric scalar pdfs, further scrutinizes underlying mechanisms for a quasi-stationary statistics, and shows a Monte Carlo implementation which allows non-Gaussian relaxations to prescribed values of skweness and kurtosis. info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.98 2021 PHYSICS, FLUIDS & PLASMAS 2 / 34 = 0.059 2021 Q1 T1 MECHANICS 18 / 138 = 0.13 2021 Q1 T1 1.189 2021 Computational Mechanics 2021 Q1 Mechanics of Materials 2021 Q1 Mechanical Engineering 2021 Q1 Condensed Matter Physics 2021 Q1 5.7 2021 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Hierro, Juan (orcid)0000-0002-5821-1666 Mustata, Radu Universidad de Zaragoza (orcid)0000-0001-7472-7542 Dopazo, César Universidad de Zaragoza (orcid)0000-0002-2267-8598 5001 600 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Mecánica de Fluidos 33, 5 (2021), 055109 Phys. fluids Physics of Fluids 1070-6631 637840 http://zaguan.unizar.es/record/109056/files/texto_completo.pdf Postprint 2789264 http://zaguan.unizar.es/record/109056/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:109056 articulos driver 2023-05-18-14:18:39 ARTICLE