Modification of k-ε Model for Sensible Heat and Momentum Flux Reconstruction from Surface Temperature Data

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Modification of k-ε Model for Sensible Heat and Momentum Flux Reconstruction from Surface Temperature Data. / Hrebtov, Michael; Bobrov, Maxim.

в: Atmosphere, Том 13, № 7, 1146, 07.2022.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{f9645dae69bb4b528a604d14b84d8847,

title = "Modification of k-ε Model for Sensible Heat and Momentum Flux Reconstruction from Surface Temperature Data",

abstract = "We present a modified (Formula presented.) model with a set of wall-functions suitable for reconstruction of sensible heat and momentum fluxes from the observations data (e.g., surface temperature evolution during the diurnal cycle). The modification takes into account stability and buoyancy effects in the Reynolds stress parametrization which affects turbulence production and turbulent heat flux. The single-cell and single-column versions of the model are presented. The model is tested based on CASES-99 observations data for dry ABL. It is shown that the presented modification improves the predictions of sensible heat flux magnitude and leads to a faster onset of a daytime instability, compared to the non-modified (Formula presented.) model and its scale-limited modification based on Monin-Obukhov similarity theory.",

keywords = "buoyancy, diurnal cycle, k − ε model, RANS, sensible heat flux",

author = "Michael Hrebtov and Maxim Bobrov",

note = "Funding Information: The study was supported by the Ministry of Science and Higher Education of the Russian Federation (agreement No. 075-15-2020-806). Publisher Copyright: {\textcopyright} 2022 by the authors.",

year = "2022",

month = jul,

doi = "10.3390/atmos13071146",

language = "English",

volume = "13",

journal = "Atmosphere",

issn = "2073-4433",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "7",

}

RIS

TY - JOUR

T1 - Modification of k-ε Model for Sensible Heat and Momentum Flux Reconstruction from Surface Temperature Data

AU - Hrebtov, Michael

AU - Bobrov, Maxim

PY - 2022/7

Y1 - 2022/7

N2 - We present a modified (Formula presented.) model with a set of wall-functions suitable for reconstruction of sensible heat and momentum fluxes from the observations data (e.g., surface temperature evolution during the diurnal cycle). The modification takes into account stability and buoyancy effects in the Reynolds stress parametrization which affects turbulence production and turbulent heat flux. The single-cell and single-column versions of the model are presented. The model is tested based on CASES-99 observations data for dry ABL. It is shown that the presented modification improves the predictions of sensible heat flux magnitude and leads to a faster onset of a daytime instability, compared to the non-modified (Formula presented.) model and its scale-limited modification based on Monin-Obukhov similarity theory.

AB - We present a modified (Formula presented.) model with a set of wall-functions suitable for reconstruction of sensible heat and momentum fluxes from the observations data (e.g., surface temperature evolution during the diurnal cycle). The modification takes into account stability and buoyancy effects in the Reynolds stress parametrization which affects turbulence production and turbulent heat flux. The single-cell and single-column versions of the model are presented. The model is tested based on CASES-99 observations data for dry ABL. It is shown that the presented modification improves the predictions of sensible heat flux magnitude and leads to a faster onset of a daytime instability, compared to the non-modified (Formula presented.) model and its scale-limited modification based on Monin-Obukhov similarity theory.

KW - buoyancy

KW - diurnal cycle

KW - k − ε model

KW - RANS

KW - sensible heat flux

UR - http://www.scopus.com/inward/record.url?scp=85135724588&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/f4b34933-e71a-35f6-8e6d-c3a1f671994a/

U2 - 10.3390/atmos13071146

DO - 10.3390/atmos13071146

M3 - Article

AN - SCOPUS:85135724588

VL - 13

JO - Atmosphere

JF - Atmosphere

SN - 2073-4433

IS - 7

M1 - 1146

ER -

ID: 36845217