A Quasi-Normal Scale Elimination (QNSE) theory of turbulent flows with stable stratification and its application in weather forecast systems

Semion Sukoriansky; Boris Galperin

A Quasi-Normal Scale Elimination (QNSE) theory of turbulent flows with stable stratification and its application in weather forecast systems

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

The QNSE model is a new theory of turbulence with stable and weakly unstable stratification. The model explicitly resolves the stratification-induced disparity between the transport processes in the horizontal and vertical directions and accounts for the combined effect of turbulence and waves. The theory predicts
various important characteristics of stably stratified flows, such as the dependence of the vertical turbulent Prandtl number on Froude and Richardson numbers, anisotropization of the flow filed, and decay of vertical diffusivity under strong stratification, all in good agreement with computational and observational data. The theory also yields analytical expressions for various 1D and 3D kinetic and potential energy spectra that reflect the effects of waves and anisotropy. The model’s results are suitable for immediate use in practical
applications. The QNSE-based K-l model and surface layer parameterization have been implemented and tested in numerical weather prediction systems WRF and HIRLAM.

Original language	English GB
Title of host publication	PROCEEDINGS OF THE 6TH IASME/WSEAS INTERNATIONAL CONFERENCE ON HEAT TRANSFER, THERMAL ENGINEERING AND ENVIRONMENT (HTE'08), PTS I AND II
Pages	376-+
State	Published - 2008

Publication series

Name	WSEAS Mechanical Engineering Series

Keywords

Turbulence
stable stratification
anisotropy
boundary layers

Cite this

Sukoriansky, S., & Galperin, B. (2008). A Quasi-Normal Scale Elimination (QNSE) theory of turbulent flows with stable stratification and its application in weather forecast systems. In PROCEEDINGS OF THE 6TH IASME/WSEAS INTERNATIONAL CONFERENCE ON HEAT TRANSFER, THERMAL ENGINEERING AND ENVIRONMENT (HTE'08), PTS I AND II (pp. 376-+). (WSEAS Mechanical Engineering Series).

Sukoriansky, Semion ; Galperin, Boris. / A Quasi-Normal Scale Elimination (QNSE) theory of turbulent flows with stable stratification and its application in weather forecast systems. PROCEEDINGS OF THE 6TH IASME/WSEAS INTERNATIONAL CONFERENCE ON HEAT TRANSFER, THERMAL ENGINEERING AND ENVIRONMENT (HTE'08), PTS I AND II. 2008. pp. 376-+ (WSEAS Mechanical Engineering Series).

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title = "A Quasi-Normal Scale Elimination (QNSE) theory of turbulent flows with stable stratification and its application in weather forecast systems",

abstract = "The QNSE model is a new theory of turbulence with stable and weakly unstable stratification. The model explicitly resolves the stratification-induced disparity between the transport processes in the horizontal and vertical directions and accounts for the combined effect of turbulence and waves. The theory predictsvarious important characteristics of stably stratified flows, such as the dependence of the vertical turbulent Prandtl number on Froude and Richardson numbers, anisotropization of the flow filed, and decay of vertical diffusivity under strong stratification, all in good agreement with computational and observational data. The theory also yields analytical expressions for various 1D and 3D kinetic and potential energy spectra that reflect the effects of waves and anisotropy. The model{\textquoteright}s results are suitable for immediate use in practicalapplications. The QNSE-based K-l model and surface layer parameterization have been implemented and tested in numerical weather prediction systems WRF and HIRLAM.",

keywords = "Turbulence, stable stratification, anisotropy, boundary layers",

author = "Semion Sukoriansky and Boris Galperin",

year = "2008",

language = "אנגלית",

isbn = "978-960-6766-97-8",

series = "WSEAS Mechanical Engineering Series",

pages = "376--+",

booktitle = "PROCEEDINGS OF THE 6TH IASME/WSEAS INTERNATIONAL CONFERENCE ON HEAT TRANSFER, THERMAL ENGINEERING AND ENVIRONMENT (HTE'08), PTS I AND II",

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A Quasi-Normal Scale Elimination (QNSE) theory of turbulent flows with stable stratification and its application in weather forecast systems. / Sukoriansky, Semion; Galperin, Boris.
PROCEEDINGS OF THE 6TH IASME/WSEAS INTERNATIONAL CONFERENCE ON HEAT TRANSFER, THERMAL ENGINEERING AND ENVIRONMENT (HTE'08), PTS I AND II. 2008. p. 376-+ (WSEAS Mechanical Engineering Series).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

TY - CHAP

T1 - A Quasi-Normal Scale Elimination (QNSE) theory of turbulent flows with stable stratification and its application in weather forecast systems

AU - Sukoriansky, Semion

AU - Galperin, Boris

PY - 2008

Y1 - 2008

N2 - The QNSE model is a new theory of turbulence with stable and weakly unstable stratification. The model explicitly resolves the stratification-induced disparity between the transport processes in the horizontal and vertical directions and accounts for the combined effect of turbulence and waves. The theory predictsvarious important characteristics of stably stratified flows, such as the dependence of the vertical turbulent Prandtl number on Froude and Richardson numbers, anisotropization of the flow filed, and decay of vertical diffusivity under strong stratification, all in good agreement with computational and observational data. The theory also yields analytical expressions for various 1D and 3D kinetic and potential energy spectra that reflect the effects of waves and anisotropy. The model’s results are suitable for immediate use in practicalapplications. The QNSE-based K-l model and surface layer parameterization have been implemented and tested in numerical weather prediction systems WRF and HIRLAM.

AB - The QNSE model is a new theory of turbulence with stable and weakly unstable stratification. The model explicitly resolves the stratification-induced disparity between the transport processes in the horizontal and vertical directions and accounts for the combined effect of turbulence and waves. The theory predictsvarious important characteristics of stably stratified flows, such as the dependence of the vertical turbulent Prandtl number on Froude and Richardson numbers, anisotropization of the flow filed, and decay of vertical diffusivity under strong stratification, all in good agreement with computational and observational data. The theory also yields analytical expressions for various 1D and 3D kinetic and potential energy spectra that reflect the effects of waves and anisotropy. The model’s results are suitable for immediate use in practicalapplications. The QNSE-based K-l model and surface layer parameterization have been implemented and tested in numerical weather prediction systems WRF and HIRLAM.

KW - Turbulence

KW - stable stratification

KW - anisotropy

KW - boundary layers

M3 - פרק

SN - 978-960-6766-97-8

T3 - WSEAS Mechanical Engineering Series

SP - 376-+

BT - PROCEEDINGS OF THE 6TH IASME/WSEAS INTERNATIONAL CONFERENCE ON HEAT TRANSFER, THERMAL ENGINEERING AND ENVIRONMENT (HTE'08), PTS I AND II

ER -

A Quasi-Normal Scale Elimination (QNSE) theory of turbulent flows with stable stratification and its application in weather forecast systems

Abstract

Publication series

Keywords

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Cite this