Large-eddy simulation of wall bounded shear flow using the nonlinear disturbance equations

Thomas S. Chyczewski, Philip John Morris, Lyle Norman Long

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

The potential benefits of using the Nonlinear Disturbance (NLD) equations, which govern flow variable fluctuations about an estimated mean, for the large-eddy simulation (LES) of wall bounded shear flows are investigated in this paper. In addition to verifying the suitability of the NLD equations for wall bounded flows, we build upon its advantages by introducing a new wall model that is easily and efficiently implemented within the NLD equation framework. The model implementation consists of defining a near wall region in which a modified linear set of equations arc solved. The linear equation set allows disturbances to pass through and interact with the wall without altering the estimated mean. The streamwise and spanwise grid resolution of this near wall region can therefore be significantly relaxed while maintaining reasonable mean quantities such as skin friction. Comparisons of predicted turbulence intensity profiles and wall pressure spectra to experimental data for a fully developed turbulent flat plate boundary layer are used to verify the suitability of the NLD equations for wall bounded flows. Preliminary results of a turbulent channel flow simulation are also presented to assess the new wall model.

Original languageEnglish (US)
StatePublished - Dec 1 2000
Event6th Aeroacoustics Conference and Exhibit, 2000 - Lahaina, HI, United States
Duration: Jun 12 2000Jun 14 2000

Other

Other6th Aeroacoustics Conference and Exhibit, 2000
CountryUnited States
CityLahaina, HI
Period6/12/006/14/00

Fingerprint

Large eddy simulation
large eddy simulation
Shear flow
shear flow
Wall flow
disturbances
wall flow
Skin friction
Flow simulation
Channel flow
Linear equations
Boundary layers
Turbulence
wall pressure
skin friction
linear equations
channel flow
flat plates
boundary layers
arcs

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Acoustics and Ultrasonics

Cite this

Chyczewski, T. S., Morris, P. J., & Long, L. N. (2000). Large-eddy simulation of wall bounded shear flow using the nonlinear disturbance equations. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.
Chyczewski, Thomas S. ; Morris, Philip John ; Long, Lyle Norman. / Large-eddy simulation of wall bounded shear flow using the nonlinear disturbance equations. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.
@conference{10d8fa5e795e464aa433f08fb4ed1ecc,
title = "Large-eddy simulation of wall bounded shear flow using the nonlinear disturbance equations",
abstract = "The potential benefits of using the Nonlinear Disturbance (NLD) equations, which govern flow variable fluctuations about an estimated mean, for the large-eddy simulation (LES) of wall bounded shear flows are investigated in this paper. In addition to verifying the suitability of the NLD equations for wall bounded flows, we build upon its advantages by introducing a new wall model that is easily and efficiently implemented within the NLD equation framework. The model implementation consists of defining a near wall region in which a modified linear set of equations arc solved. The linear equation set allows disturbances to pass through and interact with the wall without altering the estimated mean. The streamwise and spanwise grid resolution of this near wall region can therefore be significantly relaxed while maintaining reasonable mean quantities such as skin friction. Comparisons of predicted turbulence intensity profiles and wall pressure spectra to experimental data for a fully developed turbulent flat plate boundary layer are used to verify the suitability of the NLD equations for wall bounded flows. Preliminary results of a turbulent channel flow simulation are also presented to assess the new wall model.",
author = "Chyczewski, {Thomas S.} and Morris, {Philip John} and Long, {Lyle Norman}",
year = "2000",
month = "12",
day = "1",
language = "English (US)",
note = "6th Aeroacoustics Conference and Exhibit, 2000 ; Conference date: 12-06-2000 Through 14-06-2000",

}

Chyczewski, TS, Morris, PJ & Long, LN 2000, 'Large-eddy simulation of wall bounded shear flow using the nonlinear disturbance equations' Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States, 6/12/00 - 6/14/00, .

Large-eddy simulation of wall bounded shear flow using the nonlinear disturbance equations. / Chyczewski, Thomas S.; Morris, Philip John; Long, Lyle Norman.

2000. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Large-eddy simulation of wall bounded shear flow using the nonlinear disturbance equations

AU - Chyczewski, Thomas S.

AU - Morris, Philip John

AU - Long, Lyle Norman

PY - 2000/12/1

Y1 - 2000/12/1

N2 - The potential benefits of using the Nonlinear Disturbance (NLD) equations, which govern flow variable fluctuations about an estimated mean, for the large-eddy simulation (LES) of wall bounded shear flows are investigated in this paper. In addition to verifying the suitability of the NLD equations for wall bounded flows, we build upon its advantages by introducing a new wall model that is easily and efficiently implemented within the NLD equation framework. The model implementation consists of defining a near wall region in which a modified linear set of equations arc solved. The linear equation set allows disturbances to pass through and interact with the wall without altering the estimated mean. The streamwise and spanwise grid resolution of this near wall region can therefore be significantly relaxed while maintaining reasonable mean quantities such as skin friction. Comparisons of predicted turbulence intensity profiles and wall pressure spectra to experimental data for a fully developed turbulent flat plate boundary layer are used to verify the suitability of the NLD equations for wall bounded flows. Preliminary results of a turbulent channel flow simulation are also presented to assess the new wall model.

AB - The potential benefits of using the Nonlinear Disturbance (NLD) equations, which govern flow variable fluctuations about an estimated mean, for the large-eddy simulation (LES) of wall bounded shear flows are investigated in this paper. In addition to verifying the suitability of the NLD equations for wall bounded flows, we build upon its advantages by introducing a new wall model that is easily and efficiently implemented within the NLD equation framework. The model implementation consists of defining a near wall region in which a modified linear set of equations arc solved. The linear equation set allows disturbances to pass through and interact with the wall without altering the estimated mean. The streamwise and spanwise grid resolution of this near wall region can therefore be significantly relaxed while maintaining reasonable mean quantities such as skin friction. Comparisons of predicted turbulence intensity profiles and wall pressure spectra to experimental data for a fully developed turbulent flat plate boundary layer are used to verify the suitability of the NLD equations for wall bounded flows. Preliminary results of a turbulent channel flow simulation are also presented to assess the new wall model.

UR - http://www.scopus.com/inward/record.url?scp=84894626668&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84894626668&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84894626668

ER -

Chyczewski TS, Morris PJ, Long LN. Large-eddy simulation of wall bounded shear flow using the nonlinear disturbance equations. 2000. Paper presented at 6th Aeroacoustics Conference and Exhibit, 2000, Lahaina, HI, United States.