A simple lagrangian PDF model for wall-bounded turbulent flows

Changhoon Lee, Byunggu Kim, Namhyun Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A simple Lagrangian pdf model is proposed with a new numerical algorithm for application in wall-bounded turbulent flows. To investigate the performance of the Lagrangian model, we minimize model's dependence on empirical constants by selecting the simplest model for turbulent dissipation rate. The effect of viscosity is also included by adding a Brownian random walk calculate the position of a particle. For the no-slip condition at the wall and correct near-wall behavior of velocity, we develop a new boundary treatment for the particles that strike the wall. By applying the model to a fully developed turbulent channel flow at low Reynolds number, we investigate the model's performance through comparison with direct numerical simulation result.

Original languageEnglish
Pages (from-to)900-910
Number of pages11
JournalKSME International Journal
Volume14
Issue number8
Publication statusPublished - 2000 Aug 1

Fingerprint

Turbulent flow
Direct numerical simulation
Channel flow
Reynolds number
Viscosity

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Lee, Changhoon ; Kim, Byunggu ; Kim, Namhyun. / A simple lagrangian PDF model for wall-bounded turbulent flows. In: KSME International Journal. 2000 ; Vol. 14, No. 8. pp. 900-910.
@article{64888999ad5549b692d63ae4b56244c8,
title = "A simple lagrangian PDF model for wall-bounded turbulent flows",
abstract = "A simple Lagrangian pdf model is proposed with a new numerical algorithm for application in wall-bounded turbulent flows. To investigate the performance of the Lagrangian model, we minimize model's dependence on empirical constants by selecting the simplest model for turbulent dissipation rate. The effect of viscosity is also included by adding a Brownian random walk calculate the position of a particle. For the no-slip condition at the wall and correct near-wall behavior of velocity, we develop a new boundary treatment for the particles that strike the wall. By applying the model to a fully developed turbulent channel flow at low Reynolds number, we investigate the model's performance through comparison with direct numerical simulation result.",
author = "Changhoon Lee and Byunggu Kim and Namhyun Kim",
year = "2000",
month = "8",
day = "1",
language = "English",
volume = "14",
pages = "900--910",
journal = "KSME International Journal",
issn = "1226-4865",
publisher = "Korean Society of Mechanical Engineers",
number = "8",

}

A simple lagrangian PDF model for wall-bounded turbulent flows. / Lee, Changhoon; Kim, Byunggu; Kim, Namhyun.

In: KSME International Journal, Vol. 14, No. 8, 01.08.2000, p. 900-910.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A simple lagrangian PDF model for wall-bounded turbulent flows

AU - Lee, Changhoon

AU - Kim, Byunggu

AU - Kim, Namhyun

PY - 2000/8/1

Y1 - 2000/8/1

N2 - A simple Lagrangian pdf model is proposed with a new numerical algorithm for application in wall-bounded turbulent flows. To investigate the performance of the Lagrangian model, we minimize model's dependence on empirical constants by selecting the simplest model for turbulent dissipation rate. The effect of viscosity is also included by adding a Brownian random walk calculate the position of a particle. For the no-slip condition at the wall and correct near-wall behavior of velocity, we develop a new boundary treatment for the particles that strike the wall. By applying the model to a fully developed turbulent channel flow at low Reynolds number, we investigate the model's performance through comparison with direct numerical simulation result.

AB - A simple Lagrangian pdf model is proposed with a new numerical algorithm for application in wall-bounded turbulent flows. To investigate the performance of the Lagrangian model, we minimize model's dependence on empirical constants by selecting the simplest model for turbulent dissipation rate. The effect of viscosity is also included by adding a Brownian random walk calculate the position of a particle. For the no-slip condition at the wall and correct near-wall behavior of velocity, we develop a new boundary treatment for the particles that strike the wall. By applying the model to a fully developed turbulent channel flow at low Reynolds number, we investigate the model's performance through comparison with direct numerical simulation result.

UR - http://www.scopus.com/inward/record.url?scp=0007256626&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0007256626&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0007256626

VL - 14

SP - 900

EP - 910

JO - KSME International Journal

JF - KSME International Journal

SN - 1226-4865

IS - 8

ER -