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Effects of Synthetic Turbulent Boundary Layer on Fluctuating Pressure on the Wall
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합성난류경계층이 벽면에서의 변동압력에 미치는 영향

논문 기본 정보

Type
Academic journal
Author
Y.W. Yi (Pusan Nat. Univ.) D.S. Lee (Agency for Defense Dev.) K.K. Shin (Agency for Defense Dev.) C.S. Hong (Ulsan College,) H.C. Lim (Pusan Nat. Univ.)
Journal
The Korean Society Of Visualization Journal of The Korean Society of Visualization Vol.19 No.3 KCI Accredited Journals
Published
2021.12
Pages
92 - 98 (7page)

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Effects of Synthetic Turbulent Boundary Layer on Fluctuating Pressure on the Wall
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Research history (5)

2022

Characteristics of Wall Pressure Fluctuations Beneath Fully Developed Turbulent Boundary Layers
Y. W. Yi ,  D. S. Lee ,  K. K. Shin and others 2 한국가시화정보학회 학술발표대회 논문집 2022.05 Proceeding

2021

Effects of Synthetic Turbulent Boundary Layer on Fluctuating Pressure on the Wall
Y.W. Yi ,  D.S. Lee ,  K.K. Shin and others 2 Journal of The Korean Society of Visualization 2021.12 Academic journal

2020

Study of the Turbulent Boudnary Layer Development under Periodic Synthetic Inflow
Y. W. Yi ,  H. C. Lim 한국가시화정보학회 학술발표대회 논문집 2020.11 Proceeding
Effects of Oscillating Synthetic Inflow on Turbulent Boundary Layer
Yi Young Woo ,  LIM Hee-Chang 풍력에너지저널 2020.01 Academic journal

2019

Study of Fully Development of Inlet Boundary Layer with Harmonic Change
이영우 기계공학부 2019.01 Thesis
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Abstract· Keywords

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Large Eddy Simulation (LES) has been popularly applied and used in the last several decades to simulate turbulent boundary layer in the numerical domain. A fully developed turbulent boundary layer has also been applied to predict the complicated wake flow behind bluff bodies. In this study we aimed to generate an artificial turbulent boundary layer, which is based on an exponential correlation function, and generates a series of realistic three-dimensional velocity data in two-dimensional inlet section which are correlated both in space and in time. The results suggest its excellent capability for high Reynolds number flows. To make an effective generation, a hexahedral mesh has been used and Cholesky decomposition was applied to possess suitable turbulent statistics such as the randomness and correlation of turbulent flow. As a result, the flow characteristics in the domain and fluctuating pressure near the wall are very close to those of fully developed turbulent boundary layers.
#Turbulent Boundary Layer(난류경계층) #Synthetic Inflow(인공입구유동) #Channel Flow(채널유동) #Fluctuating Pressure(변동압력) #Corcos Model(코코스 모델)

Contents

Abstract
1. 서론
2. 수치해석 기법
3. 결과 및 토의
4. 결론
REFERENCE

References (18)

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Kovasznay, L. S. / 1970 / Turbulent Boundary Layer / Annual Review of Fluid Mechanics 2(1):95~112 google schola Willmarth, W. W. / 1975 / Pressure Fluctuations beneath Turbulent Boundary Layers / Annual Review of Fluid Mechanics 7(1):13~38 google schola Kline, S. J. / 1979 / The structure of turbulent boundary layers / Journal of Fluid Mechanics 30(4):741~773 google schola Sreenivasan, K. R. / 1989 / Frontiers in experimental fluid mechanics / Springer :159~209 google schola Kline, S. J. / 1990 / Quasiꠓcoherent structures in the turbulent boundary layer. I-Status report on a community-wide summary of the data / Near-wall turbulence :200~217 google schola

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