Boundary Layer Separation Under Strong Adverse Pressure Gradient over Smooth and Rough Walls

被引：4

作者：

Mottaghian, Pouya ^{[1
]}

Yuan, Junlin ^{[2
]}

Piomelli, Ugo ^{[1
]}

机构：

[1] Queens Univ, Dept Mech & Mat Engn, Kingston, ON, Canada

[2] Michigan State Univ, Dept Mech Engn, E Lansing, MI 48824 USA

来源：

DIRECT AND LARGE-EDDY SIMULATION X | 2018年 / 24卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

DIRECT NUMERICAL-SIMULATION; FLOW;

D O I：

10.1007/978-3-319-63212-4_21

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Large eddy simulations of separated turbulent boundary layers over a flat plate were performed to study the effects of wall roughness. Rough-wall cases have a larger separation bubble with both earlier separation and later reattachment. Roughness leads to early flow reversal upstream of the real separation. © 2018, Springer International Publishing AG.

引用

页码：173 / 179

页数：7

共 14 条

[1] Turbulence measurements around a mild separation bubble and downstream of reattachment [J].

Alving, AE ;

Fernholz, HH .

JOURNAL OF FLUID MECHANICS, 1996, 322 :297-328

[2] Experimental study on roughness effects on turbulent boundary layer flow over a two-dimensional steep hill [J].

Cao, SY ;

Tamura, T .

JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 2006, 94 (01) :1-19

[3] Large-eddy simulation of heat transfer downstream of a backward-facing step [J].

Keating, A ;

Piomelli, U ;

Bremhorst, K ;

Nesic, S .

JOURNAL OF TURBULENCE, 2004, 5

[4] Generation of turbulent inflow data for spatially-developing boundary layer simulations [J].

Lund, TS ;

Wu, XH ;

Squires, KD .

JOURNAL OF COMPUTATIONAL PHYSICS, 1998, 140 (02) :233-258

[5] A Lagrangian dynamic subgrid-scale model of turbulence [J].

Meneveau, C ;

Lund, TS ;

Cabot, WH .

JOURNAL OF FLUID MECHANICS, 1996, 319 :353-385

[6] Direct numerical simulation of a separated turbulent boundary layer [J].

Na, Y ;

Moin, P .

JOURNAL OF FLUID MECHANICS, 1998, 370 :175-201

[7] SIMPLE BOUNDARY-CONDITION FOR UNBOUNDED HYPERBOLIC FLOWS [J].

ORLANSKI, I .

JOURNAL OF COMPUTATIONAL PHYSICS, 1976, 21 (03) :251-269

[8] STUDY OF TURBULENT BOUNDARY-LAYER SEPARATION AND REATTACHMENT [J].

PERRY, AE ;

FAIRLIE, BD .

JOURNAL OF FLUID MECHANICS, 1975, 69 (JUN24) :657-672

[9] Direct numerical simulation of turbulent channel flows with boundary roughened with virtual sandpaper [J].

Scotti, A .

PHYSICS OF FLUIDS, 2006, 18 (03)

[10] Direct numerical simulation of a separated turbulent boundary layer [J].

Skote, M ;

Henningson, DS .

JOURNAL OF FLUID MECHANICS, 2002, 471 :107-136

← 1 2 →