Turbulent flow through spacer grids in rod bundles

被引：54

作者：

Yang, SK ^{[1
]}

Chung, MK ^{[1
]}

机构：

[1] Korea Atom Energy Res Inst, Thermal Hydraul Safety Res Team, Taejon 305600, South Korea

来源：

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 1998年 / 120卷 / 04期

关键词：

D O I：

10.1115/1.2820739

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effects of the spacer grids with mixing vanes in rod bundles on the turbulent structure were investigated experimentally. The detailed hydraulic characteristics in subchannels of a 5 X 5 rod bundle with mixing spacer grids were measured upstream and downstream of the spacer grid by using a one component LDV(Laser Doppler Velocimetry). Axial velocity and turbulent intensity, skewness factor and flatness factor were measured The turbulence decay behind spacer grids was obtained from measured data. The trend of turbulence decay behaves in a similar way as turbulent flow through mesh grids or screens. Pressure drop measurements were also performed to evaluate the loss coefficient for the spacer grid and the friction factor for a rod bundle.

引用

页码：786 / 791

页数：6

共 12 条

[1]

Blasius H., 1913, ARB ING WES, P131

[2] USE OF A CONTRACTION TO IMPROVE ISOTROPY OF GRID-GENERATED TURBULENCE [J].

COMTEBELLOT, G ;

CORRSIN, S .

JOURNAL OF FLUID MECHANICS, 1966, 25 :657-+

[3]

LAWS EM, 1978, ANN REV FLUID MECH, V10

[4] THE STRUCTURE OF TURBULENCE IN ROD BUNDLES AND THE IMPLICATIONS ON NATURAL MIXING BETWEEN THE SUBCHANNELS [J].

REHME, K .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1992, 35 (02) :567-581

[5] PRESSURE-DROP AND VELOCITY DISTRIBUTION IN ROD BUNDLES WITH SPACER GRIDS [J].

REHME, K ;

TRIPPE, G .

NUCLEAR ENGINEERING AND DESIGN, 1980, 62 (1-3) :349-359

[6] PRESSURE-DROP CORRELATIONS FOR FUEL-ELEMENTS SPACERS [J].

REHME, K .

NUCLEAR TECHNOLOGY, 1973, 17 (01) :15-23

[7]

ROWE DS, 1973, BNWL1757

[8]

SHEN YF, 1991, NUCL ENG DES, V125, P111, DOI 10.1016/0029-5493(91)90071-O

[9] TEMPERATURE-FLUCTUATIONS AND SCALES IN GRID-GENERATED TURBULENCE [J].

SREENIVASAN, KR ;

TAVOULARIS, S ;

HENRY, R ;

CORRSIN, S .

JOURNAL OF FLUID MECHANICS, 1980, 100 (OCT) :597-621

[10]

Tennekes H., 2018, A first course in turbulence

← 1 2 →