TURBULENT FREE-CONVECTION HEAT-TRANSFER FROM VERTICAL PARALLEL PLATES - (EFFECT OF ENTRANCE BELL-MOUTH SHAPE)

被引：15

作者：

KATOH, Y ^{[1
]}

MIYAMOTO, M ^{[1
]}

KURIMA, J ^{[1
]}

KANEYASU, S ^{[1
]}

机构：

[1] NISSHIN STEEL CO LTD,SHIN NANYOU 746,JAPAN

来源：

JSME INTERNATIONAL JOURNAL SERIES II-FLUIDS ENGINEERING HEAT TRANSFER POWER COMBUSTION THERMOPHYSICAL PROPERTIES | 1991年 / 34卷 / 04期

关键词：

FREE CONVECTION; HEAT TRANSFER; PARALLEL PLATE; EFFECT OF ENTRANCE; TURBULENT QUANTITY;

D O I：

10.1299/jsmeb1988.34.4_496

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The streamwise development of turbulence in the free convection flow between vertical parallel plates (5 m long and various spacings B) was experimentally studied. To control inlet disturbance, a bell-mouth entrance was installed at the lower end of the vertical parallel plate channel. The turbulent quantity profiles (velocity, intensity, turbulent heat flux and kinetic energy production) were measured in the vertical channel at heights X (110, 820, 1690, 2630 and 3840 mm) and at spacings B of 50, 100 and 200 mm. The streamwise development of intensity profiles of vertical velocity and the beginning of the transition seem to be closely related to the development vertical velocity profiles through buoyancy effects. The measured profiles of the turbulent kinetic energy production and the turbulent heat fluxes seem to clarify the characteristics of turbulence intensity.

引用

页码：496 / 501

页数：6

共 5 条

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SUZAKI, K ;

UEHARA, H .

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[2]

KATOH Y, 1988, T JPN SOC MECH ENG, V53, P3370

[3]

MIYAMOTO T, 1986, HEAT TRANSFER, V4, P1593

[4]

TO WM, 1986, INT J HEAT MASS TRAN, V29, P573, DOI 10.1016/0017-9310(86)90091-8

[5]

TURUNO S, 1984, 21TH NAT HEAT TRANSF, P610

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