An experimental and numerical study of the flow past elliptic cylinder arrays

被引：23

作者：

Castiglia, D ^{[1
]}

Balabani, S ^{[1
]}

Papadakis, G ^{[1
]}

Yianneskis, M ^{[1
]}

机构：

[1] Kings Coll London, Dept Mech Engn, Expt & Computat Lab Anal Turbulence, London WC2R 2LS, England

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE | 2001年 / 215卷 / 11期

关键词：

elliptic cylinders; heat exchangers; LDA; turbulence; LES; CFD;

D O I：

10.1243/0954406011524658

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The subcritical flow over an array of elliptic cylinders with an axis ratio of 1 :2 was studied both experimentally and numerically. The mean velocities, turbulence levels and the vortex dynamics of the array were determined experimentally by flow visualization and using a laser Doppler anemometer (LDA) and the flow was modelled using three-dimensional large eddy simulation (LES). The experimental results were compared with results obtained previously using circular cylinders and with numerical predictions of the flow. The study indicated that the flow past such a widely spaced array is characterized by low turbulence levels and poor lateral mixing compared with conventional circular cylinder arrays, and a weak flow periodicity with a constant Strouhal number of 0.11 was detected in downstream rows. The predicted mean and r.m.s. velocities, as well as the flow periodicity, were in good agreement with the experimental results.

引用

页码：1287 / 1301

页数：15

共 24 条

[1] An experimental study of the mean flow and turbulence structure of cross-flow over tube bundles [J].

Balabani, S ;

Yianneskis, M .

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 1996, 210 (04) :317-331

[2]

BALABANI S, 1996, THESIS U LONDON

[3] Numerical evaluation of alternate tube configurations for particle deposition rate reduction in heat exchanger tube bundles [J].

Bouris, D ;

Papadakis, G ;

Bergeles, G .

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2001, 22 (05) :525-536

[4] A practical method for numerical evaluation of solutions of partial differential equations of the heat-conduction type [J].

Crank, J ;

Nicolson, P .

ADVANCES IN COMPUTATIONAL MATHEMATICS, 1996, 6 (3-4) :207-226

[5] EFFECTS OF FREE-STREAM TURBULENCE INTENSITY ON HEAT AND MASS TRANSFERS AT THE SURFACE OF A CIRCULAR-CYLINDER AND AN ELLIPTIC CYLINDER, AXIS RATIO 4 [J].

KONDJOYAN, A ;

DAUDIN, JD .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1995, 38 (10) :1735-1749

[6] On the flow and vortex shedding characteristics of an in-line tube bundle in steady and pulsating crossflow [J].

Konstantinidis, E ;

Castiglia, D ;

Balabani, S ;

Yianneskis, M .

CHEMICAL ENGINEERING RESEARCH & DESIGN, 2000, 78 (A8) :1129-1138

[7]

KONSTANTINIDIS E, 2000, P 10 INT S APPL LAS

[8]

LAURENCE D, 1997, LECT SERIES 1997 03

[9]

Li QL, 1997, CHEM TECH-LEIPZIG, V49, P183

[10]

Lilly D.K., 1967, IBM Form, P195, DOI DOI 10.5065/D62R3PMM

← 1 2 3 →