سیویلیکا را در شبکه های اجتماعی دنبال نمایید.

Numerical Study of Turbulent Air Flow through the 180 Degree Oscillating Circular- Sectioned Bend

Publish Year: 1388
Type: Conference paper
Language: English
View: 1,628

This Paper With 6 Page And PDF Format Ready To Download

Export:

Link to this Paper:

Document National Code:

ICHEC06_053

Index date: 23 September 2009

Numerical Study of Turbulent Air Flow through the 180 Degree Oscillating Circular- Sectioned Bend abstract

The unsteady developing turbulent air flow, through oscillating circular-sectioned curved pipe with the angle of 180° was investigated numerically. The bend had a diameter of 106 mm and a curvature radius ratio of 6.0 with long, straight upstream and downstream tubes. Results of the mean velocity and static pressure were obtained at a Reynolds number of 31200 and at various longitudinal stations. The velocity of the primary flow was illustrated in the form of contour map. In the inlet plane of the bend, the pressure gradient increases along the outer wall and decreases along the inner wall. Therefore, the fluid near the inner wall is accelerated and that near the outer wall is decelerated. In this bend the elliptic curves of velocity contour were observed from φ=120° to φ=150°. In these portions, the faster fluid near the inner wall was moved by the secondary flow towards the outer wall through the central region of the cross section. In the outlet plane, the fluid transported to the outer wall, was carried towards the inner wall by the secondary flow moving inwards along the wall.

Numerical Study of Turbulent Air Flow through the 180 Degree Oscillating Circular- Sectioned Bend Keywords:

Numerical Study of Turbulent Air Flow through the 180 Degree Oscillating Circular- Sectioned Bend authors

E Ameri

Department of Chemical Engineering, Islamic Azad University Shahreza Branch, Isfahan, Iran,

M Nasr Esfahani

Department of Chemical Engineering, Isfahan university of technology, Isfahan, Iran,

مراجع و منابع این Paper:

لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :
Barua, S.N., _ secondary flow in stationary curved pipes, " ...
_ Collins, W.M. and Dennis, S.C.R., _ study motion of ...
Dean, W.R., _ streamline motion of fluid in a curve ...
Ito, H., "Laminar flow in curved pipes, " Z. Angew ...
Mc Conalogoue, D.J. and Srivatava, R.S., "Motion of a fluid ...
Taylor, G.I., "The criterion for turbulence in curved pipes, " ...
Van Dyke, M., "Extended Stokes series: Laminar flow through a ...
Humphrey, J.A.C., Whitelaw, J.H. and Yee, G., ،"Turbulent flow in ...
Taylor, A.M.K.P., Whitelaw, J.H. and Yianneskism, M., "Curved ducts with ...
Chang, S.M. and Humphrey, J.A.C., ،"Turbulent flow in strongly curved ...
Enayat, M.M., Gibson, M.M., Taylor, A.M.K.P. and Yianneskis, M., "Laser-Doppler ...
Azzola, J., Humphrey, J.A.C., Iacovides, H. and Launder, B.E., "Developing ...
Sudo, K., Sumida, M. and Hibara, H., "Experimental investigation On ...
Sudo, K., Sumida, M. and Hibara, H., "Experimental investigation _ ...
Benhamou B., Galanis N. and Laneville _، "Transition to Turbulence ...
Nasr Esfahany, M. and Ameri, E. "Investigation of air flow ...
Mortell, M.P., Mulchrone, K.F. and Seymour, B.R., "The evolution of ...
نمایش کامل مراجع