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ICHMT DIGITAL LIBRARY ONLINE

ISSN 961-91393-0-5

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Year 2000

Volume 1 - Thermal Sciences 2000
Proceedings of the International Thermal Science Seminar Bled, Slovenia, June 11 – 14, 2000

604 pages

Volume price - $120.00

ROUTES LEADING TO CHAOS IN NATURAL CONVECTION BY PROGRESSIVELY VARYING THE PARAMETERS CHARACTERIZING THE TEMPERATURE VARIATION IN A REPETITIVE GEOMETRY

Samira Douamna
Physics Department, LMFE, Faculty of Sciences Semlalia, B. P. 2390, Marrakesh, Morocco

Mohamed Hasnaoui
Cadi Ayyad University, Faculty of Sciences Semlalia, Physics Department, UFR TMF, Laboratory of Fluid Mechanics and Energetics (LMFE), B.P. 2390, Marrakech, Morocco

Abdelkhalk Amahmid
Faculty of Sciences Semlalia, Physics Department, UFR TMF, BP 2390, Marrakesh, Morocco

ABSTRACT

Transient natural convection in a repetitive geometry, periodically heated from below with a temperature that varies sinusoidally with time, is studied numerically. Parameters of the problem are the Rayleigh number, the dimensionless amplitude and period of the variable input temperature. By considering air (Pr = 0. 72) as a working fluid and maintaining the geometrical parameters constant, different routes leading to chaos are identified by progressively varying the influencing parameters.