Numerical Research on Self-Sustained Oscillation and Chaos of Natural Convection in Horizontal Fluids Layer

Nai Yan Zhan; Bo Li; Y. Xiao

doi:10.4028/www.scientific.net/AMM.448-453.3234

Paper Titles

A Study of the Enhancement in Near-Field Radiative Heat Transfer by Surface Polaritons
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Study of Cold-State Aerodynamic Field Test on the Outlet of 2150t/h Supercritical Once-Through Boiler
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Influence Study of the Influence Domain to Numerical Simulation Results with Meshless Method
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The Study on Heat Transfer Model and Algorithm of Multi-Sectional Regenerative Air Heater in Power Plant Boiler Based on Analytical Method
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Numerical Research on Self-Sustained Oscillation and Chaos of Natural Convection in Horizontal Fluids Layer
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Research and Application of Intelligent Control Technology for Main Steam Temperature Regulation in Ultra-Supercritical Thermal Power Plants
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Study on the Influence of the Operation Parameters to the Ground Source Heat Pump Energy Efficiency Ratio
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Research of Calculation Parameters Selection of Line-by-Line Model and Narrow Band K-Distribution Model
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Experimental Studies on the Seawater Desalination System Based on Ocean Thermal Energy Conversion
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 448-453Numerical Research on Self-Sustained Oscillation...

Numerical Research on Self-Sustained Oscillation and Chaos of Natural Convection in Horizontal Fluids Layer

Abstract:

Numerical simulation was conducted to study self-sustained oscillation and chaos of natural convection in horizontal fluids layer heated from below. The numerical simulation was conducted using SIMPLE algorithm with a QUICK scheme. Discrete time series was analyzed to study stability problem. Correlation dimension was calculated, their frequency characteristics were analyzed and chaos attractor was extracted. The results showed that oscillation appeared when Ra was over 2×10⁴ and chaos appeared when Ra was over 5×10⁶. When parameter was varied, chaos appeared. Strange attractor was used to describe chaos system. Fractal dimension of strange attractor was 1.19. Saturated embedding dimension of phase space reconstruction was 5. The time delay was selected for 5.

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Periodical:

Applied Mechanics and Materials (Volumes 448-453)

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3234-3239

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.448-453.3234

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Online since:

October 2013

Authors:

Nai Yan Zhan, Bo Li, Y. Xiao

Keywords:

Analyzing Feasibility, Couple, Measure, Saving Potential

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