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Subject

Oscillatory natural convection in a horizontal annulus
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수평 환형 공간에서 진동하는 자연대류

논문 기본 정보

Type
Proceeding
Author
Joo-Sik Yoo (안동대학교)
Journal
The Korean Society of Mechanical Engineers 대한기계학회 춘추학술대회 대한기계학회 2005년도 추계학술대회 논문집
Published
2005.10
Pages
75 - 82 (8page)

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Result
Oscillatory natural convection in a horizontal annulus
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Abstract· Keywords

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This study investigates transition to chaos in a two-dimensional natural convection of a low-Prandtl number fluid (Pr=0.02) in a wide-gap horizontal annulus with constant heat flux inner wall. When Pr=0.02, dual steady-state flows are not found. After the first Hopf bifurcation from a steady to a time-periodic flow, five successive period-doubling bifurcations are recorded before chaos. The power spectrum shows the period-2⁴ and 2? flows clearly, and a window of period 3×2³ flow is found in the chaotic regime. The approximate value of the Feigenbaum number for the last three period-doubling bifurcations is 4.76. The transition route to chaos of the present simulations is consistent with the period-doubling route of Feigenbaum.

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Abstract
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2. 해석
3. 결과 및 논의
4. 결론
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UCI(KEPA) : I410-ECN-0101-2010-550-003149277