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Bifurcation and stability of forced convection in tightly coiled ducts: stability

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  • Wang, Liqiu
  • Pang, Ophelia
  • Cheng, Lin

Abstract

A numerical study is made on the stability of multiple steady flows and heat transfer in tightly coiled ducts by examining their responses to finite random disturbances. It is found that possible physically realizable fully developed flows evolve, as the Dean number increases, from a stable steady symmetric 2-cell flow at lower Dean numbers to a temporal periodic oscillation, a temporal intermittent oscillation, another temporal periodic oscillation, the co-existence of stable steady symmetric 2-cell flow and temporal oscillating flows (either periodic or aperiodic), and the co-existence of three stable steady 2-cell flows (either symmetric or asymmetric) and aperiodic oscillating flows.

Suggested Citation

  • Wang, Liqiu & Pang, Ophelia & Cheng, Lin, 2006. "Bifurcation and stability of forced convection in tightly coiled ducts: stability," Chaos, Solitons & Fractals, Elsevier, vol. 27(4), pages 991-1005.
    • Handle: RePEc:eee:chsofr:v:27:y:2006:i:4:p:991-1005
    DOI: 10.1016/j.chaos.2005.04.066
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    1. Wang, Liqiu & Pang, Ophelia & Cheng, Lin, 2005. "Bifurcation and stability of forced convection in tightly coiled ducts: multiplicity," Chaos, Solitons & Fractals, Elsevier, vol. 26(2), pages 337-352.
    2. Wang, Liqiu & Xu, Mingtian, 2005. "Property of period-doubling bifurcations," Chaos, Solitons & Fractals, Elsevier, vol. 24(2), pages 527-532.
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