Derivations of Correlation and Liquid-Solid Contact Model of Transition Boiling Heat Transfer(<Special Issue>International Conferences on Power and Energy)

Search this Article

Author(s)

Abstract

The correlation of liquid-solid contact fraction in transition boiling was derived by focusing on the dimensionless wall temperature θ=(T_ω-T_<CHF>)/(T_<MHF>-T_<CHF>). The following correlation was obtained from experimental results for water, R-113 and LN_2: Γ=1.000-0.9120θ-0.1343θ^2, where q_<tb>=q_<CHF>Γ+q_<MHF>(1-Γ). In the present model, considering a pseudo-liquid solid contact right after the detachment of a bubble from a liquid-vapor interface, transient heat conduction was analyzed in it three-dimensionally. Liquid-solid contact time and area were determined by the present correlation of the fractions of liquid-solid contact: τ_<contact>=0.3Γ_t, A_<wet>=15×15×Γ_a, Γ_t=Γ_a=Γ^<0.5>={1.000-0.9120θ-0.1343θ^2}^<0.5>. The heat transfer during the wet period was estimated using q_<wet>=f(△T_<sat>^<0.8>). The prediction by the present model was in agreement with the present experimental data for water. Furthermore, a simulation of the rewetting was performed; the experimental results of cooling curves during the rewetting were well reproduced by the transient heat conduction model using the present correlation of transition boiling heat transfer and the present liquid-solid contact model.

Journal

  • JSME international journal. Ser. B, Fluids and thermal engineering   [List of Volumes]

    JSME international journal. Ser. B, Fluids and thermal engineering 49(2), 343-351, 2006-05-15  [Table of Contents]

    The Japan Society of Mechanical Engineers

References:  18

You must have a user ID to see the references.If you already have a user ID, please click "Login" to access the info.New users can click "Sign Up" to register for an user ID.

Codes

  • NII Article ID (NAID)
    110004717687
  • NII NACSIS-CAT ID (NCID)
    AA10888815
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    13408054
  • NDL Article ID
    7902952
  • NDL Source Classification
    ZN11(科学技術--機械工学・工業)
  • NDL Call No.
    Z53-Y271
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
Page Top