Cavity-to-cavity interaction in nucleate boiling: The effect of heat conduction within the heater Metadata

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Title

  • Main Title Cavity-to-cavity interaction in nucleate boiling: The effect of heat conduction within the heater

Creator

  • Author: Pasamehmetoglu, K.O.
    Creator Type: Personal
  • Author: Nelson, R.A.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: DOE; USDOE, Washington, DC (United States)

Publisher

  • Name: Los Alamos National Laboratory
    Place of Publication: New Mexico

Date

  • Creation: 1991-01-01

Language

  • English

Description

  • Content Description: This paper presents a numerical study aimed at analyzing bubble behavior as a function of site location. The effects of site distribution on the nucleate boiling curve are examined. Simple local-instantaneous models that mimic the bubble behavior on the boiling surface were implemented into a three-dimensional finite control volume conduction code. For a given site density, sample cases were run for uniform and nonuniform site distribution. The authors results indicate considerable deviation from linearized theories that always assume a uniform distribution. It is shown that bubble emission frequency is a strong function of site location. Consequently, the bubble flux density is shown to deviate from a simple periodic behavior with increasing nonuniformity in site distribution. This study further indicates that a uniform site distribution results in minimum area- and time-averaged surface superheat and minimum temperature variations on the boiling surface. As the distribution becomes less uniform, average surface temperature and surface temperature variations along the boiling surface increase. 19 refs., 14 figs., 2 tabs.
  • Physical Description: 37 p.

Subject

  • Keyword: Heat Flux
  • Keyword: Time Dependence
  • Keyword: Heat Transfer
  • Keyword: Hydraulics
  • Keyword: Mathematical Models
  • Keyword: Efficiency
  • Keyword: Bubbles
  • Keyword: Computer Codes
  • Keyword: Boiling
  • Keyword: Fluid Mechanics
  • Keyword: Transients
  • Keyword: Flow Models
  • Keyword: Mass Transfer
  • Keyword: Mechanics
  • Keyword: Two-Phase Flow
  • STI Subject Categories: 42 Engineering
  • Keyword: Energy Transfer
  • Keyword: H Codes
  • Keyword: Reactor Cores
  • Keyword: Convection
  • Keyword: Fluid Flow
  • Keyword: Nucleate Boiling
  • Keyword: Natural Convection
  • Keyword: Reactor Components 420400* -- Engineering-- Heat Transfer & Fluid Flow
  • Keyword: Three-Dimensional Calculations
  • Keyword: Phase Transformations

Source

  • Conference: ASME/AIChE/ANS national heat transfer conference, Minneapolis, MN (USA), 26-31 Jul 1991

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE91007396
  • Report No.: LA-UR-91-165
  • Report No.: CONF-910739--7
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5773256
  • Archival Resource Key: ark:/67531/metadc1103792

Note

  • Display Note: OSTI; NTIS; GPO Dep.
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