Experimental Study of Natural Convection in Thin Horizontal Liquid Layers.

Abstract

Heat transfer through a very thin horizontal liquid layer bounded on top by a cooled glass plate and on bottom by a heated copper plate was measured. Results were correlated in terms of Nusselt number as a function of Rayleigh number. Three different liquids were used under conditions to give a range of Rayleigh number from 350 to 4100 and Prandtl number from 34 to 477. Up to a critical condition heat is transferred by conduction alone. Convection appears when Ra = 1600 + or - 100. A correlation for critical Rayleigh number as a function of Prandtl number was obtained. (Auuthor)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1977
Accession Number
ADA048409

Entities

People

  • Mahmut Yurteri

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chambers
  • Convection
  • Electrical Insulation
  • Engineering
  • Engineers
  • Ethylene Glycol
  • Flow Rate
  • Heat Loss
  • Heat Transfer
  • Instrumentation
  • Measurement
  • Measuring Instruments
  • Mechanical Engineering
  • Prandtl Number
  • Temperature Gradients
  • Thermal Conductivity
  • Thermophysical Properties

Readers

  • Combustion and Flow Dynamics.
  • Fluid Dynamics.