Natural Convection from a Horizontal Heater in Response to Steady and Pulsatile Input Powers

Abstract

Natural convection heat transfer from a flush mounted heater on a larger horizontal substrate in water has been investigated for both steady and periodic input powers. For steady power conditions, the heat flux was varied from 222 to 6880 W/m 2. Heater surface temperatures were measured at several locations in order to develop a non-dimensional heat transfer correlation. Three types of periodic input powers were tested: a triangular wave, an approximate square wave, and a sinusoidal wave. Mean, amplitude, and frequency were varied for each wave. Temperature measurements at selected heater locations were compared with steady state conditions to determine heat transfer enhancement.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1992
Accession Number
ADA257101

Entities

People

  • Christopher N. Hickey

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acquisition
  • Boundary Layer
  • Computers
  • Data Acquisition
  • Electronic Components
  • Electronic Equipment
  • Engineering
  • Flow
  • Frequency
  • Heat Flux
  • Heat Transfer
  • Mass Transfer
  • Measurement
  • Power Supplies
  • Square Waves
  • Steady State
  • Waveforms

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Thermal Physics or Thermal Science.