Natural Convection form an Array of Rectangular Protrusions in an Enclosure Filled with Dielectric Fluid: Effects of Boundary Conditions, Fluid Prandtl Number, and Selective Powering

Abstract

An experimental investigation has been conducted to further examine Natural Convection Immersion Cooling of a three by three array of heated protrusions in a rectangular chamber filled with dielectric fluid. Each rectangular protrusion geometrically modelled a 20 pin dual inline package. Input power to each component varied from 0.1 to 3.0 W.. The purpose of this study was to examine the effects of the following parameters for the range of power levels selected: 1) Top and bottom boundary temperatures; 2) Selective powering of components; 3) Changes in the fluid Prandtl number. The data were obtained as component surface temperatures. These were subsequently presented in terms of appropriate non-dimensional parameters. As part of the overall investigation, flow visualization results are also presented for selected conditions. Keywords: Theses; Direct immersion; Natural convection cooling; Dielectric liquid protrusions; Enclosure; Simulated circuit board; Convective heat transfer.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1989
Accession Number
ADA219819

Entities

People

  • Mark E. Powell

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acquisition
  • Conductivity
  • Convection
  • Data Acquisition
  • Electronic Components
  • Electronic Equipment
  • Heat Exchangers
  • Heat Transfer
  • Heat Transfer Coefficients
  • Liquid Cooling
  • Measurement
  • Surface Properties
  • Surface Temperature
  • Thermal Conductivity
  • Thermal Diffusivity
  • Thermophysical Properties
  • Three Dimensional

Fields of Study

  • Engineering

Readers

  • Fluid Dynamics.
  • Military Mobilization and Reserve Forces Studies.
  • Thermal Physics or Thermal Science.