• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

FLUID FLOW AND HEAT TRANSFER OF NATURAL CONVECTION AROUND MULTIPLE HEAT SOURCES PLACED IN THE SAME HORIZONTAL PLANE

Research Project

Project/Area Number 07650252
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionTOYOHASHI UNIVERSITY OF TECHNOLOGY

Principal Investigator

KITAMURA Kenzo  TOYOHASHI UNIVERSITY OF TECHNOLOGY,DEPARTMENT OF MECHANICAL ENGINEERING,ASSOCIATE PROFESSOR, 工学部, 助教授 (20126931)

Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1996: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1995: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsNatural Convection / Heat Transfer / Plume / Visualization / Horizontal Plate / Multiple Heat Sources / Interaction
Research Abstract

Interactions of natural convection plumes issued from multiple heat sources placed in the same horizontal plane have been investigated experimentaly in the present study. The special concerns were focused on the fluid flow and the heat transfer around the horizontal rows of vertical plates, horizontal cylinders and upward-facing horizontal plates, which were placed at the constant intervals and were heated with the constant heat fluxes. The test fluid is water at room temperature. The flow field around these heat sources were visualized with dye. The results demonstrate that the plumes departed from the heat sources interact with each other and gather to the symmetrical plane between the heat sources. These interactions occur even when the intervals between the heat sources are ten times larger than the dimensions of the heat sources. The influences of the plume interactions on the heat transfer characteristics of the heat sources were also investigated. The results for the vertical plates show no substantial change in the local heat transfer coefficients, while the local coefficients of the horizontal cylinders and of the horizontal plates are changed by the plume interaction. It is found from the visualization study that the separation points over the above two heat sources move toward the center of the heat sources when the interactions occur and this could cause the variations in the local coefficients. On the basis of the above discussions, the heat transfer characteristics of the upward-facing horizontal plates were investigated. It was revealed that the local heat transfer coefficients are affected seriously when the plates are placed at small intervals. However, the effect of the plume interaction on the heat transfer coefficients becomes smaller with increasing the intervals, and the over-all coefficients of the plates become the same as those of the single plate when the plate intervals exceed 50mm.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 北村健三: "水平加熱平板上に生じる自然対流の干渉と熱伝達" 第32回日本伝熱シンポジウム講演論文集. 3. 443-444 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] K.Kitamura and A.Yoshioka: "Interactions of Natural Convections Over Horizontal, Heated Plates and Their Influences on Heat Transfer" Proc.of 32nd National Heat Transfer Conference. Vol.3. 443-444 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 北村健三: "水平加熱平板上に生じる自然対流の干渉と熱伝達" 第32回日本伝熱シンポジウム講演論文集. 3. 443-444 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 北村健三: "水平加熱平板に生じる自然対流の干渉と熱伝達" 第32回日本伝熱シンポジウム講演論文集. 3. 443-444 (1995)

    • Related Report
      1995 Annual Research Report

URL: 

Published: 1995-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi