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EFFECTS OF A SINGLE POROUS-TYPE ROUGHNESS ELEMENT ON HEAT TRANSFER.

[In Japanese. / En japonais.]

Author(s) : ICHIMIYA K., et al.

Type of article: Article

Summary

LOCAL HEAT TRANSFER AND DRAG COEFFICIENT DEPEND ON POROUS DIAMETER AND POROSITY. THE LOCAL HEAT TRANSFER COEFFICIENT TAKES A PEAK, P1, UNDER THE POROUS ELEMENT IN LAMINAR FLOW. IN TURBULENT FLOW, IT TAKES 2 PEAKS, P1 AND P2, UNDER AND AFTER THE ELEMENT, RESPECTIVELY. THE POSITION OF P2 VARIES WITH THE HEIGHT OF THE ELEMENT AND THE REYNOLDS NUMBER. THE DRAG COEFFICIENT OF THE POROUS ELEMENT IS LOWER THAN THAT OF THE SOLID ELEMENT. ACCORDING TO THERMAL PERFORMANCE, THIS KIND OF ELEMENT SHOULD BE USED IN LAMINARFLOW.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1991-1492
  • Languages: Japanese
  • Source: Trans. JAR - vol. 6 - n. 2
  • Publication date: 1989
  • Document available for consultation in the library of the IIR headquarters only.

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