カスタマーログイン ショッピングカート
ライブラリ登録: Guest
ホーム アーカイブ Thermal Letter 役員 今後の会合 国際伝熱会議の集会
International Heat Transfer Conference 3
1966, 7-12 August, Chicago, USA

HEAT TRANSFER IN A DUCT IN REGIONS OF SEPARATED FLOW

Get access DOI: 10.1615/IHTC3.1690
pages 267-275

要約

Measurements of heat-transfer coefficients in pipes were made in regions of separated flow using circumferential grooves, ribs and sudden enlargements. Heat fluxes were kept low with Re = 20 000 to 250 000 and air as the working fluid. In all the tests a development length, usually heated uniformly, preceded the irregularity causing separation. Other tests were performed with small isolated heated areas downstream of a rib. Wall shear stress in the reattachment zone downstream of an enlargement was studied visually using oil drops.
A peak in the heat-transfer coefficient occurs downstream of the irregularity and it is evident that this increase is determined by the length of separation and to a lesser extent by turbulence.
ホーム アーカイブ Thermal Letter 役員 今後の会合 国際伝熱会議の集会 English Русский 中文 Português Spain French German ヘルプ 問合せ先 Begell Houseへ戻る