대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)
- 제22권7호
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- Pages.956-965
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- 1998
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- 1226-4881(pISSN)
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- 2288-5324(eISSN)
DOI QR Code
원형단면의 곡관에서의 난류유동 측정
Experimental study of turbulent flow in a U-bend of circular cross-section
- 이건휘 (원광대학교 기계설계공학과)
- 발행 : 1998.07.01
초록
Hot-wire measurement of the longitudinal and radial velocity components and Reynolds stresses are reported for developing turbulent flow in a strongly curved 180 deg. pipe and its tangents. Slanted wire is rotated to 6 directions and the voltage outputs of them are combined to obtain the mean velocities and Reynolds stresses. Significant double maxima in the longitudinal velocity component appear in the bend. V-profiles reveal the development of a strong secondary flow. This secondary flow is induced by the transverse pressure gradient set up between the outer(r
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