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슬러리의 최소 수송속도에 관한 관 직경의 영향

Effect of Pipe Diameter on the Minimum Transport Velocity of Settling Slurries

HWAHAK KONGHAK, February 1986, 24(1), 39-45(7), NONE
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Abstract

수평관을 통한 균일한 입자의 슬러리 최소수송속도에 미치는 관직경의 영향이 입자의 농도에 따라 어떻게 변하는 가를 연구하였다. 침강과 수송조건에서 유체에 대한 입자의 상대운동의 유사성에 기초를 둔 최소수송속도의 결정을 위한 새로운 상관 관계식은 실험적으로 결정된 종말속도와 상관관계가 있었다. 관직경 의존성은 무한희석 슬러리의 평균난류강도에 포함될 수 있었으며 실험자료의 회귀분석에 의하여 관직경을 기준으로 한 레이놀즈수의 함수로 표시될 수 있었다. 계산 결과는 총괄 rms 편차 5 % 범위내에서 실험치와 잘 일치하였다.
The effect of pipe diameter on the minimum transport velocity of settling slurries through horizontal pipes was experimentally investigated for uniform size particles. A new correlation for the determination of the minimum transport velocity based on the similarity between the relative velocity of particle in settling and transport condition was obtained using the experimentally determined terminal falling velocity. The effect of pipe diameter was included in the average turbulent intensity at infinite dilution, which was correlated as a function of pipe Reynolds number by the regression analysis of experimental data. The calculated results agreed with experimental data within 5 % of root mean square deviation

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