AM06-12-005 伝熱管における抵抗減少溶液の流れ(乱流現象の制御・流れの抵抗低減(1),一般講演)

概要

論文の詳細を見る
An experimental study of drag reduction of turbulent flows in grooved pipes and in corrugated pipes has been carried out for surfactant (TTAB) solution. Two types of grooved pipes and two types of corrugated pipes are used. When grooved pipes are used, remarkable drag reduction can be seen with surfactant solution. Friction factors for surfactant solution in grooved pipes are very close to that of the smooth pipe, which means drag reduction rate is higher than that of the smooth pipe and its maximum value amounts to 80%. On the other hand, friction factors for surfactant solution in corrugated pipes depend strongly on the temperature and its value increases and decreases with increasing Reynolds number. Drag reduction is not as remarkable as that for grooved pipe. This behavior is closely related to Shear-Induced-State.
日本流体力学会の論文
2006-09-05