Hunton Andrews Kurth LLP
Fluid transport pipe
The invention relates to a fluid transport pipe. A first unit channel in which a channel cross-sectional area continuously decreases toward a downstream side and a second unit channel in which a channel cross-sectional area continuously increases toward the downstream side are alternately combined. A ratio A (=L/{[Smax]1/2-[Smin]1/2}) is set within a range in which a drag reduction rate RD becomes a positive value. The fluid transport pipe includes: a first opening formed in a channel wall of the first unit channel; a second opening formed in a channel wall of the second unit channel; and a bypass channel that allows by-passing of a flow from the first unit channel to the second unit channel through the openings.
TOYOTA JIDOSHA KABUSHIKI KAISHA NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE & TECHNOLOGY
F F F F
F16L F15D F15D F16L
inventional inventional inventional inventional
Kaoru Naoki Hirokazu Tsuneo
Iwamoto Takeuchi Ito Tsutsui