TY - GEN
T1 - Numerical simulation of flow and drag reduction characteristic of hydrophobic surface
AU - Pan, Guang
AU - Hu, Haibao
AU - Wu, Hao
AU - Liu, Zhanyi
PY - 2011
Y1 - 2011
N2 - For the drag reduction potential application of hydrophobic surface, VOF multiphase model and RNG k -ε turbulent model are adopted to simulate hydrophobic surface flow. The numerical simulation results show that: hydrophobic surface microstructures induce circular low-speed vortex which can produce certain cohesive force and they produce certain pressure force at the same time. But the microstructures have no significant effect on the flow field stability and static pressure distributions of near wall area. At the same velocity, as hydrophobic surface free shear area enlarges, pressure force increases and viscous force decreases gradually and the drag reduction of hydrophobic surface decreases gradually. For the hydrophobic surface with the same free shear area ratio, the drag reduction increases gradually with the increase of the velocity in the velocity range of 2.5 m/s and 10m/s.
AB - For the drag reduction potential application of hydrophobic surface, VOF multiphase model and RNG k -ε turbulent model are adopted to simulate hydrophobic surface flow. The numerical simulation results show that: hydrophobic surface microstructures induce circular low-speed vortex which can produce certain cohesive force and they produce certain pressure force at the same time. But the microstructures have no significant effect on the flow field stability and static pressure distributions of near wall area. At the same velocity, as hydrophobic surface free shear area enlarges, pressure force increases and viscous force decreases gradually and the drag reduction of hydrophobic surface decreases gradually. For the hydrophobic surface with the same free shear area ratio, the drag reduction increases gradually with the increase of the velocity in the velocity range of 2.5 m/s and 10m/s.
KW - Drag reduction characteristic
KW - Free shear area ratio
KW - Hydrophobic surface
KW - Numerical simulation
UR - https://www.scopus.com/pages/publications/80054825070
U2 - 10.1109/MACE.2011.5988222
DO - 10.1109/MACE.2011.5988222
M3 - 会议稿件
AN - SCOPUS:80054825070
SN - 9781424494392
T3 - 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings
SP - 5078
EP - 5081
BT - 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings
T2 - 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011
Y2 - 15 July 2011 through 17 July 2011
ER -