Using the measured data to analyze the change rule of water increase and decrease in the coastal waters of Tanggu station.The water increase caused by the temperate cyclone in winter accounts for a higher frequency in...Using the measured data to analyze the change rule of water increase and decrease in the coastal waters of Tanggu station.The water increase caused by the temperate cyclone in winter accounts for a higher frequency in the whole year,and the water increase caused by the tropical cyclone in summer is larger,which brings serious storm surge disasters.This paper determines the maximum tropical cyclone parameters through statistics of historical typhoon processes,establishes a numerical model of storm water increase and decrease,and calculates the maximum possible water increase caused by typhoons in this sea area,and the water increase value is 3.6 m.A gale sensitivity experiment was constructed,and the maximum possible increase or decrease of water in the gale was calculated.展开更多
It is well known that the drag-reducing effect is obtained in a surfactant solution flow in a straight pipe. We investigate about a viscoelastic fluid flow such as a surfactant solution flow in a square-section 90...It is well known that the drag-reducing effect is obtained in a surfactant solution flow in a straight pipe. We investigate about a viscoelastic fluid flow such as a surfactant solution flow in a square-section 90° bend. In the experimental study, drag-reducing effect and velocity field in a surfactant solution flow are investigated by measurements of wall pressure loss and LDV measurements. For the numerical method, LES with FENE-P model is used in the viscoelastic fluid flow in the bend. The flow characteristics of viscoelastic fluid are discussed compared with that of a Newtonian fluid.展开更多
文摘Using the measured data to analyze the change rule of water increase and decrease in the coastal waters of Tanggu station.The water increase caused by the temperate cyclone in winter accounts for a higher frequency in the whole year,and the water increase caused by the tropical cyclone in summer is larger,which brings serious storm surge disasters.This paper determines the maximum tropical cyclone parameters through statistics of historical typhoon processes,establishes a numerical model of storm water increase and decrease,and calculates the maximum possible water increase caused by typhoons in this sea area,and the water increase value is 3.6 m.A gale sensitivity experiment was constructed,and the maximum possible increase or decrease of water in the gale was calculated.
文摘It is well known that the drag-reducing effect is obtained in a surfactant solution flow in a straight pipe. We investigate about a viscoelastic fluid flow such as a surfactant solution flow in a square-section 90° bend. In the experimental study, drag-reducing effect and velocity field in a surfactant solution flow are investigated by measurements of wall pressure loss and LDV measurements. For the numerical method, LES with FENE-P model is used in the viscoelastic fluid flow in the bend. The flow characteristics of viscoelastic fluid are discussed compared with that of a Newtonian fluid.
