In this paper, the extreme wave loads on an on-shore wave power device are investigated. First, boundary element method is applied to solve the three dimensional potential problem based on the small amplitude wave ass...In this paper, the extreme wave loads on an on-shore wave power device are investigated. First, boundary element method is applied to solve the three dimensional potential problem based on the small amplitude wave assumption. Then the motion of the Oscillating Water Column (OWC) inside the device and its laods on the device are calculated in time domain. Several protective techniques often applied are simulated by changing the constraint of the upper end of the chamber of the device. Numerical results are used to judge the effectiveness of these techniques. The investigation shows that damping can not effectively restrain the motion of OWC when the period of incident wave is long, which may cause dangerous loads on the structure. The shut chamber can effectively restrain the motion of OWC, but alternatively cause high pressure in the chamber. A Contracting opening with a Taper (CT) can exhaust a great amount of kinetic energy of OWC, and significantly decrease the loads. It is a promising protective technique.展开更多
Tangya Tribute Rice is a famous and special product in Shandong Province,and it was awarded the National Geographical Indication Certificate trademark in 2011.This paper elaborated the specific production area,unique ...Tangya Tribute Rice is a famous and special product in Shandong Province,and it was awarded the National Geographical Indication Certificate trademark in 2011.This paper elaborated the specific production area,unique production environment,rich cultural history and unique product quality of Tangya Tribute Rice.In addition,from the aspects of choice of origin,variety selection,production management,timely harvesting and processing,it summarized the unique production methods of Tangya Tribute Rice.Besides,it discussed its development prospects,in order to maintain the brand quality of Tangya Tribute Rice to the greatest extent,and further improve the brand awareness and market competitiveness of Tangya Tribute Rice in the domestic and international markets.展开更多
文摘In this paper, the extreme wave loads on an on-shore wave power device are investigated. First, boundary element method is applied to solve the three dimensional potential problem based on the small amplitude wave assumption. Then the motion of the Oscillating Water Column (OWC) inside the device and its laods on the device are calculated in time domain. Several protective techniques often applied are simulated by changing the constraint of the upper end of the chamber of the device. Numerical results are used to judge the effectiveness of these techniques. The investigation shows that damping can not effectively restrain the motion of OWC when the period of incident wave is long, which may cause dangerous loads on the structure. The shut chamber can effectively restrain the motion of OWC, but alternatively cause high pressure in the chamber. A Contracting opening with a Taper (CT) can exhaust a great amount of kinetic energy of OWC, and significantly decrease the loads. It is a promising protective technique.
基金Genetic Breeding Post Construction Project of Rice Innovation Team of Modern Agricultural Industrial Technology System of Shandong Province(SDAIT-17-01).
文摘Tangya Tribute Rice is a famous and special product in Shandong Province,and it was awarded the National Geographical Indication Certificate trademark in 2011.This paper elaborated the specific production area,unique production environment,rich cultural history and unique product quality of Tangya Tribute Rice.In addition,from the aspects of choice of origin,variety selection,production management,timely harvesting and processing,it summarized the unique production methods of Tangya Tribute Rice.Besides,it discussed its development prospects,in order to maintain the brand quality of Tangya Tribute Rice to the greatest extent,and further improve the brand awareness and market competitiveness of Tangya Tribute Rice in the domestic and international markets.
