This paper presents a new concept for the cruise ship, which has been developed from a thesis work discussed at the master＇s degree in Yacht and Cruise Vessel Design, at La Spezia, Italy. A typical cruise ship docked...This paper presents a new concept for the cruise ship, which has been developed from a thesis work discussed at the master＇s degree in Yacht and Cruise Vessel Design, at La Spezia, Italy. A typical cruise ship docked at port does not interact with the city, but remains a guest in transit. Why not then take on the challenge of designing a functional entity that transports events, culture and entertainment？ The ship would then become an extension of the city, offering a different experience each time to suit the tastes of all the family. Ira ship can be ＂inhabited＂, a city can be ＂inhabited on the water＂. The ship does not have a particularly residential facade but it has a multifunctional body.展开更多
The inner flow field of a biogas plant can be optimized by agitating the feedstock to be evenly distributed for a rising biogas production rate. A hydraulic agitator can be installed in the digester with outlets far a...The inner flow field of a biogas plant can be optimized by agitating the feedstock to be evenly distributed for a rising biogas production rate. A hydraulic agitator can be installed in the digester with outlets far above the bottom. Hydraulic mixing is essential in a solid-liquid two-phase flow process, in which large solid particles can be found at the initial stage and turn to being high-concentration viscous liquid （non-Newtonian fluid）. A 0.75 m3 digester was taken as a case study with CFD （computational fluid dynamics） software. The basic pattern was simulated by using water as the medium and the pattern of pseudo plastic fluid state was simulated by the Euler-Euler Model, then the effect of optimized design with bottom inflow and high dispersed outlets could be verified. Viewed from the mixing effects, the velocity of 0.6 m/s is better than l m/s for water medium, while 1 m/s better than 0.6 m/s for pseudo plastic fluid medium.展开更多
Internal SET has become a great concern in normal radiation-hardened flip-flops with increases in frequency.We investigate the internal SET problem in the traditional hardened flip-flops in this article.We also propos...Internal SET has become a great concern in normal radiation-hardened flip-flops with increases in frequency.We investigate the internal SET problem in the traditional hardened flip-flops in this article.We also propose a novel structure to eliminate the internal SET problem.Three-dimensional technology computer-aided design(TCAD)was adopted to verify the hardened performance of this proposed novel structure.Besides,the power and setup time were compared with the traditional hardened flip-flops.展开更多
文摘This paper presents a new concept for the cruise ship, which has been developed from a thesis work discussed at the master＇s degree in Yacht and Cruise Vessel Design, at La Spezia, Italy. A typical cruise ship docked at port does not interact with the city, but remains a guest in transit. Why not then take on the challenge of designing a functional entity that transports events, culture and entertainment？ The ship would then become an extension of the city, offering a different experience each time to suit the tastes of all the family. Ira ship can be ＂inhabited＂, a city can be ＂inhabited on the water＂. The ship does not have a particularly residential facade but it has a multifunctional body.
文摘The inner flow field of a biogas plant can be optimized by agitating the feedstock to be evenly distributed for a rising biogas production rate. A hydraulic agitator can be installed in the digester with outlets far above the bottom. Hydraulic mixing is essential in a solid-liquid two-phase flow process, in which large solid particles can be found at the initial stage and turn to being high-concentration viscous liquid （non-Newtonian fluid）. A 0.75 m3 digester was taken as a case study with CFD （computational fluid dynamics） software. The basic pattern was simulated by using water as the medium and the pattern of pseudo plastic fluid state was simulated by the Euler-Euler Model, then the effect of optimized design with bottom inflow and high dispersed outlets could be verified. Viewed from the mixing effects, the velocity of 0.6 m/s is better than l m/s for water medium, while 1 m/s better than 0.6 m/s for pseudo plastic fluid medium.
基金supported by the National Natural Science Foundation of China(Grant No.61376109)
文摘Internal SET has become a great concern in normal radiation-hardened flip-flops with increases in frequency.We investigate the internal SET problem in the traditional hardened flip-flops in this article.We also propose a novel structure to eliminate the internal SET problem.Three-dimensional technology computer-aided design(TCAD)was adopted to verify the hardened performance of this proposed novel structure.Besides,the power and setup time were compared with the traditional hardened flip-flops.
