The prediction accuracies of partially-averaged Navier-Stokes model and improved shear stress transport k-ω turbulence model for simulating the unsteady cavitating flow around the hydrofoil were discussed in this paper. Numerical results show that the two turbulence models can effectively reproduce the cavitation evolution process. The numerical prediction for the cycle time of cavitation incep...

Software maintenance is extremely important activity in software development life cycle. It involves a lot of human efforts, cost and time. Software maintenance may be further subdivided into different activities such as fault prediction, fault detection, fault prevention, fault correction etc. This topic has gained substantial attention due to sophisticated and complex applications, commercial...

The gap between the cycle time of processor and the access time to memory go on being eminent. The processor performance increases about 60% by year because of reduction of cycle time and the rise in the number of instruction processed by cycle. Nevertheless, DRAM memories access time only reach an improvement about 10% by year although capacity is duplicate every one and a half year, according...