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The Spalart-Allmaras turbulence model and the standard turbulence model were used to simulate the 3-D flow in low specific speed Francis runner with splitter blades and the simulating capability of these two models were compared. The calculation process was based on continuity equation and Navies-Stokes equation. The governing equations were discretized by finite-volume method and SIMPLIC method was...
At present, Web applications and HTTP requests on the Internet are so explosively increasing that a large number of hot Web sites frequently confront with problems of server overloading. And how to provide various web services with high-level quality and satisfactory performance for Web clients has become one of the most urgent points we concern. In order to smoothly solve these problems, we proposed...
With the applications of predictive control in the process control, the research of algorithm and theory about the predictive control has also achieved great development. Dynamic Matrix Control (DMC) algorithm is a prediction-control algorithm based on the objectpsilas step response. It is suitable for the control systems which are complicate and difficult to build accurate mathematical models. This...
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