Dazhuan Wu

We don’t have enough information about this author to calculate their statistics. If you think this is an error let us know.
Learn More
In this paper, a control strategy to balance the reliability against efficiency is introduced to overcome the common off-design operation problem in pump-valve systems. The pump-valve system is a nonlinear multi-input-multi-output (MIMO) system with time delays which cannot be accurately measured but can be approximately modeled using Bernoulli Principle. A(More)
The security and stability of the pump system have received extensive attention in hydraulic engineering, especially in nuclear system. Transient operations, such as the rapid closure of a valve, a sudden switch over and start procedure of pumps and pump failure will cause sudden flow variation in the pipe system. This phenomenon, known as water hammer,(More)
The current paper studies the influence of annular seal flow on the transient response of centrifugal pump rotors during the start-up period. A single rotor system and three states of annular seal flow were modeled. These models were solved using numerical integration and finite difference methods. A fluid-structure interaction method was developed. In each(More)
  • 1