Numerical Analysis of Fluid Flow and Heat Transfer in Wavy and Hybrid-Slit-Wavy (HSW) Fin-and-Tube Heat Exchangers
This numerical study pertains to characterizing flow and heat transfer interactions for an interrupted fin design with wavy profile in a compact tube-and-fin heat exchanger. Sinusoidal wavy fin is ...
For better control of the hydro turbine generating units,it is desirable to identify the model of the subject of the hydro turbine governing system before optimizing its control parameters.The nonlinear model of the hydro turbine governing system is established first.Its parameters are identified with the Recursive Least Square method(RLS).The simulation experiments demonstrate that the difference between the identified model and the real one is rather small.The method is simple,effective and easy to implement.The optimization of the control parameters can be further made based on the identified model to improve the dynamic performance.Therefore it is valuable and practical.