Title :
Research on the Flow Separation Control in Hydrodynamic Coupling Based on Numerical Simulation
Author :
Chunbao, Liu ; Yaxu, Chu
Author_Institution :
State Key Lab. of Automotive Dynamic Simulation, Jilin Univ., Changchun, China
Abstract :
Flow separation should be controlled to improve performance for its adverseness in flow field. The separation flow in complex three-dimension viscous fluid with rotation effects in hydrodynamic coupling is analyzed. The method of drilling holes in turbine vane is employed to control flow separation in hydrodynamic coupling. The 3D flow field before and after drilling in turbine vanes is simulated and analyzed by CFD software. The characteristics of hydrodynamic coupling are predicted based on the numerical solution of the 3D flow field. The predicted characteristics are compared with the experimental results and the error range is less than 10%. It is proved that the numerical simulation method is accurate in flow field characteristics prediction. Compared with the holeless turbine vane, the performance of hydrodynamic coupling is improved remarkably after drilling holes in turbine vane. The method of drilling holes in the turbine vane to control the separation flow is economical and feasible.
Keywords :
blades; computational fluid dynamics; drilling; flow control; flow separation; flow simulation; hydrodynamics; numerical analysis; rotational flow; turbines; viscosity; 3D flow field; CFD software; complex three dimension viscous fluid; drilling hole; flow field characteristics prediction; flow separation control; hydrodynamic coupling; numerical simulation; rotation effect; turbine vane; Blades; Couplings; Drilling; Hydraulic turbines; Hydrodynamics; Mathematical model; Flow separation; Hydrodynamic coupling; Numerical simulation; component;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.724
