TY - JOUR
TI - Study on finite deformation finite element analysis algorithm of turbine blade based on CPU+GPU heterogeneous parallel computation
AU - Liu Tian-Yuan
AU - Dang Hao
AU - Xie Yong-Hui
JN - Thermal Science
PY - 2016
VL - 20
IS - 13
SP - 823
EP - 831
PT - Article
AB - Blade is one of the core components of turbine machinery. The reliability of  blade is directly related to the normal operation of plant unit. However,  with the increase of blade length and flow rate, non-linear effects such as  finite deformation must be considered in strength computation to guarantee  enough accuracy. Parallel computation is adopted to improve the efficiency of  classical nonlinear finite element method and shorten the blade design  period. So it is of extraordinary importance for engineering practice. In  this paper, the dynamic partial differential equations and the finite element  method forms for turbine blades under centrifugal load and flow load are  given firstly. Then, according to the characteristics of turbine blade model,  the classical method is optimized based on central processing unit + graphics  processing unit heterogeneous parallel computation. Finally, the numerical  experiment validations are performed. The computation speed of the algorithm  proposed in this paper is compared with the speed of ANSYS. For the rectangle  plate model with mesh number of 10 k to 4000 k, a maximum speed-up of 4.31  can be obtained. For the real blade-rim model with mesh number of 500 k, the  speed-up of 4.54 times can be obtained.