Calculation of Flow in Centrifugal Impeller Using Fintie Element Method
Chen Dejiang  Wang Shangjin
(Shantou University) (Xi'an Jiaotong University)

Abstract: The objective of this paper is to calculate the invisible, subsonic, compressible and steady
flow in a centrifugal impeller by using the finite element method and offer some references for the
research of this subject.Taking the stream function as the solution varable, this paper deduces the
partial differential equations obeyed by stream function on an arbitrary surface, est ablishes corres-
ponding finite element equations by using the Galerkin Method.One example is used to verify the
method and the program of this paper. The flow on the surface of revolution in a centrifugal impeller
is calculated. Numerical results reveal correctly the flow in a centrifugal impeller and offer some refe-
rences for the engineering design.
Keywords: finite element, centrifugal impeller, numerical calculation.