The invention belongs to the technical field of
simulation optimization, and particularly relates to a
centrifugal pump impeller multi-
physics field
coupling simulation optimization method which comprises the following steps: constructing a geometric model of a
centrifugal pump by adopting three-dimensional drawing
software according to an actual structure of the
centrifugal pump; finite
element modeling is conducted, and a finite
element analysis model of the centrifugal pump is obtained; hexahedral grids are divided for the
impeller, a shape variable space of the
impeller is built, and the impeller deformation serves as a design variable; solving the finite
element analysis model after grid division through a
solver; an experimental design sample is generated by adopting a Latin
hypercube sampling method, a global response surface model is constructed through quadratic
polynomial regression fitting, an optimal impeller deformation amount is iteratively solved by adopting a global response surface optimization
algorithm, a finite
element analysis model is adjusted, and an optimization model is formed. According to the method, fluid-
solid coupling simulation, a global response surface method and an automatic
iteration process are fused, and the efficiency of the centrifugal pump impeller is maximized and optimized on the basis of accurately matching actual working conditions.