Numerical Simulation Of Nuclear Reactor Coolant Pump Based On Streamline Curvature Method

Nuclear power has been used as a kind of clear and efficient resource for several decades, and has become more and more mature. The boost of nuclear industry makes a great difference on improvement of the current state of the shortage of resource in China. Served as the only equipment rotating at a high speed in the first circuit of the reactor system, the Nuclear Reactor Coolant Cycling Pump makes great demands on its design and manufacture so that it can work safely and reliably under particular situations, such as high-temperature, high-pressure and strong-radiation environment.The traditional design method for the impeller usually comes up as theory of one-dimensional flow, such as the method of speed coefficients. But it is difficult to ensure the performance of the impeller designed by the one-dimensional flow theory. To solve this problem, optimization is always used together with speed coefficient method. Based on Wu’s theory of three-dimensional flow, the design could get a more satisfactory model. It is also easy to achieve calculation by programs, and the optimization is also of more advantages. The integration program of optimization with design is becoming a trend of the modern design ideas.Traditionally, the design of three-dimensional flow is based on the calculation, so the paper mainly conducts the numerical simulation. It mainly simulates the numerical simulation of S2stream surface of an AP1000reactor coolant pump impeller based on an existing one. In order to simplify the calculation, this article carries out streamline curvature method to make a program. To verify the computational capabilities of the program, first the airflow in the hollow cylinder and S2stream surface of the flow in a compressor are executed. The two cases prove that the self-program could be used to calculate the flow of compressible fluid. Next, to make sure that the self-program fit for the calculation of incompressible flow, water in the conical pipe is simulated. And then, S2stream surface of the flow in an impeller of pump is computed. The contrast of the results between self-program and CFX program proves that it is right to calculate the flow of incompressible fluid. The paper lays a foundation of the whole three-dimensional flow computation and model design optimization. At last, the paper undertakes the calculation of head under different flow rates. The result is in line with the that of CFX, it is a guide for the calculation in the future.