Aim: In order to accumulate knowledge of compound temporal lobe epilepsy, the operation experience with 40 cases of compound temporal lobe intractable epilepsy was summed up.

Numerical computation of inner flow passing through low specific speed compound impeller of centrifugal;

After an introduction to the operating principle and characteristics of the rotating jet pump, the design theory of the pump is emphatically expounded, and the method for calculating the structural parameters of its compound impeller with S-shaped blades is discussed.

Especially the flow of compound impeller in the centrifugal pump at low specific speed is more complex and has more problems need urgently to resolve.

Numerical analysis of flow features of a high-speed centrifugal pump with a complex impeller with multi-phase position;

The design principle of complex impeller of lowspecificspeed,lowtemperature and highspeed centrifugal pumps is derived according to relative velocity distribution in impeller channel.

To analyze the performance of high-speed centrifugal pumps with ultra-low specific-speed,numerical simulation of inner flow in centrifugal pump with ordinary impeller and complex impeller was conducted.

The impact caused by bending direction to forming parts design as well as the structural design of bending and splitting compound working procedure are stated in details.