Fig. 1. Rectangular cavity structure of classical model

Fig. 2. A typical macro-channel structure of optimized model

Fig. 3. Fluid movement trajectory diagram in the channel of the classical model

Fig. 4. Fluid movement trajectory diagram in the channel of the optimized model

Fig. 5. Upper cooling water flow rate diagram of the classical model

Fig. 6. Upper cooling water flow rate diagram of the optimized model

Fig. 7. Upper flow rate diagram of cooling water in the fluid channel

Fig. 8. Heat source temperature cloud diagram of the classical model

Fig. 9. Heat source temperature cloud diagram of the optimized model

Fig. 10. Maximum temperature variation diagram of the heat source-3 in the Z02 module