Fig. 1. Grid division schematic diagram of fluid computing domain

Fig. 2. Grid independence test

Fig. 3. Structure diagram of different radius ratio oval discharge ports

Fig. 4. Flow streamline of thermal jet from circle discharge port

Fig. 5. Local velocity vector diagram of thermal jet from circle discharge port

Fig. 6. Surface temperature contour of thermal jet from circle discharge port

Fig. 7. Flow streamline of thermal jet from radius ratio 4∶25, 25∶4 oval discharge ports

Fig. 8. Experimental diagram

Fig. 9. Experimental pool

Fig. 10. Controller of trailer platform

Fig. 11. Model of underwater vehicle

Fig. 12. Trajectory of thermal jet from circle discharge port

Fig. 13. Surface temperature contour of thermal jet from circle discharge port

Fig. 14. Surface maximum temperature difference of thermal jet from different radius ratio oval discharge ports

Fig. 15. Structure of discharge multiport

Fig. 16. Flow streamline of thermal jet from discharge multiport

Fig. 17. Floating height of thermal jet from discharge multiport