Fig. 1. Cross section schematic of reflux hood on FP-2 facility

Fig. 2. Measured current in exp90 experiment

Fig. 3. Simulated inner radius’s velocity in exp90 experiment

Fig. 4. Measured current in exp60 experiment

Fig. 5. Simulated inner radius’s velocity in exp60 experiment

Fig. 6. Simulated velocity in exp90 by the improved formula

Fig. 7. Simulated velocity in exp60 by the improved formula