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| Interior flow and unsteady performance of molten salt pump with splitter space guide vane |
| Yang Minguan, Shao Teng, Gao Bo, Li Zhong, Wang Da |
| School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract In order to suppress the secondary flow and axial vortex to improve the performance of the molten salt pump. A splitter space guide vane was raised.Using k-ε model and SIMPLE on simulation of the model molten salt pump with two forms of space guide vane.Then acquire the performance of two forms of molten salt pump and the interior velocity and pressure flow. The results show that at 0.8Q and 1.0Q flow,the distribution of the velocity in the splitter space guide vane is more even,the secondary flow and vortex near the suction side of guide vane reduced.As a result,the efficiency of the model pump is improved.At the 1.2Q flow,the splitter guide vane result in the low efficiency.But the distribution of velocity at the outlet of the space guide vane is even and the area of the low velocity decreased.The amplitude of the pressure fluctuation in the splitter space guide vane is determined by the blade frequency.The pressure fluctuation near the outlet is improved.At the design operating condition,the amplitude of the pressure fluctuation is lower 40% than the regular space guide vane.The pressure fluctuation near the flange is higher than hub.At the flange side of the vane,the pressure fluctuation on the pressure side is lower than suction side.The pressure fluctuation is similar on the hub of space guide vane.
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Received: 11 April 2014
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