ANALYSIS ON HYDRODYNAMIC PERFORMANCE OF FLOATING HORIZONTAL-AXIS IMPELLER UNDER DIFFERENT SURGE AMPLITUDES

Zhang Chenglin; Liu Andong; Wang Shiming; Xie Shuangyi

doi:10.19912/j.0254-0096.tynxb.2021-0741

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (12) : 482-488. DOI: 10.19912/j.0254-0096.tynxb.2021-0741

ANALYSIS ON HYDRODYNAMIC PERFORMANCE OF FLOATING HORIZONTAL-AXIS IMPELLER UNDER DIFFERENT SURGE AMPLITUDES

Zhang Chenglin^1,2, Liu Andong², Wang Shiming¹, Xie Shuangyi³

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Abstract

In order to study the effect of wave-current combined environment on the performance of floating tidal current turbine, the hydrodynamic analysis of horizontal axis energy-capacitated impeller under wave excitation in uniform inflow environment is carried out. Combined with ANSYS-Fluent fluid simulation software and its secondary development, the hydrodynamic analysis model of the forced motion of the floating energy-capturing impeller in uniform inflow is established by using the overlapping grid method. The hydrodynamic performance of the S-type bidirectional tidal current energy impeller in surge motion with different amplitudes is simulated, and the accuracy of the calculation results is verified by the actual flume test. The analysis results show that the surge excitation causes obvious instantaneous fluctuation of the flow field velocity around the impeller, and the fluctuation amplitude of the force load of the impeller will increase due to the enhancement of the surge excitation. The velocity change and streamline change of the impeller wake field increase with the increase of the surge amplitude, but the uniformity of the flow field decreases with the increase of the surge amplitude.

Key words

tidal current energy / hydrodynamic performance / computational fluid dynamics / impeller overlapping grid / forced surge motion

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Zhang Chenglin, Liu Andong, Wang Shiming, Xie Shuangyi. ANALYSIS ON HYDRODYNAMIC PERFORMANCE OF FLOATING HORIZONTAL-AXIS IMPELLER UNDER DIFFERENT SURGE AMPLITUDES[J]. Acta Energiae Solaris Sinica. 2022, 43(12): 482-488 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0741

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