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Enhancing pressure pulsation suppression of wide-load operation for a low-head Francis turbine with tubercles installed on draft tube
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DOI：10.1016/j.energy.2026.142141.png)
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Abstract
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• Three tubercle configurations are compared against a prototype draft tube. • Tubercles suppress the formation and development of the vortex within draft tube. • Tubercles with 10°is most effective in suppressing pressure pulsations. • The amplitude induced by rotor-stator interaction is consistently suppressed by up to 62.24%. • Within the draft tube 0.3D, the amplitude of 0.22 fn decreases by 88.81%.
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9.4
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4.2W
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20.2W
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