水电与新能源
水電與新能源
수전여신능원
HYDROPOWER AND NEW ENERGY
2015年
4期
1-4
,共4页
潮流水轮机%水力性能%增速管%数值模拟
潮流水輪機%水力性能%增速管%數值模擬
조류수륜궤%수력성능%증속관%수치모의
tidal current turbine%hydraulic performance%speed-up tube%numerical simulation
采用数值模拟方法对一种带增速管的水平轴潮流水轮机的流量特性和转速特性进行了研究，并分析了增速管长径比、面积比对该水轮机水力性能的影响。计算结果表明：该潮流水轮机能量转换效率较高，同时自启动性能好，但对潮流流速变化较敏感；增速管可显著提高水轮机的水力性能，特别是输出功率；对于一定结构形式的潮流水轮机，增速管具有最佳的长径比。
採用數值模擬方法對一種帶增速管的水平軸潮流水輪機的流量特性和轉速特性進行瞭研究，併分析瞭增速管長徑比、麵積比對該水輪機水力性能的影響。計算結果錶明：該潮流水輪機能量轉換效率較高，同時自啟動性能好，但對潮流流速變化較敏感；增速管可顯著提高水輪機的水力性能，特彆是輸齣功率；對于一定結構形式的潮流水輪機，增速管具有最佳的長徑比。
채용수치모의방법대일충대증속관적수평축조류수륜궤적류량특성화전속특성진행료연구，병분석료증속관장경비、면적비대해수륜궤수력성능적영향。계산결과표명：해조류수륜궤능량전환효솔교고，동시자계동성능호，단대조류류속변화교민감；증속관가현저제고수륜궤적수력성능，특별시수출공솔；대우일정결구형식적조류수륜궤，증속관구유최가적장경비。
Three-dimensional numerical simulations are carried out to investigate the hydraulic characteristics of the hori -zontal-axis tidal current turbine with speed-up tube .Effects of the dimension parameters of the speed-up tube , such as the length-diameter ratio and the area ratio , on the turbine's performance are also studied .Results show that the horizon-tal-axis tidal current turbine is of high energy utilization rate and great self-starting performance , while it is sensitive to the variation of the tidal current velocity .The speed-up tube can significantly improve the hydraulic performance , espe-cially the output power , of the tidal current turbine .The optimum length-diameter ratio of the speed-up tube is also de-termined .
