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为研究齿型流道结构参数对灌水器水力性能的影响及流道水流流动机理,选取流道结构尺寸参数齿宽a(A)、齿底距b(B)、齿高h(C)为试验因素及流态指数为试验指标,选用L9(34)正交表安排正交试验方案,利用CFD数值模拟软件FLUENT建立各方案模型并进行数值求解,采用极差分析、方差分析及线性回归法分析数值模拟试验结果,并研究了流道内部流场,以解释其消能机理。结果表明,齿形迷宫流道结构参数最优组合为A3B1C3,影响主次顺序为B、C、A;建立结构参数和流态指数间的线性回归模型;流道内部水流依靠漩涡产生局部水头损失达到消能效果。
In order to study the influence of the structure parameters of the toothed runner on the hydraulic performance of the emitter and the flow mechanism of the runner, the tooth width a (A), pitch (b), tooth height h (C) The test factors and flow index were used as the experimental indexes. The orthogonal test scheme was selected by the L9 (34) orthogonal test table. The program models were established by CFD numerical simulation software FLUENT and solved numerically using range analysis, ANOVA and linear regression The numerical simulation results are analyzed and the flow field inside the flow channel is studied to explain its energy dissipation mechanism. The results show that the optimal combination of structure parameters of the serpentine labyrinth flowway is A3B1C3, the order of primary and secondary influences is B, C and A. The linear regression model between structural parameters and fluidity indices is established. The local water head losses Achieve energy dissipation effect.