Abstract:Based on U throttle port structural parameters orthogonal factors: throttle length L, throttle depth H and throttle radius R, throttle performance indicators of U throttle port which include 16 data sets are calculated. Orthogonal polynomial fitting method is applied to deal with throttle performance data sets; as a result, the quantification fitting formula of throttle performance which includes throttle structural parameters is created. Respectively, with analytic formulas and fitting formulas, the analytic values and fitting values of throttle performance evaluation indicators are calculated. By comparing analytic va-lues with fitting values, it is found that the difference between them is almost less than 1%.The compa-rison result shows that the fitting formula can be used to analyze the throttle performance of U throttle port; also applying the fitting formula, the relative influence of different structural parameters can be clearly understood. Furthermore, with the fitting formula, optimized throttle port is obtained. By comparing throttle performance evaluation indicators between optimized throttle port and original throttle port, it is found that the throttle performance of optimized throttle port is improved indeed. As the improvement of throttle performance is hard to be observed directly, the indirect proof can be obtained with flux expe-riments. From the results of flux experiments, the theoretical analysis results are indirectly explained.
袁士豪. 基于规范正交多项式的分压节流阀口节流特性[J]. 排灌机械工程学报, 2015, 33(12): 1056-1061.
YUAN Shihao. Partial port throttle performance based on standard orthogonal polynomial fitting. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(12): 1056-1061.
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