流体测量中非线性修正方法的研究

Research of Revise Method of Nonlinearity on Fluid Measure

通过理论分析和测试数据剖析了流量系数非线性和临界雷诺数的不确定因素。在此基础上,采用三段系数修正算法,将其流量函数进行线性化,使得流体的流量指示值与实际流量值相一致。采用提高流体流速的方法,使层流和紊流的临界流态下移,在总流量降至较低的情况下,仍然处在紊流状态。

Flux coefficient nonlinearity and uncertainty of Reynolds number existing were analyzed by means of theoretical analysis and experimental data. Three-piece coefficient correction algorithm was adopted to linearize the flux function, and make the indicated flow of fluid to be concordant with the real flow. By elevating the diffluence flux, the critical state between laminar flow and impingiment flow is transferred downwards so that even under the lower total flux the fluid can remain at the impingiment flow.