风机性能试验中非线性问题的处理

在处理风机性能试验数据时,质量流量和雷诺数相互耦合,需要迭代求解,此时采用可靠的算法能提高计算精度。为了得到既可靠又方便快捷的算法,基于MATLAB编写了两种程序,用具体实例对两种算法进行了验证对比。结果表明,MATLAB自带的非线性优化函数fsolve能较好地满足需要,而两种方法对比使用也使数据处理结果更具可靠性。

Solution of Nonlinear Problems in Fan Performance Test

During the processing of fan performance test data, it needs iterative solution because of the inter- coupling between mass flow rate and Reynolds number, and a reliable algorithm could improve the calculation accuracy. In order to get a reliable and convenient algorithm, provides two programs based on MATLAB, verifies and contrasts the two algorithms with specific examples. The results show that the nonlinear optimization function fsolve, contained in MATLAB, could meet the needs better, and the contrast application of the two algorithms can make the data processing result more reliable.