摘要
采用连续型非等时空距GM( 1 ,1 )模型 ,对摩擦因数λ与雷诺准数Re的关系进行了研究 ,建立了可进行连续预测的数学模型 ,并与等时空距模型作了比较 ,所建立模型与实际情况吻合较好 ,精度检验为Ⅰ级 ,模型适宜于粗糙度 (e d)
The continuous non isometric time space grey model GM(1,1) was applied to the study on the friction coefficient and the reynolds number's relation.A mathematical model of continuous prediction was set up and compared with the built model.The results are in good agreement with the measured ones.According to inspection,the model accuracy of every built model is grade one.The model is adaptable to predict the frication coefficient of the pipe system which has certain degree of rough.
出处
《化学工业与工程》
CAS
2002年第3期241-244,277,共5页
Chemical Industry and Engineering
基金
齐齐哈尔大学科研项目
关键词
非等时空距模型
灰色模型
摩擦因数
雷诺准数
预测
Non isometric time space model
Grey model
Friction coefficient
Reynolds number
Prediction
