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一绪言目前,在有关书籍及实践应用中,进行关於过滤问题计算时所用的过滤方程式,其最后形式皆用下式表示: Q~2+2QQ_θ+Q_θ~2=KF~2τK=2ρ/μσε这个方程式应用於实际中有下述主要缺点: (i)已知,过滤过程主要分两类方式进行,即:等压过滤与等速过滤。它们之间在实际计算中,确实存在着区别,但在上式中,根本不能看出。(ii)应用上式时,必须首先定出K值。但知
An introduction At present, in the relevant books and practical applications, the filtration equation used in the calculation of filtration problems, the final form is expressed by the following formula: Q ~ 2 + 2QQ_θ + Q_θ ~ 2 = KF ~ 2τK = 2ρ / μσε this The equation has the following main disadvantages in practice: (i) It is known that the filtration process is mainly performed in two different modes, namely, isobaric filtration and constant-velocity filtration. There is indeed a difference between them in the actual calculation, but in the above formula, it can not be seen at all. (ii) When using the above formula, we must first set the K value. But know