[oj.bulmer]

We have been using Idelchik's "Hydraulic Resistance Handbook" for ages to find the resistance coefficients of perforated sheet, wiremesh and other porous regions. But irony is it is 2013 yet we are using handbook based on compilation of research more than two decades ago. Though there have been reprints of latest edition, the information has changed little.

I was wondering if someone knows about any other database/literature that considers the relatively latest research done in this area? In the era where everything meta-morphs within few years, there must be better ways invented after Idelchik compiled this handbook.

OJ.