operationally defined, but the author's illusthe design engineer is already familiar with trations indicate that many writers do not them. However, as in other chapters, suffiseem to realize this.
Particularly welcome cient references are given so that one may was his severe criticism of fundamental weakreview the literature as the occasion arises. nesses in the hydraulic radius theory of per-One disturbing feature about this book is meability and of the widespread abuse of the that it is quite expensive, which could mean Reynolds number.
Most engineers, brought that it will find its way mainly into company up on the hydraulic radius theory, and plagued libraries. by the variable "constants" it entails, have The authors are experienced engineers and never heard of the more promising drag and have spent a combined total of about 22 years statistical theories.
Again, engineers habitin process and project work. ually try to use the Reynolds number as a E. J. NOLAN universal criterion of similitude, when in fact, General Electric Co, as the author remarks, it can properly be so used only for straight tubes.