Where would I find tables for K values of different diameters and different bends in pipes?
Sorry but ,you can't just say k without saying what does it mean,Does it mean stiffness of the pipe or what ?
Every text book will give you a different answer to this question some go by the pressure that the liquid is being delivered at. some base it on roughness of the interior of the pipe. the second part of your question. If you can find some old or maybe even new handbooks on piping systems they have pipe sizes, flow at various pressures, resistance to the flow caused by roughness of the pipe and the resistance to that flow that an elbow, valve or any fittings in the system. My advice to you, look in the phone and see if you can find a mechanical engineering firm that has some old books on piping systems and see if those books have the info you want. Or maybe they can tell you where you can buy a book with that info in it. You could go online to a pipe manufactorer or seller, or maybe even visit a local plumbing supply house and tell them that you are looking for a book that gives charts for resistance to flow in certain types of pipes and fittings. Good luck on this, it is a very interesting subject to study.
If you are talking about the resistance coefficient, according to Fluid Mechanics for Chemical Engineers by de Nevers, K 0.3 for a 45 degree standard elbow. This is likely to vary with every textbook you look at. So just site your work.
