Pierre, Some authors define "head" as the depth of a fluid (meters in SI) which is usual in the hydrostatics of fluids (constrained or unconstrained), and some authors define "head" as a pressure (pascals in SI) which is usual in the hydrodynamics of fluids (unconstrained or constrained). There is no universal and exclusive use of the term "head" in all the branches of hydraulics.
---- Original message ---- >Date: Wed, 24 Sep 2008 13:14:10 -0400 >From: Pierre Abbat <[EMAIL PROTECTED]> >Subject: [USMA:41748] hydraulics in metric >To: "U.S. Metric Association" <[email protected]> > >I'm taking hydraulics. The prof introduced the concept of head, which is >energy divided by weight and has units of length. There are potential head >(which is simply elevation), kinetic head, pressure head, and head loss (to >friction or viscosity). When doing hydraulics in metric, do you use head, or >do you compute in joules per kilogram, multiplying elevations by gravity? > >Pierre >
