BERNOULLI EQUATION FOR STATIONARY FLOW OF INCOMPRESSIBLE NEWTONIAN FLUID

The generalization of the Bernoulli equation to the flow of incompressible newtonian fluid is derived. It is shown that classical generalization, which says that the specific mechanical energy flow diminishes downstream along the tube for the amount equal to the power of internal viscous forces, is correct only for so-called developed flows. Two examples of such flows are given: developed axial and developed spiral flow. Generally, the specific power of viscous forces should be subtracted from the specific mechanical energy flow in given cross-section. The difference of so corrected specific mechanical energies flow in outflow and inflow cross-section equals dissipated mechanical energy in the tube.

  • Supplemental Notes:
    • Strojarstvo, v 37 n 1/2, Jan-Apr 1995, p 43 [6 p, 5 ref]
  • Authors:
    • Mr a, Z
  • Publication Date: 1995

Language

  • Undetermined

Subject/Index Terms

Filing Info

  • Accession Number: 00718751
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 27 1996 12:00AM