enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Darcy–Weisbach equation - Wikipedia

   en.wikipedia.org/wiki/Darcy–Weisbach_equation

   Δh = The head loss due to pipe friction over the given length of pipe (SI units: m); [b] g = The local acceleration due to gravity (m/s 2). It is useful to present head loss per length of pipe (dimensionless): = =, where L is the pipe length (m).

3. Hazen–Williams equation - Wikipedia

   en.wikipedia.org/wiki/Hazen–Williams_equation

   The Hazen–Williams equation is an empirical relationship that relates the flow of water in a pipe with the physical properties of the pipe and the pressure drop caused by friction. It is used in the design of water pipe systems [1] such as fire sprinkler systems, [2] water supply networks, and irrigation systems.

4. Friction loss - Wikipedia

   en.wikipedia.org/wiki/Friction_loss

   The following table gives flow rate Q such that friction loss per unit length Δp / L (SI kg / m 2 / s 2) is 0.082, 0.245, and 0.816, respectively, for a variety of nominal duct sizes. The three values chosen for friction loss correspond to, in US units inch water column per 100 feet, 0.01, .03, and 0.1.

5. Darcy friction factor formulae - Wikipedia

   en.wikipedia.org/wiki/Darcy_friction_factor_formulae

   The phenomenological Colebrook–White equation (or Colebrook equation) expresses the Darcy friction factor f as a function of Reynolds number Re and pipe relative roughness ε / D h, fitting the data of experimental studies of turbulent flow in smooth and rough pipes. [2] [3] The equation can be used to (iteratively) solve for the Darcy ...

6. Minor losses in pipe flow - Wikipedia

   en.wikipedia.org/wiki/Minor_Losses_in_pipe_flow

   Just as certain aspects of the system can increase the fluids energy, there are components of the system that act against the fluid and reduce its energy, velocity, or momentum. Friction and minor losses in pipes are major contributing factors. [1] [2] [3] [4]

7. Pipe network analysis - Wikipedia

   en.wikipedia.org/wiki/Pipe_network_analysis

   Once the friction factors of the pipes are obtained (or calculated from pipe friction laws such as the Darcy-Weisbach equation), we can consider how to calculate the flow rates and head losses on the network. Generally the head losses (potential differences) at each node are neglected, and a solution is sought for the steady-state flows on the ...