PRESSURE LOSS IN THE BRANCH AND CHANGE IN LOCAL RESISTANCE OF THE CHANNEL
Keywords:
pressure loss, branch, local resistance, resistance coefficient, flow velocity, Bernoulli equation, hydrodynamics.Abstract
The article examines pressure losses in a branch and the variation of local resistance within a channel during fluid flow separation. It is shown that the pressure distribution in the branching zone is non-uniform and depends on both the geometric parameters of the channel and the flow velocity. Based on Bernoulli’s equation and the momentum equation, relationships are derived for calculating pressure losses and the local resistance coefficient. An expression is obtained for the optimal branch flow velocity at which pressure losses are minimized. Analysis of experimental data confirms that as the flow velocity increases, pressure losses first decrease, reach a minimum value, and then increase again. It is established that the local resistance coefficient depends on the velocity and the geometry of the channel, which must be taken into account when designing hydraulic systems with branched channels.
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Ganisher Yunusov Investigation of the problems of lateral outflow of liquids. Journal of Physics and Mathematics 1 (4) 2020
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