Influence of the arrangement of fibers in a composite pipe on the parameters of water hammer

The phenomenon of water hammer in a single-layer composite pipe is investigated by the known method of characteristics, with which it is possible to determine the pressure and flow rate (velocity) of a moving fluid [1]–[5]. A methodology has been developed and a program has been created in the Delphi environment that makes it possible to determine the parameters of a water hammer in a composite pipe (wave velocity, pressure and fluid flow). The calculation and analysis of the results on the influence of the physico-mechanical characteristics of a water hammer on the head (pressure) and flow rate of the liquid is carried out on the example of a polyethylene pipe reinforced with a winding of steel fibers [4] with various reinforcement schemes [6], [7]. The velocity of the liquid wave in the orthotropic tube was determined according to the developed method [8], it is shown that the results obtained are in good agreement with the other experimental and theoretical data.