Water hammer phenomenon involves the transformation of kinetic energy in pressure energy,\nthis transformation occurs as the fluid conditions change inside the pipe in quite a short time. Industry\nrequires to affront frequent flow interruptions in pipe systems due to the closing of valves\nor stopping of pumping equipment. This phenomenon can initiate serious damages like destruction\nof the pipe system involving leakage of the working fluid to the environment. If the system\noperates in a fragile environment, as in cold regions, concern about the consequences of leakage\nincreases due to the variation of physical properties of fluid as well as the pipe material as a function\nof the temperature. Water hammer effects can be controlled focusing efforts on reducing the\npressure increment that takes place once the phenomenon is presented. Some methods try to reduce\nthe time of closure or the rate of change before the closure using special valves, others install\nadditional elements to absorb the pressure surge and dissipate energy, others install relief valves\nto release the pressure, and others try to split the problem is smaller sections by installing check\nvalves with dashpot or non-return valves. Splitting the pipeline into shorter sections is often used\nto help preventing the pipeline length of water falling back after a pump stops. In this paper the\nnumerical results of maximum and minimum pressure values at both ends of a closed section are\ncompared to experimental data. The numerical results follow the experimental trends.
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