3/9/2023 0 Comments Pipenet vs fluidflowTherefore a detailed understanding of transient flow can be very important. Or it may be important to maintain a steady flow for example in the process industry. Transient flow can result in significant transient pressures that may exceed the design limit of the pipes and fittings. Water hammer on the other hand is where the compressibility of the fluid has the dominant effect such as the sudden closure of a valve. But strictly speaking surge is where the mass oscillation of the fluid is the dominating force and the compressibility of fluid is not significant, for example two connecting reservoirs oscillating up and down. Transient flow is usually referred to as surge or water hammer, and the terms are commonly interchanged. Often transient flow conditions persist as oscillating pressure and velocity waves for some time after the initial event that caused it. When changes occur to a fluid systems such as the starting or stopping of a pump, closing or opening a valve, or changes in tank levels, then transient flow conditions exist: otherwise the system is steady state. Transient flow, is flow where the flow velocity and pressure are changing with time.
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