Hydraulic Losses of Flow Control Devices in Pipes.

Simplified numerical simulation as the base for throttle flow characteristics designation

“…In the elaboration [6] the most popular were subjected to verification. In the comparison the function showed in [7] was omitted due to some imperfections in projection of the full range related with significant disconnections in the range of maximum opening, as well as the function presented in [8], due to significant complexity of dependencies. Usage of the research results of three different in construction throttle valves it was showed that commonly used functions [9] and [10] does not fully satisfy the flow characteristics of any of them, especially in the range of wide open throttle.…”