DYNAMIC MODEL FOR SIMULATION OF CHECK VALVES IN PIPE SYSTEMS

Abstract

In the planning phase of pipe systems, the behaviour of pipe systems under irregular operating conditions should be controlled. This checking process can be made with the aid of computer programs. These computer programs have numerical models for each element (pipe, pump, different valves, air vessel, etc.) of the pipe system. Check valves are pipe accessories that can prevent back-flows in the system after the shut-down of the pump. This paper presents a mathematical model, which can be applied to simulate the behaviour of check valves, not only in case of full closure, but also at changes of flow conditions in the pipe. The research in this field is sponsored by the fund OTKA (OTKA T029073).