Review of Relief Valves in Unsteady Flow Behavior

This research article presents a comprehensive review of pressure relief devices (PRDs) in unsteady flow conditions. It discusses the behavior, analysis, and design principles of relief valves, focusing on their effectiveness in managing surge overpressures. The paper includes mathematical models, computer simulations, and guidelines for selecting appropriate PRDs to mitigate surge risks in various piping systems. Key terminology and operational principles are also outlined to enhance understand