Computational Fluid Dynamics Simulation and Optimization of Hydropneumatic Spring Damper Valves for Heavy Vehicle Applications

To satisfy the design requirements for a hydropneumatic spring damper valve, inlet–outlet pressure drop (ΔP) and axial force on spool (FZ) of valve were investigated using fluid–solid coupling simulations multi-objective optimization, along with effects diameters three internal holes (DA, DB, DC) in ΔP FZ. First, meshed computational fluid dynamics model was established based its geometric structure. Next, flow rate (Q) diameter damping hole structure FZ investigated. The results showed that varied nonlinearly Q. For given Q, decreased as DA, DC increased. not related to DA DC, but it DB Finally, optimized by defining response variables explanatory variables. best configuration = 8.8 mm, 5.55 6 mm. In this configuration, 0.704 MPa 110.005 N. closer middle value target range than initial design. difference between simulated values from 0.28% 0.0045%, satisfying application requirements.