Co-Simulation Modeling and Multi-Objective Optimization of Dynamic Characteristics of Flow Balancing Valve

The poor dynamic characteristics of the flow balance valve used in a ship’s HVAC system are main reasons for hydraulic imbalance and high energy consumption system. A new adjustable structure is designed, which composed self-operated pressure regulator an electric V-shaped ball series. When fully opened at 20 t/h level, cannot meet requirements. co-simulation method that combines MATLAB/Simulink UDF grid proposed to study with rate under different drop step signal interference. calculation each micro-element time converges, core motion parameters, boundary conditions, axial medium force, outlet interactively transmitted two simulation environments. discrepancy between test results less than 5%, verifies accuracy model. Aiming most severe characteristic working condition where stepped from 30 300 kPa, influence structural parameters on analyzed. surrogate model combining RSM RBF improves optimization efficiency fitting accuracy. To improve convergence traditional NSGA-II algorithm, key optimized by algorithm SDR. show improved, stabilized does not exceed 4.5%, relatively constant. Therefore, can be applied prediction valves, such as provide guidance developing high-precision valves.