Digital Experimental Analysis of Model-Based Reactor
Natural Circulation System
Aiming at the business problems of high physical risk, high cost and narrow application scope of the current reactor natural circulation system, digital modeling and simulation methods are adopted to model the behavior of the natural circulation system of the reactor to "model reuse and system weight." "Technology", research on digital simulation analysis technology of model-based reactor natural circulation system, establish a set of digital high-fidelity digital experimental system to support the program evaluation, experimental prediction and fault simulation of reactor natural circulation experimental system .
Based on the ThermoFluidSys_TY heat flow system model library and the Modelica standard library, the corresponding system model is quickly constructed according to the natural circulation test loop principle. Under the different heating conditions of the test body, the physical properties of the fluid inside the loop system and the changes of the flow state are simulated. , accuratelypredict the pressure, flow and temperature of each node of the system.
Practice and effect
- The implementation of the natural circulation experimental system design scheme is well realized, which effectively supports the rapid iterative design and optimization of the system principle and parameters, and effectively improves the quality of the system scheme.
- Through the high-fidelity virtual simulation, the performance of the system before the experiment is predicted, and the operating characteristics and the adjustment rules of the system under various experimental conditions are comprehensively analyzed, which provides a good basis for the development of real physical experiments guide.
- Combining the injection of typical failure modes, the system performance changes under fault conditions are analyzed, which provides effective guidance for the limitation of system operation and maintenance and the rapid troubleshooting in emergency situations.
- By combining the high-precision digital simulation results with the high-fidelity three-dimensional demonstration interaction scene, the operation training guidance for the experimenters and operation and maintenance personnel is realized more intuitively and efficiently.