Methods and systems for optimizing aerodynamic characteristics of flow equalization air ring structures in medium-speed coal mills based on fluent simulation

A system for optimizing aerodynamic characteristics of a flow equalization air ring structure in a medium-speed coal mill based on Fluent simulation, the system comprising:

• a modeling module:
• configured to determine a flow equalization air ring structure in a coal mill and establish a model of the flow equalization air ring structure;
• a meshing module:
• configured to mesh the model of the flow equalization air ring structure;
• a checking module:
• configured to check meshes and set mesh parameters;
• a selection module:
• configured to select an energy equation model, and set a turbulence model and a Discrete Phase Model (DPM);
• a condition module:
• configured to set a boundary condition;
• an initializing module:
• configured to initialize computation information of a mesh node;
• a computation module:
• configured to set a residual curve, establish a monitoring curve based on a total mass flow rate at an inlet and outlet of a flow field, set a total number of computation steps and computation step size of the energy equation model, and perform iterative solving to obtain a computation result;
• a judgment module:
• configured to judge whether a computation process is convergent based on the residual curve, the computation result, and the total mass flow rate at the inlet and outlet of the flow field, in response to judging the computation process being convergent, perform post-processing on the computation result to obtain a distribution result of parameters of the flow field;
• and in response to judging the computation process being not convergent, adjust the meshes, the energy equation model, and the boundary condition, and re-calculate until the computation process converges;
• a storage module:
• configured to save a computation result after the computation process is convergent;
• and
• an optimization module:
• configured to modify parameters of the flow equalization air ring structure in the medium-speed coal miller, and after completion of modification, repeat steps of the modules to obtain a plurality of simulation results, compare the plurality of simulation results to obtain parameters of an optimal flow equalization air ring structure, and complete optimization.