Steam turbine blade through-flow modeling method based on CFD

The invention relates to a modeling method, in particular to a steam turbine blade through-flow modeling method based on CFD (computational fluid dynamics), which comprises the following steps: (1) geometric model pretreatment: carrying out geometric modeling parameter identification and programming processing on data in steam turbine blade through-flow, and carrying out geometric model identification, topology partitioning and mesh generation; (2) calculation model pretreatment: establishing a corresponding calculation area by utilizing software, giving a working medium required by calculation, setting a model and parameters, and setting solution setting of numerical calculation, thereby completing establishment of an equation set; (3) numerical calculation: solving by using a solver, andstopping calculation after the specified calculation residual error requirement is met; and (4) post-processing: processing the calculation result to obtain the data of each variable in the whole calculation process, and ana