Method for simulating wind field by coupling WRF (weather research and forecasting) and OpenFOAM modes

The invention relates to a method for simulating a wind field by coupling WRF (weather research and forecasting) and OpenFOAM modes. The method comprises the following steps of outputting and processing WRF data in a meso-scale weather mode; manufacturing a small-scale open-source OpenFOAM refined network in a CFD mode for calculating hydromechanics; transferring data between the WRF and OpenFOAM modes; driving the OpenFOAM mode to calculate. The method has the advantages that by adopting the technical scheme, the coupling calculation of the WRF and OpenFOAM modes is realized, the data with several-mile horizontal resolution in the WRF mode is downscaled into the data with 30m resolution in the OpenFOAM mode, the wind field simulating effect in the WRF mode under the complicated terrain is improved, the business levels of wind resource evaluation and wind power prediction are improved, and the predicting accuracy is improved.