Method for calculating turbulence buffeting responses of heat exchanger

The invention discloses a method for calculating turbulence buffeting responses of a heat exchanger. The method comprises steps as follows: a flow field of a secondary side of the heat exchanger is calculated by thermotechnical hydraulic system analysis software to obtain parameters of flow fields, distributed along a heat exchange pipe, of flow on the secondary side; on the basis of the parameters of the flow fields and the structure parameters of the heat exchange pipe, whether the parameters of the flow fields belong to a first preset range and a second preset range is judged; if the parameters of the flow fields belong to the first preset range and the second preset range, a reference equivalent power spectral density function of exciting force is calculated by means of formula (1)-(6); a root-mean-square value of the turbulence buffeting vibration responses is calculated by means of the random vibration theory based on a density function, flow-induced vibration evaluation is performed by means of the root-mean-square value, and the technical effects of more reasonable input and more accurate analysis result during calculation analysis of turbulence buffeting responses of the heat exchanger are achieved.