Field and Wind Tunnel Experiments of Wind Field Simulation in the Neutral Atmospheric Boundary Layer

To investigate the pollutant dispersion of a nuclear power plant, a field tracing experiment was carried out in neutral stratification weather with the main wind direction SSW. On this basis, a wind speed profile and turbulence intensity profile consistent with the site were created in the wind tunnel. Meanwhile, how to generate a wind field of neutral stratification in a wind tunnel was studied in detail. Finally, a 1:1000 nuclear power area model was made to conduct tracing experiments in the wind tunnel. The results show that when the horizontal and vertical distances of the spire are 300 mm and 500 mm, and the horizontal and vertical distances of the rough element are 250 mm and 500 mm. A wind speed profile with a wind profile index of 0.321 was generated in the wind tunnel (0.334 in the field test), and the wind tunnel tracer experiment had the same diffusion trend as the field, which verified the accuracy of the flow field.

Automated summary

In this study, a field tracing experiment was conducted to investigate the dispersion of pollutants from a nuclear power plant under neutral stratification weather conditions with a main wind direction of SSW. Based on this, a wind tunnel experiment was conducted to create a wind speed profile and turbulence intensity profile consistent with the site. The results showed that the wind tunnel tracer experiment had the same diffusion trend as the field experiment, validating the accuracy of the flow field.