In recent years, an explosive increase of marine organisms, widely dispersed by tides, currents, and waves, has resulted in multiple accidents including the blockage of the cooling water intake system, or even shut down. To mitigate such risks, debris-blocking net systems have been widely implemented at coastal nuclear power plants to intercept the debris effectively. The hydrodynamic performance of net panels is crucial for ensuring the operational reliability and maintenance efficiency of nuclear facilities. In this research, a two-dimensional viscous CFD model was developed to analyze a debris-blocking net panel, with a specific focus on the effect of bio-fouling on its hydrodynamic behaviors. Bio-fouling accumulation was simulated by applying partial concentrations at each net knot under varying solidity ratios. The results indicate that the solidity ratio exerts a more substantial influence on the drag coefficients than the current velocity.
Song et al. (Sun,) studied this question.