To reduce drag,bionic surface structures can be applied to the surface of underwater vehicles,the inner wall of pipeline transportation,and the surface of ships.Bivalves'surface morphological features have excellent drag reduction properties.A bionic clam surface morphology drag reduction method is proposed,and a bionic surface drag reduction structure is designed based on microscopic images of its shell surface morpholo-gy characteristics,inspired by the excellent motility of natural clams in a muddy environment.Using the multi-phase flow Mixture model in the CFD numerical simulation method,the three designed bionic surface struc-tures are simulated laterally and compared to the smooth surface structure for drag reduction.The results show that the three bionic surface structures have different drag reduction characteristics in the transverse simulation at different two-phase flow velocities,with the ribbed nodular surface structure having the best drag reduction performance.The designed bionic surface structure serves as a model for the subsequent investigation of the drag reduction structure in solid-liquid two-phase flow.
bionic surface drag reduction structuremultiphase flownumerical simulationMixture model
维普
万方数据
