Leakage analysis of dredger reamer excavation based on numerical simulation of rotating flow field

For the problem of excavation leakage when the reamer works, based on the finite volume method, numerical simulation is carried out by fluent simulation software, and the parameters of each factor are changed to study the concentration distribution and leakage changes in the flow field around the reamer under different working conditions, so as to make clear the influence of each factor on the flow field. The results show that: the changes of reamer rotation speed and traverse speed will have a greater impact on the flow field, and a larger disturbance will cover the influence of particle size changes on the flow field; usually a larger reamer rotation speed and traverse speed have a larger sediment absorption, but in the case of unsuitable depth of cut and tilting angle of the reamer, blindly increasing the reamer rotation speed and reamer traverse speed will lead to the decline in yield.