Multi-physics Coupling Calculation On Marine Heat-exchange Inertia Filter

Intake filtration unit is one of the most important component of the marine power system, whose aerodynamic performance directly determines the cycle efficiency of the marine gas turbine. That seeking the flow field with excellent resistance characteristic is one research emphasis all along, but under the cool condition, the aerosol particles flowing through the intake filtration unit will condense on the blade surface, which result in interior flow field deform, aerodynamic performance decreased and effect the gas turbine running normally, therefore the heat-exchange inertia filter is used in cold zone as first stage of the filtration unit to enhance the temperature of intake air. In the paper, multi-physics coupling method is applied for simulating the mechanical property and flow property of the heat-exchange inertia filter.The main work can be summarized as follows:Firstly, simulating the flow property of the heat-exchange inertia filter with the FLUENT, determining the variation regularity of the total pressure loss and outlet temperature with the inlet rate, inlet temperature and heating temperature.Secondly, simulating the temperature field and stress field of the blades of the heat-exchange inertia filter with the ANSYS, discussing the variation regularity of the blade deformation with the pressure and temperature of the heating saturation vapor and determining the influence extent of the deformation to flow field.Finally, according to the stress distribution regularity of the blade, optimizing the internal structure of hot runner of the blade, and discussing the effect of some parameters of blade to the flow field characteristics.