Calculation method of deposition electrostatic charging current for aircraft
The effective area coefficient K was calculated using the concept of effective projected area.In Comsol software,the Spalart-Allmaras(S-A)turbulence model and particle drag model were used to improve the calculation formula in the standard,and a certain type of aircraft was used as an example to simulate the flow field and particle tracking.It was found that the larger particle diameter indicated the larger effective projected area;the higher flight speed indicated the more number of particle collisions;the charging current density increased with the rise of the cruising altitude.Finally,it was concluded that the maximum charging current density of the aircraft was 395 μA/m2,which was very close to the actual observation value and the error was within 1.25％.
deposition electrostaticcharging current densityaircrafteffective area coefficientturbulence model
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