Measured and calculated values of discharge coefficients from flush-inclined holes

The pressure differences required to expel fluid from 2-D flush slots and round flush holes into a cross stream have been measured. The two-dimensional cases have been simulated numerically, using a finite difference method and the κ−∈ model of turbulence. Both the two- and three-dimensional measured results can be expressed as discharge coefficients C D1 based on the average slot dynamic pressure. The numerical simulations of the 2-D case agree well with the measured values of discharge coefficient and demonstrate the sensitivity of the results to the boundary layer of the external flow