dragforce/coefficient
 

hi all

Actually I want to know the value /expression for drag force/coeff for a case a jet(18 mile/hr) hitting perpendicular to a wall(19"x32"). i can use the momentum loss equation but that would bgive an approximate because after hitting there would be some BL generate.I don't want to do CFD for this bcoz i have to use this force for structural analyasis. please any one can help me,it would be very fine for me.

thanks nik