y plus and pressure coefficients
 

hi.
i am working on wind analysis on 3d builidng, i have to obtain pressure coeff., for this i have made grid and have tried many time but as i manage to control y plus value within 30 to 300, the pressure coeff values becomes absurd, i am unable to understand how to manage it, my mesh quality in fluent shows near about 0.8 to 0.85 equiangle skew, 0.85 to 0.88 eqisize skew, and aspect ratio near about 5 to 7, and i think its fine for a 3d mesh...