... measure the angle of rotation. xyzxyzFLOW0o -1 0o -3 0o -5 0o30o50o -1 10o -1 00o12SJ, 3 4 567FLOW0o6.5o13oSJ3 -6 .5o -1 3o Fig. 6. Schematic diagrams of sphere: Plan ... be in good agreement with Johnston’s experimental data and momentum integral technique. -1 0.0 -8 .0 -6 .0 -4 .0 -2 .00.02.0 4. 06.08.010.00.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0X ... technique , AIAA journal,Vol.19, pp. 34 0-3 45 Bienkiewicz, B.,& Sun, Y .(1992). Local Wind loading on the Roof of a Low-rise Building, JWEIA,Vol 45 , pp.1 1-2 4 Calvert,J.R.( 1967). Experiments...