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Show Table 1: Test Matrix. CWS WATER VstuRpv ^ m ^ 'AW Cm3/h] WIRL 2.23 3.48 4.39 z = 10 cm r[cm] = 8.15 4 4 4 0 13.59 4 4 4 1.25 20. 4 4 4 2.5 39 4 4 4 3.75 STRAIGHT 27.18 48 MEASUREMENTS -48 MEASUREMENTS SMD = A exp (_™ B 48 MEASUREMENTS (1) the coefficients have been calculated to fit the experimental data. A computerized fitting technique (MINITAB) was applied to obtain the coefficients. The dependency the 3 coefficients A, B, and C on the experimental parameter, V (air flow), V r r AIR SLURRY (slurry/water flow), was identified leading to the following empirical formulas: 103696 A = --pT" C/im] AIR (2) (-0.214(V -3.43) -0.33+0.039V ) r, r r , A SLURRY AIR r 2-y B = 6.5 . 10 [cm ] (3) C = 2.57 log V - 1.742 [cm] AIR V [mVhJ AIR V U/min] SLURRY (4) Substituting the equations (3-4) into equation (1) provides an empirical formula to predict the SMD at a given radial location as a function of the dominant flow parameters, air flow, and slurry flow, and the nozzle dependent geometry of atomization air introduction (swirl). 8 |
