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Show Measurement and Interpretation - 9 - IFRF-~ of Flames Issued from a Generic Multi-Fuel Burner L " i21C £..Jizi, o' J,TIIJ1Prr 'i r·dr·d f) JOT ... ° • j=l d ni = L " . i21CITIIJ1Prr £..JntotJU ,j· 'i r·dr·d f) o 0 T ... ,o J=l ' where Tuppu,j and Tlowtr,j are the upper and lower limits of an annulus around the spray center. This implies that the flux is uniform in the annulus surrounding the axis of the whole spray and not individual spray cones (along the axis of the oil lance). Method 2 - Off-Center Annular Weighting. To account for the circumferential variation in droplet flux in the averaging procedure the same integral is evaluated with the limits in r replaced by functions in 9. The "Off-Center Annular Weighting" method is given by: L 11C161g ~n. o ' (S, T·dr·dB ~ I,J 0 h(tJ) n o =~J=_l ______________ _ I L Itr161g(III LntotJU j' T·dr ·d (} ° 1 '0 11(111 F where g(9) and h(9) give the loci of circles centered at (h, P) which was chosen at the point of maximum event rate. These areas were numerically integrated. The normalized number fluxes are then used to determine the droplet pdf j(dp/j ) as: i=1 The droplet probability function is shown in Fig. 3.2 for the data at the spray cone center and profile averaged according to the two methods descnbed above. |