| OCR Text |
Show Measurement lind Interpretation -10- of Flames Issued from a Generic Multi-Fuel Burner 022 - 0.20 --Cc-·S-,~m2p9l.e SAlrvv• e• Mg eaa s16ement c·' c· ~ o.~ -6-0II·c.ra. ArnNr w .. ~~ ~ 0:6 1-. .... ol- ••• tA.eael :\ :£ c IA ~ 0.14 Ci5 0:2 if I \ z Cw 0:0 > o.m ,~Y \\ ~ ::J 0.06 i<CiDi 0.Q4 # cl 0a: om \c·o ~t. ~ 0.00 ~ 1) '00 DROPLET DIAMETER ~) Fig. 3.2 Droplet Size Distnbutions. IFRF-~ Further analysis is currently being performed to assess the suitability of different distnbution models to the data. From these analyses a distribution model will be selected which will allow the effect of spray parameters on mathematical modeled spray combustion to be easily assessed. 3.3.2. Mass-Fluxes. The mass flux for size class if mi , was then detennined according to . d3 ni·;r· p.i . d3 .. 6 . n i • p.i mj = mllChuU • k' 3 = mactual • k ~ n i ·;r·dp.i ~. d 3 ~ ~ni' p.i i=l 6 i=l The size distribution in sprays is biased towards larger drops at the outer periphery. However, the data was carefully scrutinized and radial variations can be neglected. The normalized number fluxes, 1zi , described above are therefore used to describe the relative distribution of droplet number fluxes. The geometrically-weighted number fluxes was fitted with a Gaussian distnbution function as shown in Fig. 3.3. The minor peak at 190 was neglected in this analysis and was not present in the other detailed cases. The location of the center of the spray remains near the spray half-angle of 250 for all cases at AD: 100 nun with a standard deviation of 3.30 for this case. |
