Experimental Investigation on Atomization and Dustfall Characteristics of Combined Nozzles for Shearer External Spray in Fully Mechanized Coal Mining Face

Table 2

Mean droplet velocity at different nozzles.

Velocity vector	Nozzles number	Droplet velocity (m/s)
		A	B	C	D	E	F	G	H	I
Axial velocity	1#	36.652	25.991	33.594	27.293	18.406	19.926	26.716	22.886	25.575
	2#	32.774	24.693	28.834	25.426	16.397	18.071	23.356	20.659	22.099
	3#	47.468	32.693	40.215	35.057	23.256	25.653	30.499	26.659	27.471
	4#	46.226	30.499	38.527	32.903	20.408	23.373	29.148	25.512	26.576
	5#	30.962	21.314	25.776	22.925	16.134	19.065	23.695	20.294	21.815
	6#	41.587	28.265	38.201	29.324	19.179	21.884	27.254	23.573	25.127
Radial velocity	1#	1.265	2.443	1.635	2.668	2.323	2.101	1.840	2.315	2.703
	2#	1.789	3.743	2.566	4.029	3.769	3.393	3.047	4.072	4.337
	3#	1.218	2.317	1.755	2.634	2.236	1.936	1.657	1.990	2.303
	4#	1.586	2.980	2.189	3.245	2.858	2.560	2.406	3.036	3.807
	5#	1.870	3.305	2.419	3.730	4.155	3.486	3.116	4.267	4.675
	6#	1.783	2.946	2.278	3.220	3.684	3.171	2.808	3.542	4.292