Calculation and investigation of the aerodynamics of a guniting stream

where R(x) is the radius of the stream at a distance of x from the orifice in m, p_ is the density of the gaseous phase in kg/m 3, ug is the velocity of the gaseous phase in ~/sec, r is the current value of the radius of the ss in m, S is the number of fractions of the solid particles, n. is the concentration of particles of the i-th fraction in a unit of volume in l i/m ~, u i is the velocity of movement of the particles of the i-th fraction in m/sec, m. is the average weight of a particle of the i-th fraction in kg, m i = (4/3)~6~pi, Pi is th~ density of the particles of the i-th fraction in kg/m ~, 6. is the average diameter of the particles of the i-th fraction in m, and i is the number of theZfraction of the guniting mixture. Here and subsequently, 0, m, and ~ designate the values of the parameters at the nozzle edge, on the axis, and on the outer edge of the stream. For the i-th fraction the rule of the preservation of its mass flow rate Qi,o is preserved: