According to the theory of swirling jet and characteristics of the tunneling working face, swirling jet ventilation is applied to control the dust diffusion, and to prevent the dust and the gas entering and concentrating in the working area of drilling machine.
The result of study in this paper, on the one hand, is an important part of RJM system design, offers important parameters for the design of rotary jet main frame, and is provided with practical engineering application;
The influences of nozzle and turbo geometry on whirling flow intensity of rotational jet and rotational jet flow performance are studied. A theoretical analysis and calculation about whirling flow and intensity of jet corresponding to rotation nozzle are carried out.
Laminar swirling jet with allowance for buoyancy forces
A study is made of the laminar flow of a viscous incompressible fluid in a swirling jet that is produced by the action of a point source which transmits to the medium surrounding it a finite momentum flux.
Solution to the problem of a swirling jet from an annular orifice
In , the jet source scheme was used to find a self-similar solution for a weakly swirling jet.
The results of calculating the diffusion of a dispersed admixture in turbulent swirling jet flows using the model of momentum transfer in a turbulent gas-dispersion flow proposed by the authors are presented.