Based on the technique of the grading fire in recirculation zone,a slit bluffbody burner has been designed and applied to the power boiler in BaoSteel Power Plant for the combustion of poor blast furnace gas(BFG)instead of old type burners.

Numerical simulation of pollutants convection diffusion in coastwise recirculation zone;

Up till now,the key problem of how to put the oil moisture into the recirculation zone has been solved,and the appropriate value of the main parameters were obtained through the experiments.

The PIV technology was applied to study flow fields of the flame holder wake,which reveals that the good combustion characteristics depend on the recirculation zone structure of slit flame holder and the particular vortex shedding patterns.

The heat balance model in recirculation region of flame-stabled boat is established with a specific combustion device.

This paper analyses cold state velocity field with slitting bluff body in open space and discusses influencing factors upon length and reflux rate of recirculation region such as characteristics of center and main jets, slit width, and primary air.

The length of recirculation region increases from Re = 3.

The k ε turbulent model, the three gase mixing combustion model and the composite radiosity model are used to simulate numerically the central backflow region of the turbulent diffusion flame in a gas burner with the PHOENICS software.

In the pater,the authors present the experimental results of DNGP 100 natural gas flat flame burner,make a research on the diameter and thickness of flat flame of this burner,discuss the variations of the maximum diameter and length of backflow region,experiment the negative pressure distribution on the central line of backflow region.

By use of 3-D ultrasonic doppler velocimeter,the turbulence characteristics of water flow in the spur dike head and backflow region are observed and analyzed systematically.