Supersonic jet characteristics of two parameter oxygen lance nozzle

2021 ◽  
pp. 1-13
Author(s):  
Chao Feng ◽  
Tao Xia ◽  
Guangsheng Wei ◽  
Jianfeng Dong ◽  
Rong Zhu ◽  
...  
Keyword(s):  
Supersonic Jet ◽  
Oxygen Lance ◽  
Jet Characteristics ◽  
Two Parameter

Research and Application of New Oxygen Lance for BOF Steelmaking

2011 ◽  
Vol 335-336 ◽  
pp. 74-79 ◽  
Author(s):  
Jiang Ping Rao ◽  
Guang Qiang Li ◽  
Zhi Zheng Yang
Keyword(s):  
Operation Mode ◽  
Supersonic Jet ◽  
The Other ◽  
Smelting Process ◽  
Oxygen Lance ◽  
Oxygen Equilibrium ◽  
Other Hand ◽  
Equilibrium Control ◽  
Jet Characteristics

This paper compares the structure and basic points of the new lance with traditional ones, analyses the new design with center hole in head in fields of theoretical supersonic jet characteristics including penetrating depth and stirring energy, operation mode in smelting process and. The application results show its advantages in keeping whole dephosphorizing rate, final carbon-oxygen equilibrium control of steel and cost reducing, on the other hand, point to its several drawbacks. Optimize solutions are introduced at the end.

Effect of operation parameters on supersonic jet behaviour of BOF six-nozzle oxygen lance

2014 ◽  
Vol 41 (9) ◽  
pp. 699-709 ◽  
Author(s):  
M. M. Li ◽  
Q. Li ◽  
L. Li ◽  
Y. B. He ◽  
Z. S. Zou
Keyword(s):  
Supersonic Jet ◽  
Oxygen Lance ◽  
Operation Parameters

The Experimentation and Imitation Study on Flow Field of Coherent Jet

2010 ◽  
Vol 150-151 ◽  
pp. 930-936
Author(s):  
Kun Liu ◽  
Ren Zhi Han ◽  
Chun Yang
Keyword(s):  
Flow Field ◽  
Supersonic Jet ◽  
Jet Flow ◽  
Compressed Air ◽  
Measuring System ◽  
Low Density ◽  
Flow State ◽  
Oxygen Lance ◽  
Coherent Jet ◽  
Cold Condition

By oxygen lance measuring system, under the normal temperature (cold condition) systematic study is carried on traditional supersonic jet flow field that is simulated by compressed-air and on coherent jet flow flied which is accompanied by low density helium in this paper, By commercial software FLUENT, associated with experimental data, the standard double equation K- model is revised appropriately with C1=1.45，C2=1.88. The behavior of axis symmetric jet can be predicted better by simulated results. The flow state of traditional supersonic jet and the characteristic of coherent jet flow flied under vice-hole helium low density concomitance situation are analyzed systematically.

scholarly journals Numerical Study of Characteristics of Underexpanded Supersonic Jet

2020 ◽  
Author(s):  
Priyadharshini Murugesan ◽  
Arjun Biju Kumar ◽  
Akhil Teja Kambhampati ◽  
Shashank Pillai ◽  
Girish Chandar Chandrasekar ◽  
...  
Keyword(s):  
Mach Number ◽  
Numerical Study ◽  
Pressure Ratio ◽  
Supersonic Jet ◽  
Working Fluid ◽  
Shock Cell ◽  
Specific Heats ◽  
Supersonic Core Length ◽  
The Mean ◽  
Jet Characteristics

Correlations for the supersonic jet characteristics, the mean shock cell length and the supersonic core length, have been obtained in terms of the jet parameters. The jet parameters considered in this study are the exit diameter of the nozzle (de), the design Mach number (Me), the nozzle pressure ratio (NPR) and the ratio of specific heats of the medium (γ). The parameters were varied as follows: exit diameters, from 0.5 to 25 mm; Mach number from 1 to 3; the NPR from 2.14 to 35. Initially, working fluid used is cold air and then effect of variation of γ is taken into consideration. The computational model has been validated and then used for all the numerical simulations. A quadratic fit for both characteristics has been obtained which is applicable to any supersonic jet. The correlations developed are valid within the respective ranges of the parameters stated above.

scholarly journals Jet characteristics of CO2–O2 mixed injection using a dual-parameter oxygen lance nozzle for different smelting periods

2021 ◽  
Vol 40 (1) ◽  
pp. 345-360
Author(s):  
Chao Feng ◽  
Rong Zhu ◽  
Guangsheng Wei ◽  
Jianfeng Dong ◽  
Kai Dong
Keyword(s):  
Ambient Temperature ◽  
Simulation Software ◽  
Fluid Simulation ◽  
Smelting Process ◽  
Gas Composition ◽  
Oxygen Lance ◽  
Ansys Fluent ◽  
Impact Area ◽  
Jet Characteristics ◽  
The Impact

Abstract The jet performance of an oxygen lance nozzle influences the smelting rhythm, smelting index, and energy consumption of a converter. Due to the complexity of the process of converter smelting, the changing temperature and gas composition in the converter significantly impact the jet characteristics of the oxygen lance nozzle in the smelting process; however, research on the change law of jet characteristics in different smelting periods is limited. In this study, we used Ansys Fluent 17.0, which is commercially available fluid simulation software, to simulate the variation of jet characteristics of a mixed injection comprising 6% CO2 and 94% O2; the mixed injection was tested using a dual-parameter oxygen lance nozzle in the early, middle, and late stages of smelting. The results show that the increase of CO concentration and ambient temperature in the converter lead to a decrease in the attenuation rate of jet velocity, improved independence of multiple jets, and an increase in the impact area of jets on the molten pool. Thus, when designing and employing oxygen lance nozzles, the influence of ambient temperature and furnace gas composition on jet characteristics must be considered.

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