基于FLUENT的割嘴外部流场火焰燃烧的数值模拟

郝明; 王兴国; 李腾

doi:10.7512/j.issn.1001-2303.2022.01.14

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基于FLUENT的割嘴外部流场火焰燃烧的数值模拟
Numerical Simulation of Flame Combustion at Cutting Nozzle External Flow Field Based on FLUENT
2022年52卷第1期页码：109-114
DOI： 10.7512/j.issn.1001-2303.2022.01.14

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郝明，王兴国，李腾.基于FLUENT的割嘴外部流场火焰燃烧的数值模拟［J］.电焊机，2022，52（01）：109-114.

HAO Ming, WANG Xingguo, LI Teng.Numerical simulation of flame combustion at cutting nozzle external flow field[J].Electric Welding Machine, 2022, 52(01): 109-114.
郝明，王兴国，李腾.基于FLUENT的割嘴外部流场火焰燃烧的数值模拟［J］.电焊机，2022，52（01）：109-114. DOI： 10.7512/j.issn.1001-2303.2022.01.14.

HAO Ming, WANG Xingguo, LI Teng.Numerical simulation of flame combustion at cutting nozzle external flow field[J].Electric Welding Machine, 2022, 52(01): 109-114. DOI： 10.7512/j.issn.1001-2303.2022.01.14.

摘要

利用FLUENT软件对割嘴外部流场的喷雾燃烧过程进行了数值仿真模拟。湍流模型采用标准,k,－,ε,模型，燃烧模型采用涡耗散（ED）模型，燃油液滴通过离散相模型来描述，尝试利用ED模型探索割嘴外部流场火焰燃烧的可能性，通过模拟得到了合理的温度场、速度场和浓度场，以及火焰燃烧的各种细节。同时，通过对燃料与氧气不同混合比进行对比，发现60%燃料+40%氧气和55%燃料+45%氧气所能达到的最高温度几乎相同，约为2 760 k，进而为提高火焰的燃烧效率提供了理论依据。

Abstract

In this paper, spray combustion process was simulated numerically at cutting nozzle external flow field by the FLUENT software. Turbulence model was standard model, combustion model was eddy dissipation model, fuel droplet was described by discrete phase model, this article attempts to use the ED model to explore the possibility of flame burning in the flow field outside the cutting nozzle, through simulation, temperature field, velocity field, concentration field and various details of flame combustion reasonable were obtained. At the same time, by comparing the different mixing ratios of fuel and oxygen, it is found that the maximum temperature that 60% fuel and 40% oxygen and 55% fuel and 45% oxygen can reach is almost the same, which is about 2 760 k, and then provide theoretical basis for improve the flame combustion efficiency.

关键词

割嘴火焰燃烧FLUENT涡耗散

Keywords

cutting nozzleflame combustionFLUENTED

references

Katsuki Masashi， Chung Jin-Do， Kim Jang-Woo， et al. Development of rapid mixing fuel nozzle for premixed combustion［J］. Journal of Mechanical Science and Technology， 2009（23）：614 -623.

T Mahumud，S K Sangha. Prediction of a Turbulent Non-Premixed Natural Gas Flame in a Semi-Industrial Scale Furance using a Radiative Flamelet Combustion Model［J］. Flow Turbulence Combustion， 2010（84）：1-23.

A.KLIPFEL，M.FOUNTI. Numerical Simulation and Experimental Validation of the Turbulent Combustion and Perlite Expansion Processes in an Industrial Perlite Expansion Furnace［J］. Flow， Turbulence and Combustion， 1998（60）：283-300.

Victor P.Zhukov. The impact of methane oxidation kinetics on a rocket nozzle flow［J］. Acta Astronautica， 2019（161）：524-530.

Miroslaw Kowalski. NUMERICAL MODELLING OF COMBUSTION PROCESS WITH THE USE OF ANSYS FLUENT CODE［J］. Journal of KONES Powertrain and Transport， 2018（25）：175-186.

周力行. 湍流两相流动与燃烧的数值模拟［M］. 北京：清华大学出版社，1991：8.

ZHOU L X. Numerical simulation of turbulent two-phase flow and combustion［M］. Beijing： Tsinghua University Press，1991：8.

Angelo Minotti， Enrico Sciubba. LES of a Meso Combustion Chamber with a Detailed Chemistry Model： Comparison between the Flamelet and EDC model［J］. Energies， 2010（3）：1943-1959.

D CHENG， Q XU，G TRAPAGA， et al. The Effect of Particle Size and Morphology on the In-Flight Behavior of Particles during High-Velocity Oxyfuel Thermal Spraying［J］. Metallurgical and Materials Transactions B， 2001，32B（3）：525-535.

T B GRADINGER，K BOULOUCHOS. Modeling Turbulent Droplet Motion in Vaporizing Sprays［J］. Flow， Turbulence and Combustion， 2000（65）：1-29.

A Cuoci， A Frassoldati， T Faravelli， et al. CFD simulation of aturbulent oxy-fuel flame［J］. Processes and Tec-hnologies for a Sustainable Energy， 2010（6）：27-30.

斛晓飞，李志勇，李叶，等. C3H8+H2混合气体超音速火焰喷涂燃烧过程数值模拟［J］.电焊机，2019，49（10）：44-49.

HU X F， LI Z Y， LI Y， et al. Numerical simulation of combustion process of C3H8 + H2 mixed gas supersonic flame spraying［J］. Electric Welding Machine： 2019，49（10）：44-49.

郝明，胡传顺，蒋应田.基于FLUENT的氧乙醇汽油割嘴内部流场分析［J］.热加工工艺，2012， 41（17）：201-203，213.

HAO M， HU C S， JIANG Y T. Analysis of internal flow field of oxyethanol gasoline nozzle based on fluent［J］. Hot working process， 2012， 41（17）：201-203，213.

王福军. 计算流体动力学分析—CFD软件原理与应用［M］. 北京：清华大学出版社，2004.

WANG Fujun. Computational fluid dynamics analysis-principle and application of CFD software［M］. Beijing： Tsinghua University Press， 2004.

HJERTAGER L K， HJERTAGER B H， SOLBERG T. CFD modeling of fast chemical reactions in turbulent liquid flows［J］. Comput. and Chem. Eng.， 2002，26（4-5）：507-515.

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