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Simulation study for injection of two-phase fuel mixture into a cylindrical afterburner with asymmetric air inlet
Thermophysics and Aeromechanics ( IF 0.5 ) Pub Date : 2021-03-05 , DOI: 10.1134/s0869864320060013
A. V. Voronetskii , K. Yu. Aref’ev , M. A. Abramov

A method is developed for secondary data processing of the results of simulation of two-phase flow in an afterburner with a complex geometry. This method offers a prediction for mixing process efficiency (quality estimate) and combustion efficiency in an afterburner of a power plant. The opportunities of this method were demonstrated at the example of simulation of mixing the two-phase fuel with air in the afterburner of a model power plant with gas generation outlay. The paper presents a mathematical model for studied processes and the simulation results. The fuel was the gasification products (GP) of a high-energy composition (a mixture of gaseous and condensed phases). An algorithm was applied for processing the mathematical simulation results: the output is the evaluation of mixing between GP condensed phase and air flow. The parametric study offers the dependencies for size distributions of GP particles in the afterburner cross sections. The limiting values for GP combustion efficiency in the afterburner were evaluated from analysis of GP flow (gas and condensed phases) mixing with air flow. Simulation gives the data on the influence of injection configuration and GP condensed phase dispersion profile on the mixing efficiency in the afterburner. The results of study can be useful in recommendations for gaining on the cycle efficiency in novel propulsion plants.



中文翻译:

进气不对称的圆筒形加力燃烧器内喷射两相混合气的模拟研究

开发了一种用于复杂几何形状的加力燃烧器中两相流模拟结果的二次数据处理方法。该方法为发电厂的加力燃烧器提供了混合过程效率(质量估计)和燃烧效率的预测。在模拟发电厂的加力燃烧器中将两相燃料与空气混合的模拟示例中证明了该方法的机会,并且产生了气体费用。本文提出了用于研究过程和仿真结果的数学模型。燃料是高能成分(气态和冷凝态的混合物)的气化产物(GP)。应用了一种算法来处理数学模拟结果:输出是GP冷凝相和空气流之间混合的评估。参数研究为加力燃烧器横截面中GP颗粒的尺寸分布提供了依赖性。通过对GP流量(气相和冷凝相)与空气混合的分析来评估加力燃烧器中GP燃烧效率的极限值。仿真给出了有关喷射配置和GP冷凝相分散曲线对加力燃烧器混合效率的影响的数据。研究结果可能有助于获得有关新型推进装置的循环效率的建议。仿真给出了有关喷射配置和GP冷凝相分散曲线对加力燃烧器混合效率的影响的数据。研究结果可能有助于获得有关新型推进装置的循环效率的建议。仿真给出了有关喷射配置和GP冷凝相分散曲线对加力燃烧器混合效率的影响的数据。研究结果可能有助于获得有关新型推进装置的循环效率的建议。

更新日期:2021-03-05
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