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微型涡喷发动机燃烧室由于燃烧空间受限,导致微型燃烧室燃气驻留时间短、燃烧热损失大和燃烧效率低等问题。为了研究合适的微型燃烧室燃烧方案,实现在有限的驻留时间内完全燃烧,对某发动机微型环形燃烧室进行了数值模拟,采用标准k-ε模型、涡耗散模型和P-1辐射模型等数学模型对研究对象进行模拟,分析了该模型的一般燃烧和流动规律,并研究该模型在不同的增压比条件下的总压恢复系数、出口温度等燃烧特性,为微型环形燃烧室的结构设计研究提供依据。
Micro-turbojet engine combustion chamber due to limited combustion space, resulting in a small combustion chamber gas residence time is short, large heat loss and combustion of low combustion efficiency and other issues. In order to study the combustion scheme of a suitable micro-combustion chamber and achieve complete combustion in a limited residence time, a numerical simulation of a micro-annular combustion chamber of an engine was carried out. The standard k-ε model, the eddy dissipation model and the P-1 radiation model And other mathematical models to simulate the study object, the general combustion and flow laws of the model were analyzed, and the total pressure recovery coefficient and outlet temperature of the model under different supercharging ratio conditions were studied. Structural design to provide the basis for the study.