等离子体强化混合燃气燃烧研究

Study on the Plasma Enhancing Combustion of Mixed Gas

为验证等离子体对固冲发动机中气相组分燃烧的强化特性, 通过建立等离子体助燃理论模型, 对有无等离子体条件下的混合燃气在固冲补燃室中的燃烧过程进行了数值和实验研究.研究结果表明： 在燃烧室中加入等离子体后, 有效促进了混合燃气的链式反应, 缩短了燃烧时间; 等离子体显著提高了混合燃气的燃烧效率, 燃烧效率增加了16.6%.与实验结果对比可知, 数值计算结果误差在10%以内, 说明所建立的理论模型较为准确地模拟了混合燃气燃烧过程, 具有一定的可靠性.

In order to verify the enhancement characteristics of plasma in gas-phase combustion of the solid ramjet rocket, Numerical and experimental studies were carried out by establishing a theoretical model of plasma-assisted combustion. The result indicated that： the addition of plasma in the combustion chamber effectively promoted the chain reaction of the mixed gas and shortens the burning time; the plasma significantly increased the combustion effi.ciency of the mixed gas, and the combustion efficiency increased by 16.6%.Compared with the experimental results,the error of numerical calculation was less than 10% which indicated that the theoretical model was relative accurate.ly simulate the combustion process of mixed gas and has a certain reliability.