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Cooling process of liquid propellant rocket by means of kerosene-alumina nanofluid

机译:煤油-氧化铝纳米流体对液体推进剂火箭的冷却过程

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Heat transfer augmentation of kerosene-alumina nanofluid is studied for the possible use in the regenerative cooling channel of semi cryogenic engine. The basic partial differential equations are reduced to ordinary differential equations which are solved using differential transformation method. Velocity and temperature profiles as well as the skin friction coefficient and Nusselt number are determined. The influence of pertinent parameters such as nanofluid volume fraction, viscosity parameter and Eckert number on the flow and heat transfer characteristics is discussed. The results indicate that adding alumina into the fuel of liquid rocket engine (kerosene) can be considered as the way of enhancing cooling process of chamber and nozzle walls. Nusselt number is an increasing function of viscosity parameter and nanoparticle volume fraction while it is a decreasing function of Eckert number.
机译:研究了煤油-氧化铝纳米流体的传热增强,以用于半低温发动机的再生冷却通道。基本的偏微分方程被简化为使用微分变换法求解的常微分方程。确定速度和温度曲线以及皮肤摩擦系数和努塞尔数。讨论了诸如纳米流体体积分数,粘度参数和埃克特数等相关参数对流动和传热特性的影响。结果表明,将氧化铝添加到液体火箭发动机(煤油)的燃料中可以被认为是增强腔室和喷嘴壁冷却过程的方法。努塞尔数是粘度参数和纳米颗粒体积分数的增加函数,而它是埃克特数的减少函数。

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