超燃发动机内壁摩阻测量传感器研究
发布时间:2018-01-01 01:10
本文关键词:超燃发动机内壁摩阻测量传感器研究 出处:《推进技术》2016年06期 论文类型:期刊论文
【摘要】:根据超燃发动机燃烧室的热环境参数进行传感器冷却换热及应变计算,研制了一种用于燃烧室高温环境直接测量摩阻的传感器,解决了传感器的高温隔热、冷却和灵敏度等问题,并进行了标定和校核。通过CARDC电弧加热器开展了初步的测试试验和数值模拟,结果表明,数值模拟和测试的摩阻相差达20%,雷诺比拟因子与文献中0.7~1.3符合较好。
[Abstract]:The sensor cooling heat and strain is calculated according to the thermal environment parameters of scramjet combustion chamber, a sensor for measuring friction combustion chamber temperature environment was developed to solve the high-temperature heat sensor, cooling and sensitivity, and the calibration and verification. The CARDC test was carried out and the arc heater. Numerical simulation, preliminary results show that the friction of numerical simulation and test is 20%, 0.7~1.3 factor and Reynolds analogy in the literature agree well.
【作者单位】: 中国空气动力研究与发展中心;
【分类号】:V235.21
【正文快照】: 1引言近年来,以超燃冲压发动机为动力的吸气式高超声速技术得到了快速的发展[1],减少发动机内阻成为关键技术之一。发动机内壁面受两种阻力:一是压力阻力,即沿与气流接触的表面进行压力积分,所得合力在来流方向的分量;二是表面摩擦阻力,由于气流粘性的存在,使得与气流相接触的,
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