| 气体压缩性对流量系数的影响 |
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| 引用本文： | 胡文成,张宝华,沈忱,王冬冬,窦义涛,绍志强.气体压缩性对流量系数的影响[J].航空动力学报,2021,36(4):776-782. |
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| 作者姓名： | 胡文成 张宝华 沈忱 王冬冬 窦义涛 绍志强 |
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| 作者单位： | 中国航空发动机集团有限公司沈阳发动机研究所,沈阳110015;西北工业大学能源与动力学院,西安710072;中国航空发动机集团有限公司沈阳发动机研究所,沈阳110015 |
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| 摘 要： | 通过理论和实验研究了气体压缩性对有效流通面积的影响。运用回归分析的方法对实验数据拟合,对比研究不同理论模型与实验数据的吻合程度。研究发现:供气压比小于1.081时,气体的压缩性影响较小。供气压比大于1.081时可压缩气体理论模型拟合曲线与实验数据吻合,不同供气压比状态的有效流通面积比较稳定。而不可压缩气体理论模型拟合曲线与实验数据偏离,不同供气压比状态下有效流通面积相差较大。
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| 关 键 词： | 气体压缩性 回归分析 流量系数 有效面积 压比 |
| 收稿时间： | 2020/7/15 0:00:00 |
Effect of gas compressibility on flow coefficient |
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| HU Wencheng,ZHANG Baohu,SHEN Chen,WANG Dongdong,DOU Yitao,SHAO Zhiqiang.Effect of gas compressibility on flow coefficient[J].Journal of Aerospace Power,2021,36(4):776-782. |
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| Authors: | HU Wencheng ZHANG Baohu SHEN Chen WANG Dongdong DOU Yitao SHAO Zhiqiang |
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| Institution: | 1.Shenyang Engine Research Institute,Aero Engine Corporation of China,Shengyang 110015,China2.School of Power and Energy,Northwestern Polytechnical University,Xi’an 710072,China |
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| Abstract: | The effect of gas compressibility on the effective flow area was studied by theory and experiment. The regression analysis method was used to fit the experimental data, and compared the degree of the coincidence between different theoretical models and experimental data. Results showed that the pressure of gas compressibility can be neglected when the gas pressure ratio was less than 1.081. When the pressure ratio was greater than 1.081, the fitting curve of the compressible gas theory model was consistent with the experimental data, and the value of effective flow area was stable at different pressure ratios. Fitting curves of the incompressible flow theory model deviated from the experimental data. The value of the effective flow area changed with different pressure ratios. |
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| Keywords: | gas compressibility regression analysis flow coefficient effective area pressure ratio |
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