| 管道内流动力学修正耗散模型 |
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| 引用本文： | 徐彬彬,王学,巫朝君,曾维平,颜来,兰宇,朱任宇.管道内流动力学修正耗散模型[J].航空动力学报,2021,36(1):78-87. |
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| 作者姓名： | 徐彬彬 王学 巫朝君 曾维平 颜来 兰宇 朱任宇 |
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| 作者单位： | Low Speed Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China |
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| 基金项目： | 中国空气动力研究与发展中心风雷青年创新基金(PJD20190236) |
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| 摘 要： | 基于二维流体动力学方程组,根据管道内流动力学相关特性以及管道输入端流场边界条件,提出了修正耗散模型。相对于耗散模型,修正耗散模型考虑了管道输入端流场的影响,能够更精确地描述风洞试验中管道效应对动态压力测量的影响。FL-14风洞动态压力试验也表明:管道间接测量的动态压力结果经过修正耗散模型进行修正后,能够大幅度减少管道效应所带来的误差。在一定试验条件下,耗散模型修正结果的相对误差高达534%,而修正耗散模型修正结果的相对误差只有66%。
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| 关 键 词： | 风洞试验 流体动力学 动态压力 管道效应 修正耗散模型 |
| 收稿时间： | 2020/4/3 0:00:00 |
Improved dissipative model of hydrodynamic in tube |
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| XU Binbin,WANG Xue,WU Chaojun,ZENG Weiping,YAN Lai,LAN Yu,ZHU Renyu.Improved dissipative model of hydrodynamic in tube[J].Journal of Aerospace Power,2021,36(1):78-87. |
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| Authors: | XU Binbin WANG Xue WU Chaojun ZENG Weiping YAN Lai LAN Yu ZHU Renyu |
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| Institution: | Low Speed Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China |
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| Abstract: | Based on the two-dimensional hydrodynamics equations and the real flow boundary condition at the inlet of tube, an improved dissipative model was proposed. Compared with the dissipative model, the improved one taking the speed of flow field into account can describe the effect of tube on measuring dynamic pressure more accurately in wind tunnel test. The experiments in FL-14 wind tunnel also indicated that the improved dissipative model can dramatically reduce the measuring error compared with the dissipative model. The relative error of 534% resulting from the correction via dissipative model decreased to 66% via the improved dissipative model at certain experimental conditions. |
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| Keywords: | wind tunnel test hydrodynamics fluctuation pressure effect of tube improved dissipative model |
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