气动台翼型测压实验及其数值仿真应用
|
摘要
以小型立式低速气动综合实验台为教学平台,以NACA64A-005翼型为开放实验对象,开展表面测压模型设计与制作实践,翼型弦长200 mm。在攻角±20o变化范围内,进行模型表面气流压强分布测量,实验段进口气流特征雷诺数2.0×10~5。应用FLUENT分析软件,数值仿真模型实验空间定常时均湍流流场和气动力随攻角变化特性。通过模型的制作与实验并结合数值仿真使学生更加牢固地掌握气动基础有关实验原理和概念,进一步训练和增强综合实践和创新能力。
Taking the small vertical and low speed aerodynamic experiment platform as the teaching platform and taking the NACA64 A-005 airfoil as the open experiment object, the design and production practice of the surface pressure measurement model are carried out, and the string length of the airfoil is 200 mm. The airflow pressure distribution on the model surface was measured within the range of attack angle of ±20°. The characteristic Reynolds number of the inlet air was 2×105. FLUENT software is used to simulate the steady and uniform turbulent flow field and aerodynamic force variation with theattack angle. Through the combination of model making,experiment and numerical simulation, the students can grasp the principles and concepts of aerodynamic experiments more firmly, further train and enhance the creative ability of practice.
Taking the small vertical and low speed aerodynamic experiment platform as the teaching platform and taking the NACA64 A-005 airfoil as the open experiment object, the design and production practice of the surface pressure measurement model are carried out, and the string length of the airfoil is 200 mm. The airflow pressure distribution on the model surface was measured within the range of attack angle of ±20°. The characteristic Reynolds number of the inlet air was 2×105. FLUENT software is used to simulate the steady and uniform turbulent flow field and aerodynamic force variation with theattack angle. Through the combination of model making,experiment and numerical simulation, the students can grasp the principles and concepts of aerodynamic experiments more firmly, further train and enhance the creative ability of practice.
引文
[1]莫乃榕.工程力学实验(工程流体力学实验)[M].武汉:华中科技大学出版社,2008.
[2]戎瑞,吴正人,张磊,等.“流体力学及泵与风机”创新性实验研究[J].实验室科学,2017,20(1):10-12.
[3]赵红晓.伯努利方程精品实验建设[J].实验技术与管理,2015,32(2):182-184.
[4]刘邓辉,张志宏,顾建农.面向应用创新型人才培养的流体力学实验教学改革[J].实验室科学,2013,16(5):72-74,78.
[5]孙建国,崔俊华,江善元.低速翼型升阻特性实验台的设计与分析[J].海军航空工程学院学报,2010,25(4):475-480.
[6]侯志勇,石磊,聂万胜.对称翼型低速绕流流场特性的数值分析研究[J].科学技术与工程,2009,9(18):5610-5613.
[7]李国威,董金玲.CFD技术在无环量圆柱绕流多媒体教学中的应用研究[J].中国现代教育装备,2011(7):64-67.
[8]曲浩,胡骏.雷诺数对风力机二维翼型气动性能的影响[C].中国航空学会2010年第七届动力年会论文摘要汇编,2010:43.
[9]纪兵兵,陈金瓶.ANSYS ICEM CFD网格划分技术实例详解[M].北京:中国水利水电出版社,2012.
[10]韩占忠.FLUENT-流体工程仿真计算实例与分析[M].北京:北京理工大学出版社,2009.
[2]戎瑞,吴正人,张磊,等.“流体力学及泵与风机”创新性实验研究[J].实验室科学,2017,20(1):10-12.
[3]赵红晓.伯努利方程精品实验建设[J].实验技术与管理,2015,32(2):182-184.
[4]刘邓辉,张志宏,顾建农.面向应用创新型人才培养的流体力学实验教学改革[J].实验室科学,2013,16(5):72-74,78.
[5]孙建国,崔俊华,江善元.低速翼型升阻特性实验台的设计与分析[J].海军航空工程学院学报,2010,25(4):475-480.
[6]侯志勇,石磊,聂万胜.对称翼型低速绕流流场特性的数值分析研究[J].科学技术与工程,2009,9(18):5610-5613.
[7]李国威,董金玲.CFD技术在无环量圆柱绕流多媒体教学中的应用研究[J].中国现代教育装备,2011(7):64-67.
[8]曲浩,胡骏.雷诺数对风力机二维翼型气动性能的影响[C].中国航空学会2010年第七届动力年会论文摘要汇编,2010:43.
[9]纪兵兵,陈金瓶.ANSYS ICEM CFD网格划分技术实例详解[M].北京:中国水利水电出版社,2012.
[10]韩占忠.FLUENT-流体工程仿真计算实例与分析[M].北京:北京理工大学出版社,2009.