干旱区生态环境知识资源中心(Arid): AEROELASTIC-STRUCTURAL COUPLING IN ANTENNA PROTOTYPE FOR WINDY OPEN-SPACE

Arid

	AEROELASTIC-STRUCTURAL COUPLING IN ANTENNA PROTOTYPE FOR WINDY OPEN-SPACE
	Iuso, G.; Virone, G.; Cafiero, G.; Bonisoli, E.; Lisitano, D.; Venturini, S.
通讯作者	Iuso, G (corresponding author), Politecn Torino, Dept Mech & Aerosp Engn, Corso Duca Abruzzi 24, I-10129 Turin, Italy.
会议名称	8th International Conference on Computational Methods for Coupled Problems in Science and Engineering (COUPLED)
会议日期	JUN 03-05, 2019
会议地点	Sitges, SPAIN
英文摘要	The interaction between wind and an antenna prototype for the low-frequency radio telescope of the Square Kilometer Array (SKA) is experimentally tested in the wind tunnel of the Politecnico di Torino. The tests aim to predict the antenna behaviour during working conditions, i.e. mounted by means of five contact points to a metal grid on sandy ground in the Australian desert. The wind tunnel is characterised by a circular test section having a diameter equal to 3 m and a length equal to 5 m. The height and the distance between the lateral legs of the antenna are equal respectively to 2.2 m and 1.5 m. The tests were performed at increasing wind speed up to 110 km/h. The system under analysis is an aluminium antenna composed by four parts arranged in axial symmetry and each one made of fifteen rods and small plates/wire elements. A numerical parametric model of the system is developed to numerically study the dynamic behaviour of the antenna in the frequency range of interest. The model is able to handle very high modal density and closed spaced modes in multiplicity of four because of the symmetric structure as well as the different shapes of the elements forming the antenna. The wind tunnel results emphasise the fluid-structure coupling of aerodynamics modes and the critical aspects of the boundary conditions for a good prediction of the oscillations amplitudes.
英文关键词	Wind tunnel Experimental fluid-structure interaction Coincident eigenvalues High-density modal content
来源出版物	VIII INTERNATIONAL CONFERENCE ON COMPUTATIONAL METHODS FOR COUPLED PROBLEMS IN SCIENCE AND ENGINEERING (COUPLED PROBLEMS 2019)
出版年	2019
页码	481-492
ISBN	978-84-949194-5-9
出版者	INT CENTER NUMERICAL METHODS ENGINEERING
类型	Proceedings Paper
语种	英语
收录类别	CPCI-S
WOS记录号	WOS:000651802400045
WOS类目	Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications
WOS研究方向	Engineering ; Mathematics
资源类型	会议论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/370273
作者单位	[Iuso, G.; Cafiero, G.; Bonisoli, E.; Lisitano, D.; Venturini, S.] Politecn Torino, Dept Mech & Aerosp Engn, Corso Duca Abruzzi 24, I-10129 Turin, Italy; [Virone, G.] CNR, Ist Elettron Ingn Informaz & Telecomunicaz, Corso Duca Abruzzi 24, I-10129 Turin, Italy
推荐引用方式 GB/T 7714	Iuso, G.,Virone, G.,Cafiero, G.,et al. AEROELASTIC-STRUCTURAL COUPLING IN ANTENNA PROTOTYPE FOR WINDY OPEN-SPACE[C]:INT CENTER NUMERICAL METHODS ENGINEERING,2019:481-492.