1. Equivalent beam-net design theory of aero-elastic model about hyperbolic thin-shell cooling towers and its experimental investigation.
- Author
-
Zhao Lin, Ge Yao-Jun, and Cao Feng-Chan
- Subjects
COOLING towers ,VIBRATION (Mechanics) ,WIND tunnels ,FEASIBILITY studies ,SIMULATION methods & models ,STIFFNESS (Engineering) - Abstract
Hyperbolic thin-shell cooling towers have complicated vibration modes, and are very sensitive to the effects of group towers and wind-induced vibration. The aero-elastic models of cooling tower in wind tunnel tests are usually designed based on the method of stiffness simulation by continuous material structure. However, the method has some shortages in actual engineering application, so the so-called "equivalent beam-net design method" of aero-elastic model of cooling tower is proposed in this paper. Reduced-scale stiffness algorithm of cooling tower model is formulated firstly, and corresponding modification and simulation methods about aerodynamic effects of Reynolds and Strouhal number are also suggested. An aero-elastic model of 1 : 200 ratio of cooling tower was manufactured using beam-net method, then in Tongji university TJ-3 wind tunnel, dynamic response tests were carried Out. It can be confirmed that vibration modes and aerodynamic parameters, wind-vibration factors and testing feasibility meet the requirement of wind tunnel tests, the proposed method can avoid the short-ages of traditional method. [ABSTRACT FROM AUTHOR]
- Published
- 2008