水利水电科技进展2018，Vol.38Issue(3)：8-14,7.DOI:10.3880/j.issn.1006-7647.2018.03.002
开孔桥墩墩后水动力特性PIV试验
PIV Experimental study on hydrodynamic characteristics of flow past a hollow pier
摘要
Abstract
The Particle Image Velocimetry(PIV) technique is applied to explore the flow structures behind a hollow bridge pier. Hydrodynamic characteristics of the flow field past the pier with a rectangular hollow slot are examined in both horizontal and vertical planes. The result shows that the motion of the wake flow at the height of the slot can be changed. The development and movement of large-scale vortex is restrained and the upward motion trajectory of the bottom flow behind the pier is cut off by the strong shear effect that is generated due to the interaction between the high-speed flow pass through the hole and the low-speed flow in the lateral and back region of the pier. Characteristics of periodicity and high intermittency exist in the instantaneous flow field behind the pier.关键词
开孔桥墩/水动力特性/瞬时流场/粒子图像测试技术Key words
hollow bridge pier/hydrodynamic characteristic/instantaneous flow field/PIV分类
交通工程引用本文复制引用
邓斌,唐瑶,蒋昌波,赵兵兵,王刚..开孔桥墩墩后水动力特性PIV试验[J].水利水电科技进展,2018,38(3):8-14,7.基金项目
国家自然科学基金(51239001,51509023) （51239001,51509023）
湖南省教育厅资助科研项目(14C0024) （14C0024）
