Study of Buildings and Long-Span Bridges under Wind Loads, Award in U.S. and Indian Currencies

技术说明：该提案支持约翰霍普金斯大学的Robert Scanlan博士和印度鲁尔基大学的Prem Krishna博士在风力工程方面的合作研究。实验将在霍普金斯大学的corsin层流风洞和鲁尔基的新边界层风洞进行。对桥面截面模型和建筑模型在各自风洞中的具体使用和解释进行研究。霍普金斯大学积累的关于利用颤振导数来确定风稳定性的理论，将与鲁尔基和霍普金斯大学的截面模型相比较。与获得颤振导数的各种实验一起，将应用新的技术来解释即将到来的数据。该研究将解决确定甲板模型所需的详细几何形式以增强稳定性的问题。范围：该基金支持主要研究人员在彼此的业务基地进行交流和在鲁尔基进行实验工作的旅费。拟议的合作预计将继续发展颤振衍生概念，这被认为是风力工程的重大进步，将美国大跨度桥梁空气动力学设计方法的影响扩展到国外，并提高两国的能力。在印度，这项研究将导致发展建模专业知识，改进设计和施工技术，技术教育和尽量减少风暴造成的巨大损害。

Technical Narrative: This proposal supports collaborative research in wind engineering between Dr. Robert Scanlan of Johns Hopkins University and Dr. Prem Krishna of the University of Roorkee, India. Experiments will be conducted at the Corrsin laminar flow wind tunnel at Hopkins and at the new boundary layer tunnel at Roorkee. Research will be carried out on the specific use and interpretation of bridge deck section models and building models in the respective wind tunnels. A backlog of theory developed at Hopkins on the use of flutter derivatives in determining wind stability will be used relative to section models at Roorkee and Hopkins. Together with various experiments for obtaining flutter derivatives, new techniques for interpreting the forthcoming data will be applied. The research will address determining the detailed geometric forms needed in deck models to enhance stability. Scope: This supports funding for travel of the principal investigators for exchanges at each other's base of operations and for experimental work at Roorkee. The proposed collaboration is expected to continue the development of the flutter derivatives concept which is considered a major advance in wind engineering, to extend abroad the influence of U.S. methods of long-span bridge aerodynamic design, and to lead to enhanced capabilities in both countries. In India, this research will lead to developing modelling expertise, to the improvement of design and construction techniques, technical education and to minimization of the enormous damage caused by wind storms.