充气式浮桥的流固耦合动力学建模理论与并行计算方法

In the last more than 10 years, the gasbag-type floating bridge (GTFB) is a novel kind of international emerged floating bridge structure, which could be widely used in the national defense and disaster relief. Our country is developing the first generation of the GTFB, and the guidance of design theory and method is urgently needed. Focused on the universal and urgent scientific problem in the dynamic fluid-structure interaction (FSI) of the GTFB, the numerical modeling theory and the asynchronous parallel computation method for the dynamic FSI of the GTFB is studied according to the structural characteristics and application environment of gasbag-type floating bridge in this project. Based on the modeling theory and computation method, the numerical simulation analysis of the GTFB under various conditions is carried out, and the correctness of the numerical simulation results is verified by physical experiments. The modeling theory, computation method and numerical simulation results are applied to develop a series of new products of the military landing floating bridge and the civil emergency floating bridge. The purpose of this project is twofold: to propose the creative numerical modeling theory and the innovative asynchronous parallel computation method for the dynamic FSI of the GTFB; to solve the two technical problems that are the highly nonlinear interactions and the high computational effort in the dynamic FSI of the GTFB. In the end, firm foundation will be provided to establish the systematic theory and method for the GTFB design. Theoretical basis will be provided to develop new product of the GTFB. Technical support will be provided to spread the scope of the GTFB application in military and civil fields.

充气式浮桥是最近十多年来国际上出现的一种新型浮桥结构，可广泛应用于国防战备和抢险救灾。我国正在研制充气式浮桥的第一代产品，迫切需要设计理论和方法的指导。本项目针对充气式浮桥的结构特点和使用环境，聚焦充气式浮桥流固耦合动力学这个具有普遍性和急需解决的科学问题，开展充气式浮桥的流固耦合动力学建模理论和异步长并行计算方法研究。在此基础上对充气式浮桥进行多工况数值仿真分析，并通过物理试验验证数值仿真结果的正确性。将建模理论、计算方法和数值仿真结果应用于军用登陆浮桥和民用应急浮桥的系列新产品开发。本项目的研究目标是：提出创新性的充气式浮桥流固耦合动力学建模理论和异步长并行计算方法，解决充气式浮桥流固耦合动力学问题中强非线性和海量计算这两大技术难题，为建立系统性的充气式浮桥设计理论与方法提供坚实基础，为充气式浮桥的新产品研制提供理论依据，为推广充气式浮桥在军事和民用领域的广泛应用提供技术支撑。

最近十多年来，国际上出现了一种新型舟桥结构--充气式浮桥，其优点在于：运输方便，架设快捷，使用可靠，可广泛应用于国防战备和抢险救灾。我国也正在研制充气式浮桥的第一代产品，研制过程迫切需要设计理论和方法的指导。本项目针对充气式浮桥的结构特点和使用环境，聚焦充气式浮桥流固耦合动力学这个具有普遍性和急需解决的科学问题，开展了充气式浮桥的流固耦合动力学建模理论、异步长并行计算方法研究和充气式浮桥的多工况数值仿真分析，并将建模理论、计算方法和数值仿真结果指导军用登陆浮桥和民用应急浮桥的系列新产品开发。本项目的主要究成果是：提出了创新性的充气式浮桥流固耦合动力学建模理论和异步长并行计算方法，解决了充气式浮桥流固耦合动力学问题中强非线性和海量计算这两大技术难题，为建立系统性的充气式浮桥设计理论与方法提供了坚实基础，为充气式浮桥的新产品研制提供了理论依据，为推广充气式浮桥在军事和民用领域的广泛应用提供了技术支撑。