网格环境下的航空发动机集成设计与分布仿真研究

A System for Integrated Design and Distributed Simulation of Aircraft Engine in a Computational Grid Environment

建立了一个开发航空发动机分布仿真的系统环境.该环境中子模型具有自治性,子模型的设计者可以根据自己的需要选择所使用的工具,定义变量以及他们与其他设计者之间的关系.应用新兴的网格技术建立了一个集成设计和分布仿真的环境框架,它可以灵活地建立和修改基于部件对象模型建立起来的航空发动机模型,并尝试解决仿真中存在的多学科耦合以及大计算量的问题.该框架具有图形化界面,可以方便地更改发动机的参数和结构,其所具有网格技术的易扩展性也为今后建立更复杂的发动机模型提供了良好的平台.研究人员可以应用该系统提供的可扩展设计和仿真环境,灵活地组建新的航空发动机模型并进行仿真.

In this paper, we introduce the grid technology for distributed simulation by a sample of a developed system for distributed simulation and integrated design to aircraft engine. It provides a flexible environment for defining, modifying and simulating the component-based aero gas turbine models, and enables users to customize and extend the framework in augmenting new functionality or adapting simulation behavior as required. In this system, model components may be distributed across heterogeneous computing architectures and operating systems where object oriented modeling and component pre-construction are employed. Both simulation entity models and network reside in model library. We use GLOBUS3.0 and VEGA grid tools infrastructure as the framework for this system. In addition, the proposed environment is partially independent of aero engine simulation implementation and may be easily incorporated into other simulation implementation. At last a distributed gas turbine engine model is developed and simulated to illustrate the use of the frameworks.