Domain ontology driven composable simulation framework

The simulation composability is one of important development directions in simulation domain. The key issue is the semantic composability. Currently there is no feasible approach to realize the effective semantic representation and composition of simulation components. Based on domain knowledge and Web Ontology Language (OWL), this paper proposes a composable simulation framework, which includes conceptual model semantics, model components semantics, model framework semantics, and simulation scenario semantics. Additionally, all the semantics are utilized in the model components development process, the simulation system development process, and the simulation system execution process respectively. The consistency checking among those semantics is also proposed. The detailed mapping processes between different semantic models can help to build the domain ontology driven composable simulation system.     

基于思维导图的仿真实验方法研究

经典实验设计方法可处理的实验因子有限,不能满足武器系统论证仿真实验因素多、实 验方案海量性的需要。提出通过思维导图引入专家领域知识进行仿真实验的辅助设计,并利用本 体论的方法分别对思维导图和仿真实验进行了形式化描述,建立了从思维导图到计算机仿真实验 方案的映射,实现了基于思维导图的仿真实验方案自动生成。最后结合陆军数字化部队作战效能 分析问题,利用思维导图进行了仿真实验方案的设计,研究证明采用思维导图引入专家领域知识可 有效降低武器系统仿真实验设计的复杂性。     

垂直向上流动通道内环状流干涸点的理论研究

本文基于分离流模型,建立了垂直向上流动环形通道内环状流的三流体模型,并对干涸点进行了数值模拟.比较计算结果和实验结果,发现两者符合较好.结果显示:当干涸点发生在内管并且外管热流密度不变时,临界含汽率随曲率和间隙的减小而增大,当干涸点发生在外管且内管热流密度不变时,情况相反;对于固定的间隙,当外管内径大于20 mm时,或间隙小于0.5 mm时,压力和质量流速对临界含汽率的影响非常微弱.