介绍了AEDC(Arnold Engineering Development Center)结冰缩比方法,并对其有效性问题,用数值仿真方法进行了验证.利用结冰仿真计算软件对NACA0012翼型及其1/2和1/3缩比模型、圆柱及其1/2缩比模型进行了结冰数值模拟,内容涉及流场、水滴...介绍了AEDC(Arnold Engineering Development Center)结冰缩比方法,并对其有效性问题,用数值仿真方法进行了验证.利用结冰仿真计算软件对NACA0012翼型及其1/2和1/3缩比模型、圆柱及其1/2缩比模型进行了结冰数值模拟,内容涉及流场、水滴撞击特性和冰生长计算等.缩比部件的结冰条件由AEDC方法确定.结果表明,翼型、圆柱与其缩比模型的结冰过程具有较好的相似性.说明AEDC方法科学合理,其确定的结冰缩比试验参数有效,同时也说明结冰模拟技术可用于结冰缩比相似性研究.展开更多
In this paper, we attempt to explore the potential applications of the theory similarity (TOS) in the development of distributed knowledge-based systems (KBS). Based on TOS, a functional design for reducing the inform...In this paper, we attempt to explore the potential applications of the theory similarity (TOS) in the development of distributed knowledge-based systems (KBS). Based on TOS, a functional design for reducing the information incompleteness in a distributed KBS is proposed. of which the dey idea is to remedy the incomplete information by means of analogic estimation. The measuring formulas and rules associated with three types of analogic relations are presented respectively.A framework for implementing the proposed design is given as well.展开更多
文摘介绍了AEDC(Arnold Engineering Development Center)结冰缩比方法,并对其有效性问题,用数值仿真方法进行了验证.利用结冰仿真计算软件对NACA0012翼型及其1/2和1/3缩比模型、圆柱及其1/2缩比模型进行了结冰数值模拟,内容涉及流场、水滴撞击特性和冰生长计算等.缩比部件的结冰条件由AEDC方法确定.结果表明,翼型、圆柱与其缩比模型的结冰过程具有较好的相似性.说明AEDC方法科学合理,其确定的结冰缩比试验参数有效,同时也说明结冰模拟技术可用于结冰缩比相似性研究.
文摘In this paper, we attempt to explore the potential applications of the theory similarity (TOS) in the development of distributed knowledge-based systems (KBS). Based on TOS, a functional design for reducing the information incompleteness in a distributed KBS is proposed. of which the dey idea is to remedy the incomplete information by means of analogic estimation. The measuring formulas and rules associated with three types of analogic relations are presented respectively.A framework for implementing the proposed design is given as well.
