飞机外挂物离机过渡过程的有限元算法.

来源 :中国航空学报 | 被引量 : 0次 | 上传用户：gzhaohuo892

【摘要】

：

研究飞机外挂物在按给定轨迹下沉旋转的离机过渡过程中,流场非结构网格的调整和再生成方法以及过渡过程欧拉方程有限元数值解法.文中指出外挂物运动时流场网格调整或再生成仅

【作者】

：

杨岞生

【机构】

：

Department of Aerodynamics

【出处】

：

中国航空学报

【发表日期】

：

2004年期

【关键词】

：

外挂物过渡过程非结构网格有限元法 external stores transient process unstructured mesh finite e

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研究飞机外挂物在按给定轨迹下沉旋转的离机过渡过程中,流场非结构网格的调整和再生成方法以及过渡过程欧拉方程有限元数值解法.文中指出外挂物运动时流场网格调整或再生成仅需在围绕外挂物的一小区内进行以减少计算量,而且固定网格的欧拉方程的有限元数值解法也可适用于运动网格情况,只要将固定网格的守恒通量项Fk用运动网格的Ek来代替,并建立了Fk和Ek之间的关系.文末给出了带外挂物飞机的实例计算结果.

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飞机外挂物离机过渡过程的有限元算法.

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