Purpose

This study aims to present a moving grid method based on the manipulation of connections.

Design/methodology/approach

In this study, the grid’s connections were manipulated to simulate a released store’s displacement. The selected model in this research is the EGLIN test case. In the introduced method, connections are modified in specific nodes of the grid. Governing flow equations were solved with the finite volume method. The major characteristic of this technique is using the averaging method for calculating the flux of cells.

Findings

This method maintains the grid’s quality even in large displacements of the released store. The three-dimensional simulation was carried out in transonic and supersonic regimes. Comparison of the results with experimental data were highly satisfactory.

Research limitations/implications

Using this moving grid method is recommended for simulating other models.

Practical implications

Prediction of store trajectory released from air vehicles is one of the most critical issues under study especially in the design of new stores.

Originality/value

The most prominent advantage of this method is maintaining the grid quality simultaneous with large displacements of the released store.

中文翻译：

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网格连接操纵下门店释放轨迹的数值研究

目的

本研究旨在提出一种基于连接操作的移动网格方法。

设计/方法/方法

在这项研究中，操纵网格的连接来模拟已发布商店的位移。本研究选择的模型是 EGLIN 测试用例。在引入的方法中，在网格的特定节点中修改连接。控制流动方程用有限体积法求解。该技术的主要特点是使用平均法计算细胞通量。

发现

即使在已发布商店的大位移中，该方法也能保持网格的质量。三维模拟是在跨音速和超音速状态下进行的。结果与实验数据的比较非常令人满意。

研究限制/影响

建议使用这种移动网格方法来模拟其他模型。

实际影响

预测从飞行器释放的商店轨迹是正在研究的最关键的问题之一，尤其是在新商店的设计中。

原创性/价值

这种方法最突出的优点是在释放存储的大位移的同时保持网格质量。