Numerical calculation of shock wave overpressure produced by multiple cloud detonation

IF 1.5 4区工程技术 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Engineering Computations Pub Date : 2024-01-25 DOI:10.1108/ec-05-2023-0244

Zeye Fu, Jiahao Zou, Luxin Han, Qi Zhang

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引用次数: 0

Abstract

Purpose

A model for calculating the global overpressure time history of a single cloud detonation from overpressure time history of discrete positions in the range of single cloud detonation is to be proposed and verified. The overpressure distribution produced by multiple cloud detonation and the influence of cloud spacing and fuel mass of every cloud on the overpressure distribution are to be studied.

Design/methodology/approach

A calculation method is used to obtain the global overpressure field distribution after single cloud detonation from the overpressure time history of discrete distance to detonation center after single cloud detonation. On this basis, the overpressure distribution produced by multi-cloud under different cloud spacing and different fuel mass conditions is obtained.

Findings

The results show that for 150 kg fuel, when the spacing of three clouds is 40 m, 50 m, respectively, the overpressure range of larger than 0.1 MPa is 5496.48 mˆ2 and 6235.2 mˆ2, which is 2.89 times and 3.28 times of that of single cloud detonation. The superposition effect can be ignored when the spacing between the three clouds is greater than 60 m. In the case of fixed cloud spacing, once the overpressure forms continuous effective superposition, the marginal utility of fuel decreases.

Originality/value

A model for calculating the global overpressure time history of a single cloud detonation from overpressure time history of discrete positions in the range of single cloud detonation is proposed and verified. Based on this method, the global overpressure field of single cloud detonation is reconstructed, and the superimposed overpressure distribution characteristics of three cloud detonation are calculated and analyzed.

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多云引爆产生的冲击波超压的数值计算

目的提出并验证根据单云起爆范围内离散位置的过压时间历史计算单云起爆全局过压时间历史的模型。研究多云起爆产生的超压分布，以及云间距和各云燃料质量对超压分布的影响。设计/方法/途径采用计算方法，从单云起爆后到起爆中心离散距离的超压时间历史记录中获得单云起爆后的全局超压场分布。结果表明，对于 150 kg 燃料，当三云间距分别为 40 m、50 m 时，大于 0.1 MPa 的超压范围分别为 5496.48 mˆ2 和 6235.2 mˆ2，是单云起爆的 2.89 倍和 3.28 倍。在云间距固定的情况下，一旦超压形成连续的有效叠加，燃料的边际效用就会下降。原创性/价值提出并验证了一种根据单云起爆范围内离散位置的超压时间历史计算单云起爆全局超压时间历史的模型。基于该方法，重建了单云起爆的全局超压场，并计算分析了三云起爆的叠加超压分布特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Computations 工程技术-工程：综合

CiteScore

3.40

自引率

6.20%

发文量

审稿时长

5 months

期刊介绍： The journal presents its readers with broad coverage across all branches of engineering and science of the latest development and application of new solution algorithms, innovative numerical methods and/or solution techniques directed at the utilization of computational methods in engineering analysis, engineering design and practice. For more information visit: http://www.emeraldgrouppublishing.com/ec.htm