Comparisons of Different Precision WENO Schemes for Simulating Blast Load of Gas Cloud Explosion inside a Cabin

XU Weizheng; WU Weiguo

doi:10.11858/gywlxb.20170689

Volume 32 Issue 4

Apr 2018

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Chinese Journal of High Pressure Physics > 2018 > 32(4): 042302.

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XU Weizheng, WU Weiguo. Comparisons of Different Precision WENO Schemes for Simulating Blast Load of Gas Cloud Explosion inside a Cabin[J]. Chinese Journal of High Pressure Physics, 2018, 32(4): 042302. doi: 10.11858/gywlxb.20170689

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Comparisons of Different Precision WENO Schemes for Simulating Blast Load of Gas Cloud Explosion inside a Cabin

doi: 10.11858/gywlxb.20170689

XU Weizheng^{1, 2
,},
WU Weiguo^{1, 2}

1.
Key Laboratory of High Performance Ship Technology of Ministry of Education, Wuhan University of Technology, Wuhan 430063, China
2.
Departments of Naval Architecture, Ocean and Structural Engineering, School of Transportation, Wuhan University of Technology, Wuhan 430063, China

Received Date: 07 Dec 2017
Rev Recd Date: 19 Dec 2017

Abstract

Abstract

In the present work, we developed a high-resolution 3D code based on the FORTRAN platform to investigate the influence of accuracy of WENO schemes on the blast load generated by gas cloud explosion inside a cabin.The 3th, 5th, 7th and 9th WENO finite difference schemes were implemented in the code to capture the shock waves.Several one dimensional Riemann problems such as Sod shock tube and shock-entropy wave interaction were simulated to investigate the computing performance of the schemes preliminarily and validate the developed code.Then, the validated code was used to conduct the simulation of the gas cloud explosion inside a closed cabin and a venting cabin and the influence of the accuracy of WENO schemes on the blast load was discussed as well.The researches indicate that the blast load generated by gas cloud explosion inside the cabin mainly contains multiple peaks shock waves and long duration quasi-static overpressure.The accuracy of WENO schemes has considerable influence on the blast waves and higher order scheme gives sharper pressure peaks, whereas it has much less influence on the quasi-static overpressure.
- WENO scheme,
- high precision,
- low dissipation,
- gas cloud inside the cabin,
- blast load

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Comparisons of Different Precision WENO Schemes for Simulating Blast Load of Gas Cloud Explosion inside a Cabin

doi: 10.11858/gywlxb.20170689

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Comparisons of Different Precision WENO Schemes for Simulating Blast Load of Gas Cloud Explosion inside a Cabin

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