Experimental and numerical study of detonation in a closed chamber

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Makina Mühendisliği Bölümü, Türkiye

Tezin Onay Tarihi: 2016

Öğrenci: TUĞBERK İNCEKÜRK

Danışman: ABDULLAH ULAŞ

Özet:

The main objective of the thesis is to investigate the performance behavior of high explosive charges in a specific confined space with numerical methods and experiments. Internal blast performances of four different cylindrical high explosive charges in a closed spherical detonation chamber are evaluated and the results are compared with numerical simulations. For the numerical studies, in order to model explosives, widely used JWL equation of state is used. Numerical simulations are accomplished by commercial hydrocode solver in order for the comparison of the experimental results obtained from detonation chamber experiments. The hydrodynamics of detonation is modeled by 2D Multi-Material Eulerian axisymmetric simulations. The peak over-pressure and time of arrivals obtained from numerical simulations showed very good agreement with the average of experimental results. The variations in the explosive formulation result in variations in blast performance in terms of impulse and peak over-pressure.