Volume 12, Issue 5 (2013)                   Modares Mechanical Engineering 2013, 12(5): 112-121 | Back to browse issues page

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sheibani E, Mirzaei M. Numerical Analysis of Mechanical and Thermal Stress in Thin Cylindrical Tube under Internal Gaseous Detonation. Modares Mechanical Engineering. 2013; 12 (5) :112-121
URL: http://journals.modares.ac.ir/article-15-8688-en.html
1- associated professor of Aerospace engineerng at Tarbiat Modares university
Abstract:   (3602 Views)
Abstract- Gaseous detonation in tubes produces moving pressure-thermal waves. A gaseous detonation consists of a shock wave and a reaction zone that are tightly coupled. The speed, pressure, and temperature of the products of detonation depend on the type and amount of the initial mixture. The maximum pressure of mechanical wave caused by detonation can be as high as 20-30 times the ambient pressure and temperature of gas in detonation may exceed 2000°C. The mechanical shock waves can cause oscillating strains in the tube wall, which can be several times higher than the equivalent static strains. On the other hand, the passage of the heat wave produces thermal stresses in the tube wall. In the current study the resulting mechanical and thermal stresses have been assessed using numerical simulations. In practice, the mechanical and thermal displacements have been computed separately. Finally, the combined effects of mechanical and thermal stresses caused by gaseous detonation have been simulated.
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Article Type: Research Article | Subject: Solar Energy & Radiation
Received: 2011/12/25 | Accepted: 2012/07/16 | Published: 2012/11/18

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