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http://dx.doi.org/10.6108/KSPE.2018.22.2.066

A CFD Study on the Combustion Pressure Oscillation by a Location of a Pressure Transducer inside Closed Vessel  

Han, Doo-hee (School of Mechanical and Aerospace Engineering, Korea Aerospace University)
Ahn, Gil-hwan (Energetic Materials & Pyrotechnics Department, Hanwha Corporation R&D Institute)
Ryu, Byung-tae (Agency for Defense Development)
Sung, Hong-gye (School of Mechanical and Aerospace Engineering, Korea Aerospace University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.22, no.2, 2018 , pp. 66-73 More about this Journal
Abstract
A computational fluid dynamics simulation of pyrotechnic material combustion inside a cylindrical closed vessel was carried out using the Eulerian-Lagrangian method. The 5th order upwind WENO scheme and the improved delayed detached eddy turbulence model were implemented to capture shock waves. The flow structure was analyzed inside the cylindrical vessel with a pressure sensor installed at the side wall center. The analysis revealed that the pressure oscillated because of the shock wave vibration. Additionally, the simulation results with four different sensor tab depths implied that, inside the sensor tab, eddies were generated by the excessively large gap between the sensor diaphragm and the side wall. These eddies caused irregularity to the measured time-pressure curve, which is an undesirable characteristic.
Keywords
Closed Bomb Test; Reactive Two-phase Flow; Eulerian-Lagrangian Method;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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