Deformable wall effects on the detonation of combustible gas mixture in a thin-walled tube

Gwak, Min-cheol; Lee, Young-Hun; Kim, Ki-hong; Yoh, Jack J.

doi:10.1016/j.ijhydene.2014.12.127

Cited by 24 publications

(7 citation statements)

References 20 publications

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“…where ρ, u x , u y , and P are the density, x-axis velocity, y-axis velocity, and pressure, respectively. The governing equations are solved by a third-order Runge-Kutta and convex essentially nonoscillatory method in the temporal and spatial discretizations, respectively [14].…”

Section: A Governing Equations For Fluidmentioning

confidence: 99%

“…In this paper, we consider a large deformation problem using a combined Lagrangian-Eulerian method based on the immersed boundary method for a multimaterial problem [12][13][14] and the hybrid particle level-set method for tracking material interface motion [15]. The ghost nodes are defined in the neighboring material of a real material based on the isentropic theory.…”

mentioning

confidence: 99%

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Numerical Simulation of Fluid–Structure Interaction Problem Associated with Vertical Launching System

Lee

Gwak

Cho

et al. 2018

Journal of Spacecraft and Rockets

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We develop a combined Lagrangian-Eulerian method for transient fluid-structure interaction problems. Based on the ghost fluid framework for improving interface tracking accuracy between a fluid (hot rocket exhaust plume) and a high strain rate deforming solid (rear cover of a vertical launch system), the numerical coupling between the two media ensures an accurate description of the flexible structure. A nine-node quadrilateral element based on total Lagrangian formulation is used, while the hydrodynamic finite difference method is used for the supersonic exhaust plume that forms a complex flow within the plenum. The Lagrangian, Eulerian, and fluid-structure interaction coupling methods are verified by ANSYS results and related theories. A two-dimensional simulation of the full vertical launch system operation mode is conducted. This requires an accurate reproduction of the complex flowfield generated by the rapid rear cover opening under a high-pressure plume during rocket launch. This fluid-structure interaction problem solution may be used for future design upgrades when a vertical launch system is exposed to unusually harsh interactive gas and structure conditions.

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Section: A Governing Equations For Fluidmentioning

confidence: 99%

mentioning

confidence: 99%

Numerical Simulation of Fluid–Structure Interaction Problem Associated with Vertical Launching System

Lee

Gwak

Cho

et al. 2018

Journal of Spacecraft and Rockets

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“…8, the DAF for Cu is 2.03, and it is 2.02 for 304 stainless steel, which are obtained from the kerosene-air mixture detonation velocity of 1750 m∕s. As for the thin tube, the corresponding burst pressure [3] is given by the following expression:…”

Section: Detonation-loaded Tubementioning

confidence: 99%

“…The PDE system has been developed for diverse uses as in ramjet engines and for attitude control in rocket engines. Hydrogen-, methane-, and kerosene-based fuels have been in use for PDE [1][2][3][4][5][6][7][8][9], and the shocktube experiments [5][6][7][8][9] have been reported for studying reaction properties of these fuels. Kerosene is a compound of many different hydrocarbons, making it extremely challenging to compile a set of realistic chemical kinetics that can precisely describe the reaction response.…”

Section: Introductionmentioning

confidence: 99%

“…Kerosene is a compound of many different hydrocarbons, making it extremely challenging to compile a set of realistic chemical kinetics that can precisely describe the reaction response. Instead, a one-step detonation model based on the Arrhenius rate law has been proposed for various fuels [3,10], and likewise in our research, a simple step reaction model is adapted in tracking the detonation characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation of Kerosene-Based Pulse-Detonation Loading on the Metal Tubes

Gwak

Lee

Yoh

2016

Journal of Propulsion and Power

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This paper presents a numerical investigation on the kerosene-air mixture detonation in tubes and the effect of thermal softening on the structural response of the tube of varying thicknesses. The chemical reaction of kerosene-air mixture is modeled by the Arrhenius rate law with an ideal-gas equation of state, and the plastic deformation of the metal tube is described by the Mie-Gruneisen equation of state and Johnson-Cook strength model. To track the multimaterial interface motion and to determine the temperature-varying wall conditions, a hybrid particle-level-set method within the ghost-fluid framework is used. The pulse-detonation loading of metal tube is validated with experimental cell size, and the burst pressure of copper and 304 stainless tubes for varying wall thicknesses and wall temperatures is compared with the theory. The safety aspect of detonation tube is addressed by the observation that the prediction of critical tube thickness with thermal softening included is a better fit to the theoretical value than no thermal softening included.

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Understanding the effects of blast loads on open spaces and enclosed structures in simulations and experiments

Roh

Lee

et al. 2020

Shock Waves

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Deformable wall effects on the detonation of combustible gas mixture in a thin-walled tube

Cited by 24 publications

References 20 publications

Numerical Simulation of Fluid–Structure Interaction Problem Associated with Vertical Launching System

Numerical Simulation of Fluid–Structure Interaction Problem Associated with Vertical Launching System

Numerical Investigation of Kerosene-Based Pulse-Detonation Loading on the Metal Tubes

Understanding the effects of blast loads on open spaces and enclosed structures in simulations and experiments

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