Zobrazeno 1 - 10
of 146
pro vyhledávání: '"Radulescu, Matei"'
Autor:
Zangene, Farzane, Radulescu, Matei I.
This study investigates the role of two inert mono-atomic diluents, argon and helium, on the detonation structure in order to assess the importance of vibrational non-equilibrium and wall losses. When relaxation effects and wall losses are neglected,
Externí odkaz:
http://arxiv.org/abs/2410.17561
We address the problem of shock induced ignition and transition to detonation in a reactive medium in the presence of mechanically induced fluctuations by a moving oscillating piston. For the inert problem prior to ignition, we provide a closed form
Externí odkaz:
http://arxiv.org/abs/2312.05443
Autor:
Zangene, Farzane, Radulescu, Matei
The objective of this study is to determine the critical conditions for a detonation wave formation following a Mach reflection of two incident shocks. This problem is central to the propagation mechanism of cellular detonations, where such periodic
Externí odkaz:
http://arxiv.org/abs/2312.04785
A minimal model for curved detonations is studied, illustrating the role of the reaction rate on the detonation speed and its propagation limits. The model is based on a simple extension of the minimal Fickett toy model for detonations based on the k
Externí odkaz:
http://arxiv.org/abs/2312.03892
Autor:
Rădulescu, Matei Ioan
We derive the shock strength area rule for a Noble-Abel stiffened gas (NASG) equation of a state required in Whitham's geometrical shock dynamics approach to determine shock wave dynamics in dense gases, liquids and solids. An exact formulation requi
Externí odkaz:
http://arxiv.org/abs/2311.13704
Autor:
Rădulescu, Matei Ioan
The solution of self-similar shock dynamics satisfying the inviscid Burgers equation are provided in closed form for planar, cylindrical and spherical problems. The approach follows Lee's method for obtaining self-similar solutions for the Euler equa
Externí odkaz:
http://arxiv.org/abs/2311.09909
The present work reports new experiments of detonation diffraction in a 2D channel configuration in stoichiometric mixtures of ethylene, ethane, and methane with oxygen as oxidizer. The flow field details are obtained using high-speed schlieren near
Externí odkaz:
http://arxiv.org/abs/2211.07038
Autor:
Cheevers, Kevin, Radulescu, Matei
We first address the problem of initiation behind decaying shock waves analytically and numerically. The ignition along a particle path crossing the shock is analysed in terms of its volumetric expansion, evaluated as a function of the shock strength
Externí odkaz:
http://arxiv.org/abs/2211.05216
One strategy for arresting propagating detonation waves in pipes is by imposing a sudden area enlargement, which provides a rapid lateral divergence of the gases in the reaction zone and attenuates the leading shock. For sufficiently small tube diame
Externí odkaz:
http://arxiv.org/abs/2105.04481
Publikováno v:
In Combustion and Flame February 2024 260
