نتایج جستجو برای: solution combustion
تعداد نتایج: 493663 فیلتر نتایج به سال:
The use of robust and accurate Eulerian/Eulerian formulations in the modeling of reactive two-phase flow would be a major step forward in the framework of turbulent combustion modeling with massively parallel supercomputers. Therefore, the ability of the Eulerian multi-fluid model to capture all stages of turbulent spray combustion has been tested and compared with a usual Lagrangian formulatio...
In this research LiMn1.5Ni0.5O4 nano powders that are used as cathode material for lithium-ion batteries were prepared by solution combustion synthesis route. Cetyl trimethyl ammonium bromide (CTAB), mixture of “CTAB and glycine” and also mixture of “CTAB and citric acid” were used as fuel using fuel to oxidant ratio of 0.5. The effect of fuel type on microstructure and electrochemical properti...
In this research zinc oxide particles prepared by solution combustion synthesis using zinc nitrate as oxidant and citric acid as fuel. The effect of citric acid to oxidant ratio (0.5, 1, 2 and 3) on phase formation, microstructure, optical properties and photocatalytic performance of the powders were studied using XRD, SEM and DRS techniques. Single phase ZnO particles by wurtzite structure was...
In this paper, the Radiation Transfer Equation(RTE) for a non-gray gas between two large parallel planes has been solved and the temperature distribution obtained. With the RTE, solution heat fluxes are also determined. Since and are two components of most combustion products, the problem has been solved for these two gases. The results were, whenever possible, compared with data reported el...
In this paper, the problem of eco-driving for a conventional vehicle equipped with an internal combustion engine is studied. The associated optimal control problem is formulated and solved using Dynamic Programming (DP). The impact of the mesh choice on the optimality of the DP solution is investigated in order to find a trade-off between the optimality of the DP solution and its computation ti...
The occurrence of any oscillation and turbulence in the combustion chamber pressure exits the combustion stability conditions. The range of these fluctuations depends on productive operating conditions and is always undesirable, even if they do not have explosion and destruction effects. In this paper, while investigating the process of combustion solid propellant combustion phenomenon and its ...
Amodi ed Price–Boggs–Derr model is applied to compute the linear and nonlinear combustion response properties of monopropellant ammonium perchlorate (AP). The kinetics constants were changed to achieve good agreement with response function data as well as with steady-state data. The numerical method was rst validated with the classical theory. Computations using the Levine and Culick boundar...
The lagrangian point of view is adopted to study turbulent premixed combustion. The evolution of the volume fraction of combustion products is established by the Reynolds transport theorem. It emerges that the burned-mass fraction is led by the turbulent particle motion, by the flame front velocity, and by the mean curvature of the flame front. A physical requirement connecting particle turbule...
in this paper a mathematical simulation of a simplified internal combustion engine is presented. to contribute engine kinematics and its geometry, simple relations are derived for constrained motions. the equation of motion for the piston forms a singular boundary value problem. the uniqueness of the solution was studied in the banach space. for solving governing equations an iterative numerica...
This article reviews the role played by carbon and capture (CCS) technologies in order to facilitate the transition to low-carbon emitting technologies in the medium term. More precisely, we address the following central questions: how will the development of CCS technologies impact energy policies in order to yield to sustainable energy solutions? At what costs will pollution reductions be ach...
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