Моделирование горения является ключевым аспектом полномасштабного трехмерного моделирования современных и перспективных двигателей для авиационно-космических силовых установок. В данной работе изучается возможность решения задач химической кинетики с использованием искусственных нейронных сетей. С помощью классических численных методов были построены наборы обучающих данных. Выбирая среди разли...

Visual simulation of fire is used as special effects in movies, applications of fire simulation for the training in disaster prevention. In this paper, we propose techniques for simulating fire spread taking into account the various properties of materials, and for an effective visualization of combustion phenomenon. In our simulation method, the flame dynamics is obtained by combining the Navi...

Title of dissertation: NUMERICAL SIMULATION OF LOW-PRESSURE EXPLOSIVE COMBUSTION IN COMPARTMENT FIRES Hu Zhixin Doctor of Philosophy, 2008 Dissertation directed by: Professor Arnaud Trouvé Department of Mechanical Engineering A filtered progress variable approach is adopted for large eddy simulations (LES) of turbulent deflagrations. The deflagration model is coupled with a nonpremixed combusti...

Direct numerical simulation (DNS) results of turbulent MILD premixed and conventional (undiluted) premixed combustion have been investigated to shed light on the physical aspects of reaction zones and their morphology in MILD combustion. Results of a premixed case are used for comparative analyses. The analyses show that the regions with strong chemical activity in MILD combustion are distribut...

Computational fluid dynamics simulation of methane combustion using chemical kinetics is studied. Linear least squares data fit to measured concentrations and temperatures is used to modify reaction rate parameters in the Arrhenius rate equation for combustion of methane. The modification of reaction rate parameters influences the result of CFD-simulations to predict combustion at experimental ...

A multi-pulse injection strategy for premixed charge compression ignition (PCCI) combustion was investigated in a four-valve, direct-injection diesel engine by a computational fluid dynamics (CFD) simulation using KIVA-3V code coupled with detailed chemistry. The effects of fuel splitting proportion, injection timing, spray angles, and injection velocity were examined. The mixing process and fo...

Combustion optimization adjustment can effectively suppress NOx emissions from power plant boilers. Current combustion optimization adjustment methods involve nonlinear optimization based on the boiler combustion model, such as optimization by a genetic algorithm or particle swarm algorithm. The computational complexity of these methods results in poor real-time performance, which limits their ...