Combustion is a complex process that involves the interaction of fluid dynamics, thermodynamics, and chemical kinetics. In order to design efficient combustion systems, it is important to understand the underlying physics and chemistry of the process. Reacting flows and combustion simulations can be used to model and predict the behavior of combustion systems under different conditions.
Reacting flows refer to fluid flows that involve chemical reactions. Combustion is a typical example of a reacting flow, where fuel and oxidizer are mixed together and ignite to release heat energy. Combustion simulations involve solving the governing equations of fluid dynamics, heat transfer, and chemical kinetics, along with boundary conditions and initial conditions, to predict the behavior of the combustion system.
The accurate modeling of combustion chemistry is critical to designing efficient and environmentally friendly combustion systems. Chemical kinetics models describe the chemical reactions that take place during combustion, including the rate at which reactants are consumed and products are formed. Advanced chemistry solvers, such as detailed chemical kinetic mechanisms or reduced chemical models, can be used to predict the formation of pollutants and other undesirable combustion byproducts.
In order to accurately model combustion, it is important to account for the interactions between turbulence, mixing, and chemical reactions. Turbulence models are used to capture the turbulent flow behavior of the fuel and oxidizer mixture, while mixing models are used to predict the mixing of fuel and oxidizer. Chemical kinetics models are used to describe the chemical reactions that take place during combustion, including the rate at which reactants are consumed and products are formed.
The use of detailed chemistry in combustion simulations allows for the prediction of species concentrations and temperature profiles throughout the combustion process. This can help to optimize combustion systems for improved energy efficiency and reduced emissions. For example, detailed chemistry simulations can be used to predict the formation of pollutants and other undesirable combustion byproducts, and to evaluate the effectiveness of different combustion control strategies.
We use advantage of CFD solvers detailed chemistry, multiphase flow modeling, and other powerful features of CFD softwares(Siemens Star-ccm+, AVL Fire, Ansys Fluent, Converge).
Solve Complex Problems with Multiphysics Simulation.
Engine exhaust aftertreatment systems are designed to reduce emissions of harmful pollutants such as NOx, CO, and particulate matter from the exhaust gases of engines and power generation equipment. These systems typically use a combination of physical and chemical processes, such as selective catalytic reduction (SCR), diesel particulate filters (DPF), and oxidation catalysts, to convert or remove pollutants from the exhaust gases.
CFD simulations can be used to design and optimize aftertreatment systems for improved performance and reduced costs. For example, CFD simulations can be used to evaluate the flow and mixing of exhaust gases within the aftertreatment system, which can affect the efficiency of the chemical reactions that take place. CFD simulations can also be used to optimize the placement and configuration of catalysts and filters within the system, to ensure that exhaust gases are effectively treated.
In addition, CFD simulations can be used to evaluate the thermal performance of aftertreatment systems, which is critical for maintaining the durability and effectiveness of the components. Thermal stresses and temperature gradients within the system can cause damage to components and affect their performance over time. CFD simulations can be used to evaluate these factors and to optimize the design of the aftertreatment system for improved durability and reliability.
Revolutionize Fluid Dynamics with CFD Simulation.
Fuel injectors and spray simulation are important aspects of the design and optimization of internal combustion engines. CFD software, such as AVL Fire, Siemens Star-ccm+, Ansys Fluent, and Converge, are well-equipped to simulate fuel injectors and spray processes, including liquid atomization, drop breakup, collision and coalescence, turbulent dispersion, spray cavitation, drop-wall interaction, and drop evaporation.
The simulation of fuel injectors and sprays can provide valuable insights into the behavior of internal combustion engines and can help to optimize their performance. For example, fuel injector and spray simulations can be used to evaluate the impact of different injector designs on fuel efficiency, emissions, and combustion stability. They can also be used to optimize the fuel injection strategy for different operating conditions, such as different engine speeds and loads.
In addition, fuel injector and spray simulations can help to optimize the combustion process by predicting the distribution of fuel and air within the combustion chamber, and by predicting the formation of pollutants and other combustion byproducts. This information can be used to optimize the design and operation of internal combustion engines for improved energy efficiency and reduced environmental impact.
Engineering Reliability, One Simulation at a Time.
With using advanced and specialized CFD tools such as AVL Fire, Siemens Star-ccm+, Ansys Fluent and Converge, Simulation Dynamics engineers can accurately predict important kinetically limited gas turbine phenomena such as ignition, flashback, and lean blow off. In addition, we can investigate the combined effects of chemistry and turbulence and optimize combustor performance parameters.
Artificial Intelligence & Machine Learning Powers the Future of Simulation.