The Design – Combustion Design Modeler Steady-State Simulation | ANSYS Fluent
Combustion, or burning, is a high-temperature exothermic redox chemical reaction between a fuel (the reductant) and an oxidant, usually, atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. Combustion doesn’t always result in fire, but when it does, a flame is a characteristic indicator of the reaction. While the activation energy must be overcome to initiate combustion (e.g., using a lit match to light a fire), the heat from a flame may provide enough energy to make the reaction self-sustaining. Combustion is often a complicated sequence of elementary radical reactions. Solid fuels, such as wood and coal, first undergo endothermic pyrolysis to produce gaseous fuels whose combustion then supplies the heat required to produce more of them. Combustion is often hot enough that incandescent light in the form of either glowing or a flame is produced. A simple example can be seen in the combustion of hydrogen and oxygen into water vapor, a reaction commonly used to fuel rocket engines.
In this analysis, it has been tried to analyze of Combustion Design Modeler Steady-State Simulation using the ANSYS Fluent software.
Geometry & Grid
The geometry required for this analysis was generated by Ansys Design Modeler software. The meshing required for this analysis was also generated by Ansys Meshing software. The mesh type used in this analysis is unstructured. The total number of volume properties for geometry is 1,2089e-002 m³.
In this analysis, the k-epsilon (2 equation) turbulence viscosity model is used to check the fluid flow. The standard wall function is used near the wall.
The flow of primary air input design modeler geometry for this analysis is considered as a mass flow rate and is 0.0095 kg/s. The turbulence of the design modeler is set with an intensity equal to 10 %. The turbulence viscosity ratio of the design modeler is set with a viscosity ratio of 10.
The flow of secondary air input design modeler geometry for this analysis is considered as a mass flow rate and is 0.00079545 kg/s. The turbulence of the design modeler is set with an intensity equal to 10 %. The turbulence viscosity ratio of the design modeler is set with a viscosity ratio of 10.
The flow output range is also considered as a pressure outlet for the flow output region and gauge pressure is equal to 0. The inner wall is also considered a Stationary Wall.
Discretization of Equations
In this analysis, high-resolution is used for the advection scheme of the basic settings. In this analysis, the first-order is used for turbulence numerics. In this analysis, the residual type of convergence criteria is RMS and the residual target of convergence criteria is 1.E-3.
The results are presented as temperature contours as well as streamlines.
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