A New Model Approach for Convective Wall Heat Losses in DQMoM-IEM Simulations for Turbulent Reactive Flows
| Autor: | Andreas Fiolitakis, K.J. Syed, Yeshaswini Emmi, Franklin Marie Genin, Manfred Aigner |
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| Rok vydání: | 2018 |
| Předmět: |
Convection
DQMOM Energy Engineering and Power Technology Aerospace Engineering 02 engineering and technology Method of moments (statistics) Computational fluid dynamics 01 natural sciences Methane 010305 fluids & plasmas Physics::Fluid Dynamics chemistry.chemical_compound 0103 physical sciences Boundary value problem Computersimulation convection turbulent flow Physics Turbulence business.industry Mechanical Engineering Heat losses Mechanics turbulent combustion 021001 nanoscience & nanotechnology Fuel Technology Nuclear Energy and Engineering chemistry Heat Loss wall heat loss Combustion chamber 0210 nano-technology business Simulation |
| Zdroj: | Volume 4B: Combustion, Fuels, and Emissions. |
| DOI: | 10.1115/gt2018-76811 |
| Popis: | A new model approach is presented in this work for including convective wall heat losses in the Direct Quadrature Method of Moments (DQMoM) approach, which is used here to solve the transport equation of the one-point, one-time joint thermochemical probability density function (PDF). This is of particular interest in the context of designing industrial combustors, where wall heat losses play a crucial role. In the present work, the novel method is derived for the first time and validated against experimental data for the thermal entrance region of a pipe. The impact of varying model-specific boundary conditions is analysed. It is then used to simulate the turbulent reacting flow of a confined methane jet flame. The simulations are carried out using the DLR in-house Computational Fluid Dynamics (CFD) code THETA. It is found that the DQMoM approach presented here agrees well with the experimental data and ratifies the use of the new convective wall heat losses model. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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