A numerical simulation of hydrogen-oxygen mixture combustion in a water-cooled combustion chamber

The efficiency of hydrogen combustion in an oxygen environment under various conditions is considered as a fundamental part of the nuclear power plant combination with hydrogen technology. The paper analyses two computational models: The Chemical Equilibrium and Steady Diffusion Flamelet models. A numerical simulation of the hydrogen-oxygen mixture combustion at stoichiometric conditions and heat transfer process in a water-cooled combustion chamber has been performed. It is shown that the most efficient hydrogen combustion is at a pressure of 6 MPa for both models. Additionally, the peak temperature of the cooling water is observed at a pressure of around 1.75 MPa. It is established that the Steady Diffusion Flamelet model has an advantage over the Chemical Equilibrium model while the use of the latter can fail to predict a correct combustion profile.