@Article{SeverinoDoniFach:2021:TrOnSt,
               author = "Severino, Matheus de P{\'a}dua and Donini, Mariovane Sabino and 
                         Fachini Filho, Fernando",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Dynamics of diffusion flames in a very low strain rate flow field: 
                         from transient one-dimensional to stationary two-dimensional 
                         regime",
              journal = "Combustion Theory and Modeling",
                 year = "2021",
               volume = "25",
               number = "5",
                pages = "861--888",
                month = "July",
             keywords = "diffusion flamediffusion flame dynamicsdouble Tsuji flameflame 
                         with continuous geometric variation1D transient flame to 2D 
                         stationary flame.",
             abstract = "The present work describes the transition of transient 
                         one-dimensional diffusion flame into a steady two-dimensional 
                         regime in a new flow field configuration. To that end, a 
                         cylindrical burner from which fuel is ejected radially and 
                         uniformly is positioned in the middle of two impinging flows. The 
                         chosen conditions are such that the strain rate is very low. The 
                         majority of the flame is located in a region of the flow field 
                         where spatial coordinates are scaled with the reciprocal of the 
                         square root of the strain rate, and the velocities are scaled with 
                         the square root of the strain rate. To simplify the model, a 
                         potential flow is assumed, with its results compared with those 
                         from a more detailed incompressible Navier-Stokes flow solution. 
                         The evolution of the flame is similar in both cases, which shows 
                         that the idealised potential flow describes well the flow field in 
                         such a geometry. Mixture fraction and excess enthalpy variables 
                         are employed to describe the infinitely fast chemical reaction, 
                         and therefore, fuel mass fraction, oxidiser mass fraction, and 
                         temperature fields. Results show that the initial flame 
                         displacement is controlled by the radial transport of fuel near 
                         the burner, where the impinging flows have a negligible influence. 
                         After that region, the flame is strongly influenced by the 
                         impinging flows where its acceleration is observed. Moreover, the 
                         proposed asymptotic solutions highlight the main transport 
                         mechanisms of reactants to the flame under different conditions 
                         and show the dependence of the flame on the chemical and flow 
                         field parameters. The stationary solution presents a diffusion 
                         flame with continuous geometric variation, from the counterflow to 
                         the coflow regime.",
                  doi = "10.1080/13647830.2021.1957155",
                  url = "http://dx.doi.org/10.1080/13647830.2021.1957155",
                 issn = "1364-7830",
             language = "en",
           targetfile = "severino_dynamics.pdf",
        urlaccessdate = "11 jun. 2024"
}