Characterization of flame front surfaces in turbulent premixed methane/Air combustion

Effects of mixture composition and turbulence intensity on flame front structure and burning velocities of premixed turbulent hydrocarbon/air Bunsen flames

“…The ratio of the leading edge to the half-burning surface turbulent burning velocity, S T, c =0.05 /S T, c =0.5 , changed from 1.84 to 2.84, see Table 4. A similar observation was previously reported in [24], whereas Smallwood et al [52] proposed that this ratio varies from 1.2 to 1.5 for premixed turbulent Bunsen flames. As discussed in [24], this difference may be attributed to the different methods utilized for evaluating the mean turbulent flame surface area and different ranges of non-dimensional turbulence intensity tested.…”

“…This technique has been extensively used for flame front visualization of Bunsen-type flames [2,3,27,32,[49][50][51][52][53][54][55][56], V-shaped flames [2,36,37,[57][58][59], and swirl-stabilized flames [60][61][62]. The laser, light sheet optical assembly, CCD camera, and bandpass filter used in this technique were similar to the equipments utilized in the particle image velocimetry technique described in detail in Section 2.2.…”

Burning velocity and statistical flame front structure of turbulent premixed flames at high pressure up to 1.0 MPa

“…Measurement of turbulent burning velocity using a Bunsen-type burner with a conventional angle method has been widely used [28,29],…”

A Fractal Dynamic SGS Combustion Model for Large Eddy Simulation of Turbulent Premixed Flames

“…In Figure 5, in;3D is plotted against D=δ F , where D is the most expected diameter of coherent fine scale eddies (D ¼ 8:0η) (Tanahashi et al, 2001;Wang et al, 2007). Inner cutoffs and models reported in previous studies (Goix and Shepherd, 1993;Gorgen and Gökalp, 1993;Gülder and Smallwood, 1995;Gülder et al, 2000;Kobayashi et al, 2005;Peters, 1986;Poinsot et al, 1990;Roberts et al, 1993;Shim et al, 2011;Smallwood et al, 1995) are also shown in Figure 5. The 3D inner cutoffs in;3D obtained in the present DNS have a comparable trend with previous experimental and numerical results shown in the figure.…”