burner was used for the experiment at ordinary pressure.
2. Experimental apparatus and procedure
The High-Pressure Combustion Test Facility at the Institute of Fluid Science, Tohoku Univer- sity, including an electrical air-heater to preheat supplied air before mixing with fuel in the cham- ber, was used [4,7]. The total power of the heater was 10 kW.
In addition to a stainless steel nozzle-type bur- ner with an outlet diameter of 20 mm, a newly constructed circular outlet burner with an outlet diameter of 60 mm, as shown in Fig. 1, was used. In this study, the former burner is referred to as O.D.20 or the O.D.20 burner and the latter as O.D.60 or the O.D.60 burner. In the previous study, the significant role of turbulence Reynolds number based on the Taylor microscale, Rk, was confirmed for discussion of the relationship be- tween turbulence scale and the smallest scale of flame wrinkling. When the O.D.20 burner was used at atmospheric pressure, it was found that Rk is small and the range is limited. Also, the inte- gral scale of turbulence was small, making it
burner was used for the experiment at ordinary pressure.2. Experimental apparatus and procedureThe High-Pressure Combustion Test Facility at the Institute of Fluid Science, Tohoku Univer- sity, including an electrical air-heater to preheat supplied air before mixing with fuel in the cham- ber, was used [4,7]. The total power of the heater was 10 kW.In addition to a stainless steel nozzle-type bur- ner with an outlet diameter of 20 mm, a newly constructed circular outlet burner with an outlet diameter of 60 mm, as shown in Fig. 1, was used. In this study, the former burner is referred to as O.D.20 or the O.D.20 burner and the latter as O.D.60 or the O.D.60 burner. In the previous study, the significant role of turbulence Reynolds number based on the Taylor microscale, Rk, was confirmed for discussion of the relationship be- tween turbulence scale and the smallest scale of flame wrinkling. When the O.D.20 burner was used at atmospheric pressure, it was found that Rk is small and the range is limited. Also, the inte- gral scale of turbulence was small, making it
การแปล กรุณารอสักครู่..
