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A premixed laminar flame is stabilized in a one - dimensional gas flow where the vertical velocity, v ( cm / s ) , of
A premixed laminar flame is stabilized in a onedimensional gas flow where the vertical velocity, v cms of the unburned mixture varies with the horizontal coordinate, x cm according to the following equation. A in the equation is used to assess different multiples of the laminar flame speed. In this equation L is half of the burner horizontal opening. For this problem, consider L cm ASL v : Consider propane at Tu K P atm combustion in air at an equivalence ratio of Use the experimentally determined laminar flame speeds correlations determined by Metghalchi and Keck as follows: Y B Tu SL Slref Turef P Prer Yait SLref BM BCM y B These relations were developed relative to K and atm. For propane, M BM cms and B cms Complete the following steps. A Determine the laminar flame speed for propane at the given conditions. points B Determine the distribution of the local angle of the flame surface from vertical for A and Display your results by plotting the local angle vs horizontal distance, X points CAssuming the flame speed is independent of position and constant for all cases, determine the flame shape. Display your results by plotting the flame shape z vs horizontal distance x scaling your figures so that mm on the xaxis is the same size as mm on the zaxis. points D Describe the results of part B and C in your own words, referring to the plots developed. What is the impact of increasing the flow rate? points
A premixed laminar flame is stabilized in a onedimensional gas flow where the vertical velocity, of the unburned mixture varies with the horizontal coordinate, according to the following equation. A in the equation is used to assess different multiples of the laminar flame speed. In this equation is half of the burner horizontal opening. For this problem, consider
Consider propane at atm combustion in air at an equivalence ratio of Use the experimentally determined laminar flame speeds correlations determined by Metghalchi and Keck as follows:
These relations were developed relative to and atm. For propane, and Note, is the mass fraction of diluent present if any in the airfuel mixture. Complete the following steps.
A Determine the laminar flame speed for propane at the given conditions. points
B Determine the distribution of the local angle of the flame surface from vertical for and Display your results by plotting the local angle vs horizontal distance, x points
C Assuming the flame speed is independent of position and constant for all cases, determine the flame shape. Display your results by plotting the flame shape z vs horizontal distance scaling your figures so that on the axis is the same size as on the axis. points
D Describe the results of part B and C in your own words, referring to the plots developed. What is the impact of increasing the flow rate? points
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