TY - GEN
T1 - The effect of flow compression on the determination of flame speeds using propagating spherical flames at normal and high pressures
AU - Chen, Z.
AU - Ju, Yiguang
PY - 2007
Y1 - 2007
N2 - The effect of flow compression on the determination of laminar flame speeds utilizing spherical bombs at normal and high pressures is studied theoretically and numerically. The results show that compression induced flow has significant impacts on the accuracy of the measured flame speeds. An analytical expression for compression induced flow is obtained, and by considering the compression induced flow, the compression corrected flame speed (CCFS) is proposed for flame speed measurements using expanding spherical flames. The theoretical results are validated by direct numerical simulations of outwardly propagating spherical CH4/air flames using detailed chemistry. It is found that the accuracy of the measured flame speeds is greatly improved by using the CCFS and the pressure range is increased by considering compression effect.
AB - The effect of flow compression on the determination of laminar flame speeds utilizing spherical bombs at normal and high pressures is studied theoretically and numerically. The results show that compression induced flow has significant impacts on the accuracy of the measured flame speeds. An analytical expression for compression induced flow is obtained, and by considering the compression induced flow, the compression corrected flame speed (CCFS) is proposed for flame speed measurements using expanding spherical flames. The theoretical results are validated by direct numerical simulations of outwardly propagating spherical CH4/air flames using detailed chemistry. It is found that the accuracy of the measured flame speeds is greatly improved by using the CCFS and the pressure range is increased by considering compression effect.
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M3 - Conference contribution
AN - SCOPUS:84943533007
T3 - 5th US Combustion Meeting 2007
SP - 356
EP - 361
BT - 5th US Combustion Meeting 2007
PB - Combustion Institute
T2 - 5th US Combustion Meeting 2007
Y2 - 25 March 2007 through 28 March 2007
ER -