Liu Yu, Wang Jinduo, Gu Wu, Ma Hongan, Zeng Wen
Liaoning Key Lab of Advanced Test Technology for Aerospace Propulsion System, Shenyang Aerospace University, Shenyang, Liaoning 110136, P.R.China.
ACS Omega. 2020 Sep 7;5(37):23510-23519. doi: 10.1021/acsomega.0c00789. eCollection 2020 Sep 22.
Experiments have been carried out in a constant volume chamber to investigate the effects of Chlorella oil addition on the laminar burning velocity and Markstein length of Chlorella oil/RP-3 kerosene blends at an initial pressure of 0.1 MPa and temperature of 450 K over a wide equivalence ratio range from 0.8 to 1.4. The result shows that at equivalence ratios of 0.9 and 1.1, with the increase of Chlorella oil addition, no cellular structure is observed in the flame propagation images. It means that the Chlorella oil addition has little effect on the flame stability under these experimental conditions; however, at an equivalence ratio of 1.3, with the increase of Chlorella oil addition from 0 to 0.5, the flame tends to be stable. It is found that the Markstein length of Chlorella oil/RP-3 blend decreases with the increase of the equivalence ratio. The blend with 0.5 Chlorella oil addition has a more rapid decrease in Markstein length compared with that of the RP-3 between the equivalence ratio from 1.1 to 1.3. The peak laminar burning velocity of Chlorella oil/RP-3 kerosene blend is obtained at the equivalence ratio of 1.1, and with the increase of Chlorella oil addition from 0 to 0.5, the laminar burning velocity increases about 20%.
已在定容燃烧室内开展实验，以研究在初始压力0.1MPa、温度450K以及当量比范围为0.8至1.4的条件下，添加小球藻油对小球藻油/RP-3煤油混合燃料层流燃烧速度和马克斯坦长度的影响。结果表明，在当量比为0.9和1.1时，随着小球藻油添加量的增加，在火焰传播图像中未观察到胞状结构。这意味着在这些实验条件下，添加小球藻油对火焰稳定性影响不大；然而，在当量比为1.3时，随着小球藻油添加量从0增加到0.5，火焰趋于稳定。研究发现，小球藻油/RP-3混合燃料的马克斯坦长度随当量比的增加而减小。在当量比从1.1至1.3之间，添加0.5小球藻油的混合燃料的马克斯坦长度相比RP-3下降得更快。小球藻油/RP-3煤油混合燃料的层流燃烧速度峰值在当量比为1.1时获得，随着小球藻油添加量从0增加到0.5，层流燃烧速度增加约20%。
