Effect of axial and circumferential length of rotating detonation combustor on pressure and temperature of outlet flow field

LI Shuai; WANG Dong; YAN Yu; HONG Liu; ZHOU Shengbing; MA Hu

doi:10.11883/bzycj-2016-0395

Volume 38 Issue 4

May 2018

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LI Shuai, WANG Dong, YAN Yu, HONG Liu, ZHOU Shengbing, MA Hu. Effect of axial and circumferential length of rotating detonation combustor on pressure and temperature of outlet flow field[J]. Explosion And Shock Waves, 2018, 38(4): 777-784. doi: 10.11883/bzycj-2016-0395

Citation:

LI Shuai, WANG Dong, YAN Yu, HONG Liu, ZHOU Shengbing, MA Hu. Effect of axial and circumferential length of rotating detonation combustor on pressure and temperature of outlet flow field[J]. Explosion And Shock Waves, 2018, 38(4): 777-784. doi: 10.11883/bzycj-2016-0395

Citation:

LI Shuai, WANG Dong, YAN Yu, HONG Liu, ZHOU Shengbing, MA Hu. Effect of axial and circumferential length of rotating detonation combustor on pressure and temperature of outlet flow field[J]. Explosion And Shock Waves, 2018, 38(4): 777-784. doi: 10.11883/bzycj-2016-0395

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Effect of axial and circumferential length of rotating detonation combustor on pressure and temperature of outlet flow field

doi: 10.11883/bzycj-2016-0395

1.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
Laboratory of Science and Technology on Liquid Rocket Engine, Xi'an Aerospace Propulsion Institute, Xi'an 710100, Shaanxi, China

Received Date: 2016-12-26
Rev Recd Date: 2017-03-21
Publish Date: 2018-07-25

Abstract

Abstract

For a better characterization of the correlation between the rotating detonation combustion chamber and the turbine, the characteristics of the rotating detonation outlet's flow field with equivalent hydrogen-air mixture were investigated numerically based on two-dimensional compressible Euler equations. The mean value of the outlet's total pressure pulse, distortion index and temperature distribution factor were analyzed in connection with different axial lengths and radiuses of the combustion. The results show that the value of the outlet's total pressure fluctuates periodically when the rotating detonation combustion remains in a steady state. The size of the combustor has significant influence on the homogeneity of the outlet's flow field. With the increase of the axial length or the decrease of the circumferential dimension of the combustion, the mean value of the outlet's total pressure pulsation, the distortion index and the outlet temperature distribution coefficient all decrease, whereas the homogeneity of the outlet's flow field increases. In addition, the height of the detonation wave gets bigger as does the circumferential size but the axial length has little effect on the height of the detonation wave.
- rotating detonation,
- length of combustor,
- outlet' flow field,
- total presssure pulsation,
- distortion coefficient,
- outlet temperature distribution factor

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References(18)

References

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