Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Study on dynamic ablation characteristics of insulator for end burning charge motor
| DOI: | 10.11809/bqzbgcxb2024.09.003 |
| Keywords: | end burning charge; flow field boundary; coating layer; insulation layer; dynamic ablation |
| Abstract: | In order to more accurately predict the ablation changes of insulator during the operation of end burning charge motor, the boundary movement of the combustion chamber flow field was controlled based on the real process of burning surface retreat and coating layer damage. Coupled simulation calculations were conducted on the flow field and insulator ablation. The dynamic ablation of insulator under the movement of flow field boundaries is obtained and the effect of burning rate on the dynamic ablation of insulator is analyzed. The results show that the calculated thickness of the char layer of the insulator under the movement of the flow field boundary is about 0.48 mm higher than that under the fixed flow field boundary, reflecting the phenomenon of intensified ablation of the insulator caused by the damage of the coating layer in real motor. Compared with high burning rate conditions, high speed airflow at low burning rate can erode and damage a larger range of coating layer, leading to more severe ablation of insulator, so this issue needs to be carefully considered in insulator design.ξ |
| Issue: | Vol. 45 No. 9 (2024) |
| Published: | 2024-09-30 |
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