Optimization Research on the Performance of the RC-DTH Air Hammer Based on Computational Fluid Dynamics
To optimize the performance of the RC-DTH air hammer, a mathematical model detailing each phase of the piston’s movement has been constructed in the present work. Simultaneously, a novel piston structure of the RC-DTH air hammer (Type B) with diverse internal flow has been proposed. The impact perfo...
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2025-01-01
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| Online Access: | https://www.mdpi.com/2076-3417/15/2/740 |
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| author | Zihao Liu Yongjiang Luo Wenchao He Rui Tao Jiangfu He Yongliang Sun Hongwei Chen Qianting Hu |
| author_facet | Zihao Liu Yongjiang Luo Wenchao He Rui Tao Jiangfu He Yongliang Sun Hongwei Chen Qianting Hu |
| author_sort | Zihao Liu |
| collection | DOAJ |
| description | To optimize the performance of the RC-DTH air hammer, a mathematical model detailing each phase of the piston’s movement has been constructed in the present work. Simultaneously, a novel piston structure of the RC-DTH air hammer (Type B) with diverse internal flow has been proposed. The impact performance of the structurally modified RC-DTH hammer is analyzed using Computational Fluid Dynamics (CFD). Additionally, an impact energy testing system for the RC-DTH air hammer is developed to confirm the validity of the numerical simulation results. Research results have shown that enhancing both the intake stroke of the upper chamber (<i>F</i><sub>1</sub>) and the outlet stroke of the lower chamber (<i>R</i><sub>2</sub>) of the RC-DTH air hammer piston can effectively improve the piston’s impact performance. Conversely, increasing the inlet stroke of the lower chamber (<i>R</i><sub>1</sub>) and the outlet stroke of the upper chamber (<i>F</i><sub>2</sub>) tends to diminish the piston’s impact performance. Moreover, the quality of the piston influences its striking frequency while having a minimal impact on single-impact energy. As the piston quality increases, the power of the impact diminishes. Once the piston valve stroke parameters are optimized, its impact performance is enhanced by 20.32%. Compared to the GQ89 hammer, the Type B hammer exhibits an 84% increase in impact energy and a 74% increase in impact power. |
| format | Article |
| id | doaj-art-585a914ca0eb46e79cc7044c14a046d7 |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-585a914ca0eb46e79cc7044c14a046d72025-01-24T13:20:39ZengMDPI AGApplied Sciences2076-34172025-01-0115274010.3390/app15020740Optimization Research on the Performance of the RC-DTH Air Hammer Based on Computational Fluid DynamicsZihao Liu0Yongjiang Luo1Wenchao He2Rui Tao3Jiangfu He4Yongliang Sun5Hongwei Chen6Qianting Hu7State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaNingxia Institute of Mineral Geological Survey, Yinchuan 750000, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaNingxia Institute of Mineral Geological Survey, Yinchuan 750000, ChinaChina National Gold Engineering Co., Ltd., Beijing 404306, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaTo optimize the performance of the RC-DTH air hammer, a mathematical model detailing each phase of the piston’s movement has been constructed in the present work. Simultaneously, a novel piston structure of the RC-DTH air hammer (Type B) with diverse internal flow has been proposed. The impact performance of the structurally modified RC-DTH hammer is analyzed using Computational Fluid Dynamics (CFD). Additionally, an impact energy testing system for the RC-DTH air hammer is developed to confirm the validity of the numerical simulation results. Research results have shown that enhancing both the intake stroke of the upper chamber (<i>F</i><sub>1</sub>) and the outlet stroke of the lower chamber (<i>R</i><sub>2</sub>) of the RC-DTH air hammer piston can effectively improve the piston’s impact performance. Conversely, increasing the inlet stroke of the lower chamber (<i>R</i><sub>1</sub>) and the outlet stroke of the upper chamber (<i>F</i><sub>2</sub>) tends to diminish the piston’s impact performance. Moreover, the quality of the piston influences its striking frequency while having a minimal impact on single-impact energy. As the piston quality increases, the power of the impact diminishes. Once the piston valve stroke parameters are optimized, its impact performance is enhanced by 20.32%. Compared to the GQ89 hammer, the Type B hammer exhibits an 84% increase in impact energy and a 74% increase in impact power.https://www.mdpi.com/2076-3417/15/2/740RC-DTH air hammercontinuous samplingCFDimpact performancestroke |
| spellingShingle | Zihao Liu Yongjiang Luo Wenchao He Rui Tao Jiangfu He Yongliang Sun Hongwei Chen Qianting Hu Optimization Research on the Performance of the RC-DTH Air Hammer Based on Computational Fluid Dynamics Applied Sciences RC-DTH air hammer continuous sampling CFD impact performance stroke |
| title | Optimization Research on the Performance of the RC-DTH Air Hammer Based on Computational Fluid Dynamics |
| title_full | Optimization Research on the Performance of the RC-DTH Air Hammer Based on Computational Fluid Dynamics |
| title_fullStr | Optimization Research on the Performance of the RC-DTH Air Hammer Based on Computational Fluid Dynamics |
| title_full_unstemmed | Optimization Research on the Performance of the RC-DTH Air Hammer Based on Computational Fluid Dynamics |
| title_short | Optimization Research on the Performance of the RC-DTH Air Hammer Based on Computational Fluid Dynamics |
| title_sort | optimization research on the performance of the rc dth air hammer based on computational fluid dynamics |
| topic | RC-DTH air hammer continuous sampling CFD impact performance stroke |
| url | https://www.mdpi.com/2076-3417/15/2/740 |
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