CFD-Based Numerical Simulation on the Combined Spraying Dust Suppression Device
Spraying for dust suppression is a conventional technological means for industrial dust control. The traditional spraying technique shows a few shortcomings, including low dust suppression efficiency, great water consumption, and failure in far-distance dust suppression. This study proposed a novel...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/13/10/1543 |
| _version_ | 1797475446560915456 |
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| author | Shitu Mo Pengfei Wang Runze Gao Shiqiang Chen Shilin Li |
| author_facet | Shitu Mo Pengfei Wang Runze Gao Shiqiang Chen Shilin Li |
| author_sort | Shitu Mo |
| collection | DOAJ |
| description | Spraying for dust suppression is a conventional technological means for industrial dust control. The traditional spraying technique shows a few shortcomings, including low dust suppression efficiency, great water consumption, and failure in far-distance dust suppression. This study proposed a novel combined spraying dust suppression device and established the related physical model and mathematical model. Using the CFD numerical simulation method, the basic characteristics of the airflow field and spray field around the device and the related influencing factors were investigated in depth. Results showed that the Coanda effect appeared near the wall surface in the air duct when the combined spraying dust suppression device was operated. Under this effect, negative pressure formed at the center of the device. The velocity of the combined device showed a symmetrical distribution and decayed steadily downward from the outlet of the device. An obvious stratification can be observed in the spray field. The mean droplet size first increased and then decreased along the airflow direction. Meanwhile, the effects of the air supply pressure and water supply pressure were examined. On the one hand, the velocity of the combined spraying dust suppression device and the spraying range were in direct proportion with the air supply pressure. As the air supply pressure increased, the droplet size first increased and then decreased. On the other hand, increasing the water supply pressure imposed almost no effect on the airflow field of the combined spraying dust suppression device but can reduce the droplet size and enhance the spraying range. |
| first_indexed | 2024-03-09T20:45:12Z |
| format | Article |
| id | doaj.art-e8aefb6eb4a0413b9dc49e83d856fd57 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-09T20:45:12Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-e8aefb6eb4a0413b9dc49e83d856fd572023-11-23T22:49:48ZengMDPI AGAtmosphere2073-44332022-09-011310154310.3390/atmos13101543CFD-Based Numerical Simulation on the Combined Spraying Dust Suppression DeviceShitu Mo0Pengfei Wang1Runze Gao2Shiqiang Chen3Shilin Li4School of Resource, Environment & Safety Engineering, Hunan University of Science & Technology, Xiangtan 411201, ChinaSchool of Resource, Environment & Safety Engineering, Hunan University of Science & Technology, Xiangtan 411201, ChinaSchool of Resource, Environment & Safety Engineering, Hunan University of Science & Technology, Xiangtan 411201, ChinaSchool of Resource, Environment & Safety Engineering, Hunan University of Science & Technology, Xiangtan 411201, ChinaSchool of Resource, Environment & Safety Engineering, Hunan University of Science & Technology, Xiangtan 411201, ChinaSpraying for dust suppression is a conventional technological means for industrial dust control. The traditional spraying technique shows a few shortcomings, including low dust suppression efficiency, great water consumption, and failure in far-distance dust suppression. This study proposed a novel combined spraying dust suppression device and established the related physical model and mathematical model. Using the CFD numerical simulation method, the basic characteristics of the airflow field and spray field around the device and the related influencing factors were investigated in depth. Results showed that the Coanda effect appeared near the wall surface in the air duct when the combined spraying dust suppression device was operated. Under this effect, negative pressure formed at the center of the device. The velocity of the combined device showed a symmetrical distribution and decayed steadily downward from the outlet of the device. An obvious stratification can be observed in the spray field. The mean droplet size first increased and then decreased along the airflow direction. Meanwhile, the effects of the air supply pressure and water supply pressure were examined. On the one hand, the velocity of the combined spraying dust suppression device and the spraying range were in direct proportion with the air supply pressure. As the air supply pressure increased, the droplet size first increased and then decreased. On the other hand, increasing the water supply pressure imposed almost no effect on the airflow field of the combined spraying dust suppression device but can reduce the droplet size and enhance the spraying range.https://www.mdpi.com/2073-4433/13/10/1543combined spraying dust suppression devicespraying for dust suppressionnumerical simulationair supply pressurewater supply pressure |
| spellingShingle | Shitu Mo Pengfei Wang Runze Gao Shiqiang Chen Shilin Li CFD-Based Numerical Simulation on the Combined Spraying Dust Suppression Device Atmosphere combined spraying dust suppression device spraying for dust suppression numerical simulation air supply pressure water supply pressure |
| title | CFD-Based Numerical Simulation on the Combined Spraying Dust Suppression Device |
| title_full | CFD-Based Numerical Simulation on the Combined Spraying Dust Suppression Device |
| title_fullStr | CFD-Based Numerical Simulation on the Combined Spraying Dust Suppression Device |
| title_full_unstemmed | CFD-Based Numerical Simulation on the Combined Spraying Dust Suppression Device |
| title_short | CFD-Based Numerical Simulation on the Combined Spraying Dust Suppression Device |
| title_sort | cfd based numerical simulation on the combined spraying dust suppression device |
| topic | combined spraying dust suppression device spraying for dust suppression numerical simulation air supply pressure water supply pressure |
| url | https://www.mdpi.com/2073-4433/13/10/1543 |
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