| Numerical Investigation and Analysis of Heat Transfer for Natural Gas Spray Wall-Impingement |
| Quangkhai Pham1, Avinash Kumar Agarwal2, Suhan Park3 |
1Department of Mechanical Engineering , Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
2Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
3School of Mechanical and Aerospace Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea |
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Received: October 17, 2024; Revised: January 6, 2025 Accepted: January 13, 2025. Published online: March 11, 2025. |
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| ABSTRACT |
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This study presents an experimental validation of numerical model for analyzing the influence of fuel injection strategies and impingement conditions on the flow field and heat transfer characteristics of natural gas impinging spray. The flow field, temperature loss, surface heat flux and heat transfer coefficient under different influencing factors were compared to find the optimal parameters. The optimal parameters are investigated under low injection pressures (PR < 10) according to the world harmonized transient cycle to obtain data. The results of numerical model showed that the highest injection pressure and wall temperature values can maximum enhance 50.9%, and 36.7%, respectively of heat flux surface and heat transfer coefficient. However, the increase in spray-to-wall plate distance and wall temperature drop the heat transfer 16.7%, and 21.1%, respectively during the spray wall impingement process. Owing to the influence on the flow field, the turbulence intensity is considered a primary source of helping to reduce the temperature loss and heat transfer as fuel impinges onto the wall temperature surface. Moreover, this numerical simulation model could also be used to determine the optimal parameters and important variables, which can play an important role in the design of gaseous fuel spray impingement. |
| Key Words:
Dual-fuel combustion · Impingement spray · Heat transfer · Wall temperature · Heat transfer coefficients |
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Corresponding Author.
Suhan Park , Email. 
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