Influence of Inlet Mass Flow Rates on Fluid Characteristics of Engine Exhaust Manifold
DOI:
https://doi.org/10.58915/aset.v3i2.1435Abstract
This study presents a comprehensive Computational Fluid Dynamics (CFD) analysis of internal flow behavior within an engine exhaust manifold under various operating conditions. The primary focus is on examining velocity and pressure distributions across different scenarios. The simulations explore the effects of varying inlet mass flow rates (0.004 m³/s, 0.006 m³/s, and 0.008 m³/s) using three turbulence models: k-ε, k-ω, and k-ω SST. The analysis provides detailed insights into complex flow patterns, including meshing strategies, boundary condition setups, and solver configurations, with particular attention to phenomena such as flow separation, recirculation, and turbulence. Parametric variations are thoroughly examined to assess how different turbulence models and mass flow rates influence critical parameters like pressure and velocity. The findings offer valuable insights into the manifold's flow dynamics, contributing to design enhancements to improve engine performance and reduce emissions.
Keywords:
Engine exhaust manifold, computational fluid dynamics, Simflow 4.0, internal flow, Turbulent modelReferences
Doppalapudi, A. T., Azad, A. K., & Khan, M. M. K. Combustion chamber modifications to improve diesel engine performance and reduce emissions: A review. Renewable and Sustainable Energy Reviews, vol 152, (2021) p. 111683.
Onorati, A., Ferrari, G., & D'Errico, G. Fluid dynamic modeling of the gas flow with chemical specie transport through the exhaust manifold of a four cylinder SI engine. SAE transactions, (1999) pp. 819-834.
Guan, B., Zhan, R., Lin, H., & Huang, Z. Review of the state-of-the-art of exhaust particulate filter technology in internal combustion engines. Journal of environmental management, vol 154, (2015) pp. 225-258.
Teja, M. A., Ayyappa, K., Katam, S., & Anusha, P. Analysis of exhaust manifold using computational fluid dynamics. Fluid Mech Open Acc, vol 3, issue 1 (2016) p.1000129.
Zhang, X., & Romzek, M. Computational fluid dynamics (CFD) applications in vehicle exhaust system, SAE Technical Paper, (2008), No. 2008-01-0612.
Teja, M. A., Ayyappa, K., Katam, S., & Anusha, P. Analysis of exhaust manifold using computational fluid dynamics. Fluid Mech Open Acc, vol 3, issue 1 (2016) p.1000129.
Hopf, A., Bartsch, G., Krämer, F., & Weber, C. CFD topology and shape optimization for port development of integrated exhaust manifolds, SAE Technical Paper, (2017), No. 2017-01-1339.
Manohar, D. S., & Krishnaraj, J. Modeling and analysis of exhaust manifold using CFD. In IOP Conference Series: Materials Science and Engineering, IOP Publishing, vol 455, issue 1 (2018) p. 012132).
Nouhaila, O., & Hassane, M. Analyzing the Impact of Cracks on Exhaust Manifold Performance: A Computational Fluid Dynamics Study. International Journal of Heat & Technology, vol 42, issue 2 (2024).
Benek, G., & Ozsoysal, O. A. Influences of the dead end on the flow characteristics at the exhaust manifold of a marine diesel engine. Journal of Thermal Engineering, vol 7, issue 6 (2021) pp. 1519-1530.
Sadhasivam, C., Murugan, S., Vairamuthu, J., & Priyadharshini, S. M. Design and analysis of two-cylinder exhaust manifold with improved performance in CFD. Materials Today: Proceedings, vol 37, (2021) pp. 2141-2144.
Desai, A. R., Buradi, A., Gowthami, L., Praveena, B. A., Madhusudhan, A., & Bora, B. J. (2022, October). Computational Investigation of Engine Exhaust Manifold with Different Alternative Fuels By Using CFD. In 2022 IEEE 2nd Mysore Sub Section International Conference (MysuruCon), IEEE, (2022) pp. 1-6.
Venkatesan, S. P., Ganesan, S., Devaraj, R., & Hemanandh, J. Design and analysis of exhaust manifold of the spark ignition engine for emission reduction. International Journal of Ambient Energy, vol 41, issue 6 (2020) pp. 659-664.
Bral, P., Tripathi, J. P., Dewangan, S., & Mahato, A. C. CFD analysis of an exhaust manifold for emission reduction. Materials Today: Proceedings, vol 63, (2022) pp. 354-361.
Nouhaila, O., Hassane, M., Scutaru, M. L., & Jelenschi, L. On the Accuracy of Turbulence Model Simulations of the Exhaust Manifold. Applied Sciences, vol 14, issue 12 (2024) p. 5262.
Tang, Y. P. Effects of Race Car's Speed on the Aerodynamic Aspect Using Computational Fluid Dynamics Analysis. Advanced and Sustainable Technologies (ASET), vol 3, issue 1 (2024) pp. 54-61.
Tan, K. M. Computational Fluid Dynamics Analysis on the Road Bike Using Different Flow Models under Extreme Inlet Velocity. Advanced and Sustainable Technologies (ASET), vol 3, issue 1 (2024) pp. 62-70.
Turangan, M. U. R. Numerical Simulation of the Effect of Flow Velocity and Inlet Position on the Pressure Drop in the Exhaust Manifold. Indonesian Journal of Maritime Technology, vol 1, issue 1 (2023) pp. 1-7.
