Parametric Study Of Instantaneous Heat Transfer Based on Multidimensional Model in Direct-Injection Hydrogen-Fueled Engine

This paper presents a parametric study on instantaneous heat transfer of a direct-injection hydrogen-fueled engine using a multidimensional model. A simplified single-step mechanism was considered for estimating the reaction rate of hydrogen oxidation. The modified wall-function was used for resolvi...

Full description

Bibliographic Details
Main Authors:	Hamada, Khalaf I., M. M., Rahman, A. Rashid, A. Aziz
Format:	Article
Language:	English
Published:	Elsevier Ltd 2013
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/6290/ http://umpir.ump.edu.my/id/eprint/6290/ http://umpir.ump.edu.my/id/eprint/6290/ http://umpir.ump.edu.my/id/eprint/6290/1/Parametric%20Study%20of%20Instantaneous%20Heat%20Transfer%20Based%20on%20Multidimensional%20Model%20in%20Direct-Injection%20Hydrogen-Fueled%20Engine.pdf

id	ump-6290
recordtype	eprints
spelling	ump-62902018-01-25T02:23:04Z http://umpir.ump.edu.my/id/eprint/6290/ Parametric Study Of Instantaneous Heat Transfer Based on Multidimensional Model in Direct-Injection Hydrogen-Fueled Engine Hamada, Khalaf I. M. M., Rahman A. Rashid, A. Aziz TJ Mechanical engineering and machinery This paper presents a parametric study on instantaneous heat transfer of a direct-injection hydrogen-fueled engine using a multidimensional model. A simplified single-step mechanism was considered for estimating the reaction rate of hydrogen oxidation. The modified wall-function was used for resolving the near-wall transport. An arbitrary Lagrangian–Eulerian algorithm was adopted for solving the governing equations. Experimental measurements were implemented to verify the developed model. They show that the instantaneous heat-transfer model is sufficiently accurate. The influence of engine speed, equivalence ratio, and the start of injection timing were investigated. The flow fields appeared to have greater size vectors and coarser distribution with an increase of engine speed. A heterogeneous distribution was obtained for an ultra-lean mixture condition (φ ≤ 0.5), which decreased with an increase of equivalence ratio. There was no pronounced influence of the start of injection on the flow field pattern and mixture homogeneity. Thermal field analysis was used to demonstrate trends in the instantaneous heat transfer. It was observed that there was a crucial distinction between the lean and ultra-lean mixtures as well as the engine speed. Furthermore, a non-uniform behavior was found for the impact of the equivalence ratio on temperature distribution. It is clear that the developed models are powerful tools for estimating the heat transfer of the hydrogen-fueled engine. The developed predictive correlation is highly accurate in predicting the heat transfer of the hydrogen-fueled engine, focusing on the equivalence ratio as a governing variable. Elsevier Ltd 2013 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/6290/1/Parametric%20Study%20of%20Instantaneous%20Heat%20Transfer%20Based%20on%20Multidimensional%20Model%20in%20Direct-Injection%20Hydrogen-Fueled%20Engine.pdf Hamada, Khalaf I. and M. M., Rahman and A. Rashid, A. Aziz (2013) Parametric Study Of Instantaneous Heat Transfer Based on Multidimensional Model in Direct-Injection Hydrogen-Fueled Engine. International Journal of Hydrogen Energy, 38 (28). pp. 12465-12480. ISSN 0360-3199 http://dx.doi.org/10.1016/j.ijhydene.2013.07.051 DOI: 10.1016/j.ijhydene.2013.07.051
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Hamada, Khalaf I. M. M., Rahman A. Rashid, A. Aziz Parametric Study Of Instantaneous Heat Transfer Based on Multidimensional Model in Direct-Injection Hydrogen-Fueled Engine
description	This paper presents a parametric study on instantaneous heat transfer of a direct-injection hydrogen-fueled engine using a multidimensional model. A simplified single-step mechanism was considered for estimating the reaction rate of hydrogen oxidation. The modified wall-function was used for resolving the near-wall transport. An arbitrary Lagrangian–Eulerian algorithm was adopted for solving the governing equations. Experimental measurements were implemented to verify the developed model. They show that the instantaneous heat-transfer model is sufficiently accurate. The influence of engine speed, equivalence ratio, and the start of injection timing were investigated. The flow fields appeared to have greater size vectors and coarser distribution with an increase of engine speed. A heterogeneous distribution was obtained for an ultra-lean mixture condition (φ ≤ 0.5), which decreased with an increase of equivalence ratio. There was no pronounced influence of the start of injection on the flow field pattern and mixture homogeneity. Thermal field analysis was used to demonstrate trends in the instantaneous heat transfer. It was observed that there was a crucial distinction between the lean and ultra-lean mixtures as well as the engine speed. Furthermore, a non-uniform behavior was found for the impact of the equivalence ratio on temperature distribution. It is clear that the developed models are powerful tools for estimating the heat transfer of the hydrogen-fueled engine. The developed predictive correlation is highly accurate in predicting the heat transfer of the hydrogen-fueled engine, focusing on the equivalence ratio as a governing variable.
format	Article
author	Hamada, Khalaf I. M. M., Rahman A. Rashid, A. Aziz
author_facet	Hamada, Khalaf I. M. M., Rahman A. Rashid, A. Aziz
author_sort	Hamada, Khalaf I.
title	Parametric Study Of Instantaneous Heat Transfer Based on Multidimensional Model in Direct-Injection Hydrogen-Fueled Engine
title_short	Parametric Study Of Instantaneous Heat Transfer Based on Multidimensional Model in Direct-Injection Hydrogen-Fueled Engine
title_full	Parametric Study Of Instantaneous Heat Transfer Based on Multidimensional Model in Direct-Injection Hydrogen-Fueled Engine
title_fullStr	Parametric Study Of Instantaneous Heat Transfer Based on Multidimensional Model in Direct-Injection Hydrogen-Fueled Engine
title_full_unstemmed	Parametric Study Of Instantaneous Heat Transfer Based on Multidimensional Model in Direct-Injection Hydrogen-Fueled Engine
title_sort	parametric study of instantaneous heat transfer based on multidimensional model in direct-injection hydrogen-fueled engine
publisher	Elsevier Ltd
publishDate	2013
url	http://umpir.ump.edu.my/id/eprint/6290/ http://umpir.ump.edu.my/id/eprint/6290/ http://umpir.ump.edu.my/id/eprint/6290/ http://umpir.ump.edu.my/id/eprint/6290/1/Parametric%20Study%20of%20Instantaneous%20Heat%20Transfer%20Based%20on%20Multidimensional%20Model%20in%20Direct-Injection%20Hydrogen-Fueled%20Engine.pdf
first_indexed	2023-09-18T22:01:55Z
last_indexed	2023-09-18T22:01:55Z
_version_	1777414455482646528

Parametric Study Of Instantaneous Heat Transfer Based on Multidimensional Model in Direct-Injection Hydrogen-Fueled Engine

Similar Items