eprintid: 3531
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/35/31
datestamp: 2023-11-09 15:51:47
lastmod: 2023-11-09 15:51:47
status_changed: 2023-11-09 15:47:02
type: article
metadata_visibility: show
creators_name: Hamada, K.I.
creators_name: Rahman, M.M.
creators_name: Aziz, A.R.A.
title: Parametric study of instantaneous heat transfer based on multidimensional model in direct-injection hydrogen-fueled engine
ispublished: pub
keywords: Arbitrary Lagrangian Eulerian; Equivalence ratios; Heat transfer correlation; Heterogeneous distributions; Hydrogen-fueled engines; Injection timing; Multi-dimensional model; Thermal field analysis, Direct injection; Engines; Flow fields; Heat transfer; Ignition; Mixtures; Speed, Hydrogen
note: cited By 14
abstract: 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 (� � 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. Copyright © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
date: 2013
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883809583&doi=10.1016%2fj.ijhydene.2013.07.051&partnerID=40&md5=f61c0ad451da9ccc96ebbb61a0e7a07a
id_number: 10.1016/j.ijhydene.2013.07.051
full_text_status: none
publication: International Journal of Hydrogen Energy
volume: 38
number: 28
pagerange: 12465-12480
refereed: TRUE
issn: 03603199
citation:   Hamada, K.I. and Rahman, M.M. and Aziz, A.R.A.  (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 03603199