Validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for H2-biodiesel dual-fuel engines with cooled EGR

The supercharging centrifugal compressor with a vaneless diffuser is a key element in diesel powertrains that has not been comprehensively modelled using explainable mathematical trends. This study thus develops an analytical model for this type of compressors for hybrid H2-Biodiesel dual-fuel engin...

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Main Authors:	Elmoselhy, Salah A.M., Faris, Waleed Fekry, Rakha, Hesham A.
Format:	Article
Language:	English English English
Published:	Elsevier Ltd 2017
Subjects:	TJ163.13 Power resources
Online Access:	http://irep.iium.edu.my/63098/ http://irep.iium.edu.my/63098/ http://irep.iium.edu.my/63098/ http://irep.iium.edu.my/63098/1/63098_Validated%20analytical%20modelling%20of%20supercharging_article.pdf http://irep.iium.edu.my/63098/2/63098_Validated%20analytical%20modelling%20of%20supercharging_scopus.pdf http://irep.iium.edu.my/63098/13/63038_Validated%20analytical%20modelling%20of%20supercharging.pdf

id	iium-63098
recordtype	eprints
spelling	iium-630982018-06-21T01:25:38Z http://irep.iium.edu.my/63098/ Validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for H2-biodiesel dual-fuel engines with cooled EGR Elmoselhy, Salah A.M. Faris, Waleed Fekry Rakha, Hesham A. TJ163.13 Power resources The supercharging centrifugal compressor with a vaneless diffuser is a key element in diesel powertrains that has not been comprehensively modelled using explainable mathematical trends. This study thus develops an analytical model for this type of compressors for hybrid H2-Biodiesel dual-fuel engines with cooled EGR. Specifically, for this proposed type of compression ignition system, the study develops an analytical model of the velocities at the exit of impeller of the supercharging compressor. In addition, a sensitivity analysis is conducted on the developed models of the total power required to drive the compressor and its mechanical efficiency. The developed models have been validated using case studies that are based on field data gathered experimentally. Furthermore, a modified model of the Stanitz's slip factor is presented for radial blades accounting for the Coriolis circulation, boundary layer effect, and blade thickness. The modified Stanitz's slip factor provides better accuracy of matching the experimental results with relative error of 1%. The relative error with respect to the parameters of the velocities at the impeller and the analytical model of the power required to drive the rotor of the compressor is 7%. In addition, the relative error with respect to the model of the mechanical efficiency of the compressor is 10%. These relative errors are of an order of magnitude of deviation that is comparable with that of widely recognized models in the field of vehicle powertrain modelling such as the CMEM and GT-Power. These developed models follow from the principles of physics so that they are widely valid models. Having addressed and corrected flaws in corresponding models presented in key references in this research area, these developed models can help more effectively evaluate the power input to this type of compressors and thus the fuel consumption reducing the environmental foot-print thereof. Elsevier Ltd 2017-10-26 Article PeerReviewed application/pdf en http://irep.iium.edu.my/63098/1/63098_Validated%20analytical%20modelling%20of%20supercharging_article.pdf application/pdf en http://irep.iium.edu.my/63098/2/63098_Validated%20analytical%20modelling%20of%20supercharging_scopus.pdf application/pdf en http://irep.iium.edu.my/63098/13/63038_Validated%20analytical%20modelling%20of%20supercharging.pdf Elmoselhy, Salah A.M. and Faris, Waleed Fekry and Rakha, Hesham A. (2017) Validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for H2-biodiesel dual-fuel engines with cooled EGR. International Journal of Hydrogen Energy, 42 (43). pp. 26771-26786. ISSN 0360-3199 https://www.sciencedirect.com/science/article/pii/S0360319917333967 10.1016/j.ijhydene.2017.08.125
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English English
topic	TJ163.13 Power resources
spellingShingle	TJ163.13 Power resources Elmoselhy, Salah A.M. Faris, Waleed Fekry Rakha, Hesham A. Validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for H2-biodiesel dual-fuel engines with cooled EGR
description	The supercharging centrifugal compressor with a vaneless diffuser is a key element in diesel powertrains that has not been comprehensively modelled using explainable mathematical trends. This study thus develops an analytical model for this type of compressors for hybrid H2-Biodiesel dual-fuel engines with cooled EGR. Specifically, for this proposed type of compression ignition system, the study develops an analytical model of the velocities at the exit of impeller of the supercharging compressor. In addition, a sensitivity analysis is conducted on the developed models of the total power required to drive the compressor and its mechanical efficiency. The developed models have been validated using case studies that are based on field data gathered experimentally. Furthermore, a modified model of the Stanitz's slip factor is presented for radial blades accounting for the Coriolis circulation, boundary layer effect, and blade thickness. The modified Stanitz's slip factor provides better accuracy of matching the experimental results with relative error of 1%. The relative error with respect to the parameters of the velocities at the impeller and the analytical model of the power required to drive the rotor of the compressor is 7%. In addition, the relative error with respect to the model of the mechanical efficiency of the compressor is 10%. These relative errors are of an order of magnitude of deviation that is comparable with that of widely recognized models in the field of vehicle powertrain modelling such as the CMEM and GT-Power. These developed models follow from the principles of physics so that they are widely valid models. Having addressed and corrected flaws in corresponding models presented in key references in this research area, these developed models can help more effectively evaluate the power input to this type of compressors and thus the fuel consumption reducing the environmental foot-print thereof.
format	Article
author	Elmoselhy, Salah A.M. Faris, Waleed Fekry Rakha, Hesham A.
author_facet	Elmoselhy, Salah A.M. Faris, Waleed Fekry Rakha, Hesham A.
author_sort	Elmoselhy, Salah A.M.
title	Validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for H2-biodiesel dual-fuel engines with cooled EGR
title_short	Validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for H2-biodiesel dual-fuel engines with cooled EGR
title_full	Validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for H2-biodiesel dual-fuel engines with cooled EGR
title_fullStr	Validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for H2-biodiesel dual-fuel engines with cooled EGR
title_full_unstemmed	Validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for H2-biodiesel dual-fuel engines with cooled EGR
title_sort	validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for h2-biodiesel dual-fuel engines with cooled egr
publisher	Elsevier Ltd
publishDate	2017
url	http://irep.iium.edu.my/63098/ http://irep.iium.edu.my/63098/ http://irep.iium.edu.my/63098/ http://irep.iium.edu.my/63098/1/63098_Validated%20analytical%20modelling%20of%20supercharging_article.pdf http://irep.iium.edu.my/63098/2/63098_Validated%20analytical%20modelling%20of%20supercharging_scopus.pdf http://irep.iium.edu.my/63098/13/63038_Validated%20analytical%20modelling%20of%20supercharging.pdf
first_indexed	2023-09-18T21:29:30Z
last_indexed	2023-09-18T21:29:30Z
_version_	1777412416109281280

Validated analytical modelling of supercharging centrifugal compressors with vaneless diffusers for H2-biodiesel dual-fuel engines with cooled EGR

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