University of Tasmania
Browse

File(s) under permanent embargo

A new approach for modeling coke particle emissions from large diesel engines using heavy Fuel oil

journal contribution
posted on 2023-05-19, 12:43 authored by Hentela, K, Kaario, O, Vikrambhai GaraniyaVikrambhai Garaniya, Goldsworthy, L, Larmi, M
In the present study, a new approach for modelling emissions of coke particles or cenospheres from large diesel engines using HFO (Heavy fuel oil) was studied. The model used is based on a multicomponent droplet mass transfer and properties model that uses a continuous thermodynamics approach to model the complex composition of the HFO fuel and the resulting evaporation behavior of the fuel droplets. Cenospheres are modelled as the residue left in the fuel droplets towards the end of the simulation. The mass-transfer and fuel properties models were implemented into a cylinder section model based on the Wärtsilä W20 engine in the CFD-code Star CD v.4.24. Different submodels and corresponding parameters were tuned to match experimental data of cylinder pressures available from Wärtsilä for the studied cases. The results obtained from the present model were compared to experimental results found in the literature. The performance of the model was found to be promising although conclusive validation of the model would require more detailed experimental results about cenosphere emissions from the specific case studied here. According to the results obtained from this model the emissions of cenospheres are a function of both operating conditions and fuel properties. While the droplet evaporation and properties models were used in this study to model cenosphere emissions, the approach could also be used to study the combustion behavior of HFO in a broader sense.

History

Publication title

SAE Technical Papers

Volume

2017

Article number

2381

Number

2381

Pagination

1-20

ISSN

0148-7191

Department/School

Australian Maritime College

Publisher

SAE Inc.

Place of publication

USA

Rights statement

Copyright 2017 SAE International

Repository Status

  • Restricted

Socio-economic Objectives

Environmentally sustainable transport activities not elsewhere classified

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC