Effects of radiation heat transfer space non-uniformity of combustion chamber components on in-cylinder soot emission formation in diesel engine

2010 ◽  
Vol 53 (7) ◽  
pp. 1824-1832 ◽  
Author(s):  
JiZu Lü ◽  
MinLi Bai ◽  
XiaoJie Li
Keyword(s):  
Heat Transfer ◽  
Diesel Engine ◽  
Combustion Chamber ◽  
Radiation Heat Transfer ◽  
Soot Emission ◽  
Radiation Heat ◽  
Effects Of Radiation

Experimental study of radiation heat transfer coefficient of diffusion flames

2007 ◽  
Vol 29 (2) ◽  
pp. 98-104
Author(s):  
Bui Van Ga ◽  
Le Van Tuy ◽  
Huynh Ba Vang ◽  
Le Van Lu ◽  
Nguyen Ngoc Linh
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Transfer Coefficient ◽  
Diesel Engine ◽  
Transfer Coefficient ◽  
Combustion Chamber ◽  
Diffusion Flames ◽  
Radiation Heat Transfer ◽  
Radiation Heat ◽  
Coefficient Of Diffusion

Basing on analysis of flame pictures given by visioscope by two-color method, the paper presents evolution of radiation heat transfer coefficient \(\varepsilon_s\) of soot in diffusion flames in air, in furnace and in combustion chamber of Diesel engine. \(\varepsilon_s\) reaches respectively its maximal value of 0.15; 0.30 and 0.45 in regions of maximal soot fraction of the three above flames.

Numerical Study on Radiation Heat Transfer in Diesel Engine With 3D Unstructured Finite Volume Method

2013 ◽  
Author(s):  
Pingjian Ming ◽  
Yafei Jiao ◽  
Yongfeng Liu ◽  
Lirong Fu ◽  
Gongmin Liu ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Diesel Engine ◽  
Numerical Method ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Numerical Study ◽  
Radiation Heat Transfer ◽  
Radiation Heat ◽  
Volume Method ◽  
Unstructured Finite Volume Method

In this paper, a numerical method based on finite volume method for diesel engine is presented. The production of combustion is assumed to be a grey medium and the scatter of particle is neglected. In this paper the unstructured finite-volume method (UFVM) for radiation has been formulated and implemented in an in-house fluid flow solver GTEA. For its comparison and validation of the present FVM on unstructured grids, a test case with 3D complex geometries is chosen, which was used by S. W. Baek et.al.[1]. The results obtained by the presented FVM agree well with the exact solutions. Radiation heat transfer in TBD620 diesel engines is studied with present numerical method. It is shown that the radiation has little effect on average pressure and temperature, but it changes the temperature distribution in cylinder.

scholarly journals Comparison of soot radiation in diesel flame given by mathematical model and by experimental data

2007 ◽  
Vol 29 (3) ◽  
pp. 293-301
Author(s):  
Bui Van Ga ◽  
Tran Van Nam ◽  
Nguyen Ngoc Linh
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Mathematical Model ◽  
Combustion Chamber ◽  
Engine Speed ◽  
Soot Formation ◽  
Radiation Heat Transfer ◽  
Formation Model ◽  
Radiation Heat ◽  
Maximum Value

An integral unidirectional model is established to calculate radiation heat transfer of Diesel flame in the open air and in combustion chamber of engine. Based on the temperature and soot fraction given by the flamlet theory and soot formation model of Tesner-Magnussen, radiation of soot particulate cloud at different positions of flame is determined and compared with experimental data obtained by the two-color method.The results show that the radiation given by the model is 203 lower than that produced by experiments on the stationary flame in open air. Soot radiation intensity in the Diesel engine increases in function of load and engine speed regimes and its maximum value (about 2000 kW/m2) is reached when the highest pressure is attained in combustion chamber.

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