Publications Internationales

Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/13

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Subject: search.filters.subject.Combustion

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Now showing 1 - 6 of 6
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    Development of a thermodynamic model for supercharged diesel engine performance and combustion characteristics study
    (Taylor and Francis Ltd, 2023) Nezlioui, Ferroudja; Benslimane, Abdelhakim; Hamtache, Brahim; Sahi, Adel; Lounici, Mohand Said; Sadaoui, Djamel
    Development of a model that allows performance and combustion characteristics for a supercharged diesel engine was the main objective sought by the present work. Thus, the developed model is used, to examine the impact of start combustion, combustion duration, compression ratio, and heat flux, as well as intake conditions such as pressure and temperature, on the combustion characteristics of the supercharged diesel. For this purpose, a one zone thermodynamic prediction model was adopted with Wiebe function for combustion sub-model. The heat transfer was correlated using Woschni correlation. A numerical simulation is developed considering the crankshaft angle as the independent variable. Validation of the computational code has been favorably evaluated using our experimental data. To give a more general aspect to the developed model, experimental data found in the literature, are also used for this purpose. The results show that the addition of a turbocharger increases low-speed airflow and hence fuel consumption. In addition, an increase in intake pressure contributes to the rise of the heat flux released during combustion, while an increase in intake temperature leads to a strong increase in combustion temperature. Moreover, an increase in the compression ratio leads in a remarkable increase in all parameters simultaneously. However, maximum combustion pressure limits must not be exceeded. This is because the pressure has an effect with the engine mechanical strength.
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    Combustion behavior of polypropylene/polyamide66/clay nanocomposites
    (John Wiley and Sons Ltd, 2017) Kouini, Benalia; Serier, Aicha
    The addition of treated nanoclay as the reinforcement agent modifies the melt behavior of PP/PA66 nanocomposites, but also profoundly decreases the burning rate of reinforced formulations. To modify the flammability of PP/PA66 nanocomposites, various amounts (0–6 wt%) of treated nanoclay were added to improve the fire performance of PP/PA66 nanocomposites. Horizontal flame test according UL94 was used to evaluate the fire performance of the reinforced formulations, and the results proved that the addition of more than 2 wt% treated nanoclay lead the improvements in flame retardancy through the reduced burning rate. The melt behavior of PP/PA66/Nanoclay nanocomposites was also investigated. It is proposed that, in the presence of clay, the combustion surface changed to a compact carbonaceous–silicate structure. When the clay content was 4–6 wt%, the layered silicates became enriched on part of the surface and formed an island-like structure; the islands displayed a loose cinder structure with much higher silicon content, in contrast to a surface with low silicon content in the surrounding polymers substrate. As the clay content continued to increase, the char covered most of the combustion surface and more clay accumulated on the burning surface. In addition, the clay particles promoted the formation of the carbonaceous–silicate structure. The melt behavior of the PP/PA66 nanocomposites was affected with increasing addition of clay
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    Combustion study of phoenicicole biomass in Algerian oasis using thermogravimetric analysis : deglet nour cultivar case
    (Springer, 2018) Bousdira, Khalida; Bousdira, Dina; Bekkouche, Sidi Mohammed El Amine; Yahiaoui, Fatma Zohra; Nouri, L’Hadi; Legrand, Jack
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    Combustion behavior of polypropylene/polyamide66/clay nanocomposites
    (Wiley, 2017) Benalia, Kouini; Serier
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    Performance, combustion and exhaust emissions characteristics investigation using Citrullus colocynthis L. biodiesel in DI diesel engine
    (Elsevier, 2017) Alloune, R.; Balistrou, Mourad; Awad, S.; Loubar, K.; Tazerout, M.
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    Towards improvement of natural gas-diesel dual fuel mode : an experimental investigation on performance and exhaust emissions
    (Elsevier, 2014) Lounici, Mohand Said; Loubar, Khaled; Tarabet, Lyes; Balistrou, Mourad; Niculescu, Dan-Catalin; Tazerout, Mohand