A review on thermal and CFD analysis of 3 different piston bowl geometry’s

Varma, Potturi S Prakash; Subbaiah, K. Venkata

doi:10.1016/j.matpr.2020.08.018

Cited by 5 publications

(4 citation statements)

References 24 publications

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“…Not only injection parameters and/or other variables but piston bowl shape could also have an impact on engine outcomes. When compared to an open-piston bowl form, computational fluid dynamics (CFD) simulations show improved flow field characteristics during a compression stroke [78]. As a result, the piston bowl shape has a significant impact on swirl, squish, and turbulence in diesel engines [79].…”

Section: Modification In Piston-bowl Geometry or Combustion Chamber G...mentioning

confidence: 99%

Effect of modifying bowl geometry for IC engine fueled with diesel and Biofuels - Review

PATHAK,

PATEL

2024

Journal of Thermal Engineering

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Bio-fuels are one of the most prominent, emerging, and promising fuels, which are aimed to replace diesel in the next decade. Though bio-fuels may not give the same performance as conventional diesel due to certain issues related to both technical and economic aspects, this fact leads to the need for alterations that are supposed to incorporate either changes in the shape of the combustion chamber or other critical factors that affect the performance of the engine. The shape of the top surface, which is known as the "bowl," in the piston plays a major role, and any slight modification in that shape leads to amplified effects on various combustion, emission, and performance parameters. This article shows the valid reason for accepting bio-fuels as fuel for CI engines by considering outcomes derived from experiments and numerical analysis with changes in the shape of the piston bowl. The results obtained are based on the attainment of various parameters, which leads to higher turbulence velocity distribution, better mixture fraction values, and lower soot formation distribution that can be obtained by modifying the shape of bowl. The pressure, temperature and heat release in the combustion chamber found to be changed due to the modification in bowl geometry.

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Section: Modification In Piston-bowl Geometry or Combustion Chamber G...mentioning

confidence: 99%

Effect of modifying bowl geometry for IC engine fueled with diesel and Biofuels - Review

PATHAK,

PATEL

2024

Journal of Thermal Engineering

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“…Radiant heat transfer accounts for a very modest percentage of total heat transfer. Observing and studying the literature help to determine the most of the boundary parameters of each piston surface [10,13]. In order to analyse heat transfer in the piston, the fundamental methodology steady-state convection is followed in the entire work.…”

Section: Aluminum Piston With Various Alloyingmentioning

confidence: 99%

Effect of Alloying Elements and Ceramic Coating on the Surface Temperature of an Aluminum Piston in a Diesel Engine

Vengatesan

Yadav

Varuvel

2022

Journal of Nanomaterials

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The engine piston is subjected to very high temperature during the combustion process, and it is very difficult to control the stability of the geometry at elevated temperature. The stability of the engine piston was analysed by finite element method with steady-state conditions for three different types of approach to control it, where the influence of the alloying element of aluminum piston, influence of surface coating, and its impact on the thickness variation followed by the influence of holes on the coating surface have been analysed in detail. It is observed that the coating with holes shows good agreement with requirement compared to the influence of the alloying element and coated piston. The conduction mode of heat transfer is controlled, and also, the heat transfer to the adjacent components is facilitated by holes on the coated piston.

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“…With the accumulation of time and load, the phase movement eventually leads to qualitative changes (macroscopic damage) from quantitative changes (phase movement) and causes the fatigue failure of the material. With the deepening of theoretical research and the development of various hardware and software facilities, scholars have proposed many energy-based methods for predicting the fatigue life, and these fatigue failure criteria can be expressed as Equation (2).…”

Section: Overviewmentioning

confidence: 99%

“…Results show that Alcoa Delt alloy is the best selection alloy for pistons. Potturi S. Prakash Varma et al [ 2 ] use the computational fluid dynamics method to analyze the influence of different bowl geometry of piston on its combustion and soot character. At the end of the article, the authors come up with the developing trend about engine combustion and exhaust pollution.…”

Section: Introductionmentioning

confidence: 99%

Creep–Fatigue Experiment and Life Prediction Study of Piston 2A80 Aluminum Alloy

Dong¹,

Liu²,

Liu³

et al. 2021

Materials

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In order to improve the reliability and service life of vehicle and diesel engine, the fatigue life prediction of the piston in a heavy diesel engine was studied by finite element analysis of piston, experiment data of aluminum alloy, fatigue life model based on energy dissipation criteria, and machine learning algorithm. First, the finite element method was used to calculate and analyze the temperature field, thermal stress field, and thermal–mechanical coupling stress field of the piston, and determine the area of heavy thermal and mechanical load that will affect the fatigue life of the piston. Second, based on the results of finite element calculation, the creep–fatigue experiment of 2A80 aluminum alloy was carried out, and the cyclic response characteristics of the material under different loading conditions were obtained. Third, the fatigue life prediction models based on energy dissipation criterion and twin support vector regression are proposed. Then, the accuracy of the two models was verified using experiment data. The results show that the model based on the twin support vector regression is more accurate for predicting the material properties of aluminum alloy. Based on the established life prediction model, the fatigue life of pistons under actual service conditions is predicted. The calculation results show that the minimum fatigue life of the piston under plain condition is 2113.60 h, and the fatigue life under 5000 m altitude condition is 1425.70 h.

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A review on thermal and CFD analysis of 3 different piston bowl geometry’s

Cited by 5 publications

References 24 publications

Effect of modifying bowl geometry for IC engine fueled with diesel and Biofuels - Review

Effect of modifying bowl geometry for IC engine fueled with diesel and Biofuels - Review

Effect of Alloying Elements and Ceramic Coating on the Surface Temperature of an Aluminum Piston in a Diesel Engine

Creep–Fatigue Experiment and Life Prediction Study of Piston 2A80 Aluminum Alloy

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