Thermal Map of an IC Engine via Conjugate Heat Transfer: Validation and Test Data Correlation

Iqbal, Owais; Arora, Kunal; Sanka, Manyam

doi:10.4271/2014-01-1180

Cited by 24 publications

(8 citation statements)

References 12 publications

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“…Understanding heat transfer becomes vital in order to comprehend such systems [8], [9]. Engine components need to be created to hold up against heats, so it works to identify the temperature level circulation of the liquid exposed surfaces, which is experimentally made complex as well as invasive [10], [11]. It is essential in premixed air-fuel fuel engines to figure out hot areas that might cause very early ignition and auto-ignition triggering in irregular combustion.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of the Heat Transfer in a Piston

Muhammad

Haruna²

2020

JMMST

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The gas expansion process that takes place in a piston cylinder assembly have been used in numerous applications. However, the time-dependent process of heat transfer is still not fully apprehended as the expansion processes are complex and difficult due to the unsteady property of the turbulent flow process. Internal combustion Engines(ICE) designs are conducted with the aim of achieving higher efficiency in the thermal characteristics. To optimize these designs, numerical simulations are conducted. However, modelling of the process in terms of heat transfer and combustion is complex and challenging. For a designer to understand, calculate and quantify the thermal stresses and heat losses at different sections of the structure, understanding the piston-cylinder wall is needed. This study carried out a numerical simulations based on Finite Element Method (FEM) to investigatethe stresses in the piston, and temperature after loading. Appropriate boundary conditions were set on different surfaces for FE model. The study includes the effects of the thermal conductivity of the material of piston, cylinder wall, and connecting rod. Results show the maximum Von-misses stress occurs on the piston head with a value of 3486. 1MPa. The maximum temperature of the piston head and cylinder wall stands at 68.252 and 42.704 degree Celsius respectively.

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Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of the Heat Transfer in a Piston

Muhammad

Haruna²

2020

JMMST

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“…Conjugate Heat Transfer (CHT) solves the coupled heat transfer between fluid and solid domains. Recently, CHT has been applied to engine modeling in conjunction with RANS turbulence models [27][28][29][30][31][32][33]. Three typical CHT modeling approaches are as follows.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies only considered the coupling of the in-cylinder gas and solid components [34,35]. Or, CHT can be used to simulate the heat transfer between the engine solid components and the in-cylinder flow, while the liquid cooling jacket is simulated using CFD [28,31,33]. The CFD and CHT domains are coupled by the resulting wall temperature from the CHT simulation, and the heat transfer coefficient and fluid temperature from the CFD calculation.…”

Section: Introductionmentioning

confidence: 99%

“…They were able to predict heat rejection to the coolant within 3% error. Iqbal et al [31] were able to predict temperatures within 10% of the experimental measurement at several locations using a CHT model for three engine load conditions. Wu et al [32] found that the resulting spatially varying temperatures significantly influence the predicted velocity field of a Gasoline Direct Injection (GDI) engine.…”

Section: Introductionmentioning

confidence: 99%

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Large Eddy Simulations with Conjugate Heat Transfer (CHT) modeling of Internal Combustion Engines (ICEs)

Keum

Sick

2019

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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In this study, the effects of the thermal boundary conditions at the engine walls on the predictions of Large-Eddy Simulations (LES) of a motored Internal Combustion Engine (ICE) were examined. Two thermal boundary condition cases were simulated. One case used a fixed, uniform wall temperature, which is typically used in conventional LES modeling of ICEs. The second case utilized a Conjugate Heat Transfer (CHT) modeling approach to obtain temporally and spatially varying wall temperature. The CHT approach solves the coupled heat transfer problem between fluid and solid domains. The CHT case included the solid valves, piston, cylinder head, cylinder liner, valve seats, and spark plug geometries. The simulations were validated with measured bulk flow, near-wall flow, surface temperature, and surface heat flux. The LES quality of both simulations was also discussed. The CHT results show substantial spatial, temporal, and cyclic variability of the wall heat transfer. The surface temperature dynamics obtained from the CHT model compared well with measurements during the compression stroke, but the absolute magnitude was 5 K (or 1.4%) off and the prediction of the drop in temperature after top dead center suffered from temporal resolution limitations. Differences in the predicted flow and temperature fields between the uniform surface temperature and CHT simulations show the impact of the surface temperature on bulk behavior.

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“…Some experimental studies have validated the CHT calculations. In this regard, Iqbal et al [99] compared the temperatures obtained by means of the CHT simulations with experimental measurements from thermocouples located in specific sections in the intake and exhaust ports of the engine. Other authors [100] that modeled by CHT the heat losses throughout the cycle of a Diesel engine for marine applications have used similar techniques.…”

Section: D Conjugate Heat Transfermentioning

confidence: 99%

Modelling of Heat Losses through Coated Cylinder Walls and their Impact on Engine Performance

Cornejo¹,

Enrique²

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xx "If you can't fly then run, if you can't run then walk, if you can't walk then crawl, but whatever you do you have to keep moving forward." Martin Luther King Jr, United States xxi Sub-and superscripts CoO Referred to cooling oil conv Referred to convection xxxiii comb Referred to combustion eff Referred to effective area embed Referred to embedded exh Referred to exhaust ext Referred to external wall temperature ThO Referred to thermal oil in Referred to inlet ind Referred to indicated int Referred to intake opt Referred to optimal out Referred to outlet sat Referred to saturation tot Referred to total resistance vap Referred to vaporization vol Referred to volumetric

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Thermal Map of an IC Engine via Conjugate Heat Transfer: Validation and Test Data Correlation

Cited by 24 publications

References 12 publications

Finite Element Analysis of the Heat Transfer in a Piston

Finite Element Analysis of the Heat Transfer in a Piston

Large Eddy Simulations with Conjugate Heat Transfer (CHT) modeling of Internal Combustion Engines (ICEs)

Modelling of Heat Losses through Coated Cylinder Walls and their Impact on Engine Performance

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