Heat transfer across aluminum/stainless steel surfaces in periodic contact

Dodd, Nicholas; Moses, W. M.

doi:10.2514/6.1988-2646

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…Among the earliest were those of Moses et al [28] who were interested in the prediction of the periodic contact conductance. The contact time τc has a direct influence on the temperature distribution at the end of the separation part of the cycle, but the change in temperature distribution during contact is not significant; this was confirmed by Dodd et al [9]. Shojaefard et al [15] conducted an experimental study with a real seat-valve configuration for different engine speeds.…”

Section: Introductionmentioning

confidence: 80%

“…In Figure 3, the temperature field obtained at the end of the cycle in the two connected rods is compared to the experimental results obtained by Dodd and Moses [9]. The chosen materials in this study are, respectively, aluminum with a thermal conductivity of k = 166.51 W/m.C.…”

Section: Validation Of Modelmentioning

confidence: 99%

“…Additionally, these studies have provided valuable insights into the key factors that influence thermal contact conductance, such as surface roughness, pressure, and temperature. Furthermore, the studies by Dodd and Moses [9], Moses and Johnson [29], and Vick and Ozisik [45] have been conducted using similar materials and under similar conditions, making it easier to compare the results of the developed model to the experimental results. In addition to these well-known references, the model is also compared to experimental results from Tariq and Asif [44] and Parikh et al [31]. )…”

Section: Validation Of Modelmentioning

confidence: 99%

See 2 more Smart Citations

Study of the periodic thermal contact between exhaust valve and its seat in an internal combustion engine

Zemmouri¹,

Azzouz²,

Benchadli³

et al. 2023

Eksploatacja i Niezawodność – Maintenance and Reliability

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The focus of internal combustion engine development for urban vehicles is shifting towards reducing materials by making them lighter. In order to maintain thermal and flow levels, a model was developed to study the thermal behavior of valve seats during periodic contact, which can also help improve engine performance and fuel efficiency. The model, composed of two cylindrical bars in periodic contact, takes into account the evolution and topography of the contact surface. The model's performance was evaluated through various experimental studies and showed a maximum difference of 5.05% with experimental values, in good agreement with previous literature. The results showed that heat flux increases with increasing contact frequency and thermal diffusivity affects conductive transfer. This model can be used by manufacturers to evaluate cylinder head temperature and by the automotive industry to improve heat transfer in engines.

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Section: Introductionmentioning

confidence: 80%

Section: Validation Of Modelmentioning

confidence: 99%

Section: Validation Of Modelmentioning

confidence: 99%

See 1 more Smart Citation

Study of the periodic thermal contact between exhaust valve and its seat in an internal combustion engine

Zemmouri¹,

Azzouz²,

Benchadli³

et al. 2023

Eksploatacja i Niezawodność – Maintenance and Reliability

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Experimental Aspects

Madhusudana¹

2013

Mechanical Engineering Series

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Experimental Techniques for Thermal Contact Resistance Measurements

Fletcher¹

1993

Experimental Heat Transfer, Fluid Mechanics and Thermodynamics 1993

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A number of different experimental techniques have been used to determine the thermal resistance of materials in contact, depending upon specific test requirements. These techniques and associated experimental facilities are reviewed, including the traditional cut-bar vertical-column test facilities, and more specialized facilities and techniques for measurement of the thermal contact resistance of such configurations or contacts as bolted joints, periodically contacting surfaces, full and partial scale component models, and analog techniques.Experimental thermal contact resistance data are presented and compared for selected categories of materials in contact including similar metallic junctions, junctions with interstitial fluids or fillers, and metallic junctions with metallic and non-metallic surface coatings. These experimental results demonstrate that the characteristics of thermal contact resistance may be used to thermally enhance a junction between materials, or thermally isolate a junction, depending upon thermal design requirements.For the second thickness of sample material or coating, the equations are < « -2 < + |

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Heat transfer across aluminum/stainless steel surfaces in periodic contact

Cited by 5 publications

References 9 publications

Study of the periodic thermal contact between exhaust valve and its seat in an internal combustion engine

Study of the periodic thermal contact between exhaust valve and its seat in an internal combustion engine

Experimental Aspects

Experimental Techniques for Thermal Contact Resistance Measurements

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