Numerical analysis of heat flow in contact heat transfer

Wahid, Syed M. S.

doi:10.1016/s0017-9310(03)00320-x

Cited by 10 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…30 For macroscopic materials, heat transfer is impeded by interfacial roughness and a resulting small contact area. [31][32][33][34] For nanoscale materials, the efficiency of heat transfer is expected to also depend on atomiclevel properties such as the interfacial intermolecular potential and the structures and vibrational frequencies of the two components.…”

Section: Introductionmentioning

confidence: 99%

“…As a result of inhomogeneities at the interface and the interface's nanoscale attributes, the rate of heat transfer from the smaller to larger component is expected to be different than that for either of the components in a homogeneous macroscopic environment . For macroscopic materials, heat transfer is impeded by interfacial roughness and a resulting small contact area. − For nanoscale materials, the efficiency of heat transfer is expected to also depend on atomic-level properties such as the interfacial intermolecular potential and the structures and vibrational frequencies of the two components.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamics and Kinetics of Heat Transfer at the Interface of Model Diamond {111} Nanosurfaces

Mazyar

Hase

2005

J. Phys. Chem. A

View full text Add to dashboard Cite

A molecular dynamics simulation was performed to study the effect of an applied force on heat transfer at the interface of model diamond [111] nanosurfaces. The force was applied to a small, hot nanosurface at 800, 1000, or 1200 K brought into contact with a larger, colder nanosurface at 300 K. The relaxation of the initial nonequilibrium interfacial force occurs on a subpicosecond time scale, much shorter than that required for heat transfer. Heat transfer occurs with exponential kinetics and a rate constant that increases linearly with the interfacial force according to 7 x 10(-4) ps(-1)/nN. This rate constant only increases by at most 10% as the temperature of the hot surface is increased from 800 to 1200 K. Replacing the interfacial H-atoms on both surfaces by D atoms also has a very small effect on the heat transfer. However, if one nanosurface has H atoms on its interface and the other nanosurface's interface has D atoms, then there is a marked 25% decrease in the rate constant for heat transfer. Increasing the size of the hot surface, and, thus, the interfacial contact area, increases the rate of heat transfer but not the rate constant. For the same interfacial force, different anharmonic models for the nanosurfaces' potential energy function give the same heat transfer rate constant. The possibility of quantum effects for heat transfer across the diamond interface is considered.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamics and Kinetics of Heat Transfer at the Interface of Model Diamond {111} Nanosurfaces

Mazyar

Hase

2005

J. Phys. Chem. A

View full text Add to dashboard Cite

show abstract

“…Trujillo 和 Pappoff [112] 采用有限元网格分析了接触点几何结构对换热的影响. Wahid [113] 采用有限微分法对包含锥形台的圆柱接触连接进行了数值模拟, 重点讨论了气隙与固体触点的换热比率. Black 等人 [114] 也数值研究了圆柱连接的半径比、锥形角、气隙对热阻的影响.…”

Section: 弹塑性接触模型unclassified

接触热阻预测的研究综述

王¹,

赵²

2011

Sci. Sin.-Tech.

View full text Add to dashboard Cite

“…Between the contact surfaces, a gap having a shape of conical and that of circular were considered, and the thermal resistances were studied. Wahid (2003) numerically analyzed the heat flow of a cylinder having a conical gap. The numerical results were shown changing the angle of the gap and the thermal conductivity of gas in the gap.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Between Solid Surfaces in Contact Having a Relatively Large Gap (External Thermal Resistance of a Heat Pipe)

Koito¹,

Tsurumoto²,

Hatano³

et al. 2014

Frontiers in Heat Pipes

View full text Add to dashboard Cite

Experimental and numerical analyses are conducted to investigate the heat transfer characteristics of two rectangular rods in contact, where a relatively large gap is present. Sixteen types of wedge-shaped gaps having different sizes are investigated in the experiment. Using the thermal resistance network method, the temperature distribution is obtained numerically and the discussion is made on the heat transfer characteristics around the gap. It is confirmed that the constriction/spreading of heat flow inside the rods greatly affects the thermal resistance of the gap. Fairly good agreement is obtained between the experimental and the numerical results.

show abstract

Numerical analysis of heat flow in contact heat transfer

Cited by 10 publications

References 2 publications

Dynamics and Kinetics of Heat Transfer at the Interface of Model Diamond {111} Nanosurfaces

Dynamics and Kinetics of Heat Transfer at the Interface of Model Diamond {111} Nanosurfaces

接触热阻预测的研究综述

Heat Transfer Between Solid Surfaces in Contact Having a Relatively Large Gap (External Thermal Resistance of a Heat Pipe)

Contact Info

Product

Resources

About