Equivalent Thermal Conductivity Model Based Full Scale Numerical Simulation for Thermal Management in Fan-Out Packages

2017 ◽  
Author(s):  
Ningyu Wang ◽  
Yudan Pi ◽  
Wei Wang ◽  
Yufeng Jin
Keyword(s):  
Thermal Conductivity ◽  
Numerical Simulation ◽  
Thermal Management ◽  
Full Scale ◽  
Equivalent Thermal Conductivity ◽  
Conductivity Model ◽  
Model Based ◽  
Thermal Conductivity Model

scholarly journals New Equivalent Thermal Conductivity Model for Size-Dependent Convection-Driven Melting of Spherically Encapsulated Phase Change Material

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4752
Author(s):  
Feng Hou ◽  
Shihao Cao ◽  
Hui Wang
Keyword(s):  
Thermal Conductivity ◽  
Phase Change ◽  
Effective Thermal Conductivity ◽  
Matrix Material ◽  
Melting Process ◽  
Melting Time ◽  
Equivalent Thermal Conductivity ◽  
Melting Front ◽  
Conductivity Model ◽  
Thermal Conductivity Model

Spherically encapsulated phase change materials (PCMs) are extensively incorporated into matrix material to form composite latent heat storage system for the purposes of saving energy, reducing PCM cost and decreasing space occupation. Although the melting of PCM sphere has been studied comprehensively by experimental and numerical methods, it is still challenging to quantitatively depict the contribution of complex natural convection (NC) to the melting process in a practically simple and acceptable way. To tackle this, a new effective thermal conductivity model is proposed in this work by focusing on the total melting time (TMT) of PCM, instead of tracking the complex evolution of solid–liquid interface. Firstly, the experiment and finite element simulation of the constrained and unconstrained meltings of paraffin sphere are conducted to provide a deep understanding of the NC-driven melting mechanism and exhibit the difference of melting process. Then the dependence of NC on the particle size and heating temperature is numerically investigated for the unconstrained melting which is closer to the real-life physics than the constrained melting. Subsequently, the contribution of NC to the TMT is approximately represented by a simple effective thermal conductivity correlation, through which the melting process of PCM is simplified to involve heat conduction only. The effectiveness of the equivalent thermal conductivity model is demonstrated by rigorous numerical analysis involving NC-driven melting. By addressing the TMT, the present correlation thoroughly avoids tracking the complex evolution of melting front and would bring great convenience to engineering applications.

A unified soil thermal conductivity model based on artificial neural network

2020 ◽  
Vol 155 ◽  
pp. 106414 ◽  
Author(s):  
Nan Zhang ◽  
Haifeng Zou ◽  
Limin Zhang ◽  
Anand J. Puppala ◽  
Songyu Liu ◽  
...  
Keyword(s):  
Neural Network ◽  
Thermal Conductivity ◽  
Artificial Neural Network ◽  
Soil Thermal Conductivity ◽  
Conductivity Model ◽  
Model Based ◽  
Thermal Conductivity Model ◽  
Artificial Neural

A THERMAL CONDUCTIVITY MODEL FOR RUBBERISED MORTAR

2018 ◽  
Author(s):  
S. Yang ◽  
N. Ukrainczyk ◽  
E. A. B. Koenders
Keyword(s):  
Thermal Conductivity ◽  
Conductivity Model ◽  
Thermal Conductivity Model

Recasting the Callaway and von Baeyer thermal conductivity model on defective oxide materials: the ZnO–In2O3 system as an example

2015 ◽  
Vol 17 (41) ◽  
pp. 27889-27893 ◽  
Author(s):  
Xin Liang
Keyword(s):  
Thermal Conductivity ◽  
Oxide Materials ◽  
Conductivity Model ◽  
System P ◽  
Thermal Conductivity Model

Recasting the Callaway and von Baeyer model for calculating the thermal conductivity of oxide materials containing defects of various dimensions, illustrated with the ZnO–In2O3 system.

scholarly journals A thermal conductivity model for U-­Si compounds

2017 ◽  
Author(s):  
Yongfeng Zhang ◽  
Anders David Ragnar Andersson
Keyword(s):  
Thermal Conductivity ◽  
Conductivity Model ◽  
Thermal Conductivity Model

Significantly enhanced and precisely modeled thermal conductivity in polyimide nanocomposites with chemically modified graphene via in situ polymerization and electrospinning-hot press technology

2018 ◽  
Vol 6 (12) ◽  
pp. 3004-3015 ◽  
Author(s):  
Yongqiang Guo ◽  
Genjiu Xu ◽  
Xutong Yang ◽  
Kunpeng Ruan ◽  
Tengbo Ma ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
In Situ Polymerization ◽  
Hot Press ◽  
Conductivity Model ◽  
Chemically Modified ◽  
Thermal Conductivity Model ◽  
Modified Graphene ◽  
Thermal Conductivities

Significantly improved thermal conductivities and a more accurate thermal conductivity model were achieved.

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