Finite Element Simulation of the Coupled Heat-Fluid Transfer Problem with Phase Change in Frozen Soil

2012 ◽  
Author(s):  
Lina Guo ◽  
Tongchun Li ◽  
Zhiwei Niu
Keyword(s):  
Finite Element ◽  
Phase Change ◽  
Finite Element Simulation ◽  
Transfer Problem ◽  
Frozen Soil ◽  
Element Simulation ◽  
Fluid Transfer

3-D Finite Element Simulation of a Phase-change Random Access Memory Cell with a Self-insulated Structure

2008 ◽  
Vol 1108 ◽  
Author(s):  
Ke Sun ◽  
Wen Feng ◽  
Jae Young Lee ◽  
Biyun Li ◽  
Ya-Hong Xie
Keyword(s):  
Finite Element ◽  
Phase Change ◽  
Finite Element Simulation ◽  
Thermal Efficiency ◽  
Proximity Effect ◽  
Random Access ◽  
Memory Cell ◽  
Random Access Memory ◽  
Access Memory ◽  
Element Simulation

AbstractIn this paper, we proposed a phase-change random access memory (PCRAM) cell with a self-insulated structure (SIS), which is expected to have better thermal efficiency than the conventional structures. 3-D finite element simulation is used to study the most power consuming RESET process for both SIS and conventional normal bottom contact (NBC) cells driven by a MOSFET. Instead of programming current, power consumption is investigated to give a more fundamental comparison between the two structures. Thermal proximity effect for both kinds of cells is directly analyzed by simulating a 3×3 device array. The potential slow-quenching issue of SIS is also discussed.

Investigation of thermal properties of spacer fabrics with phase changing material by finite element model and experiment

2020 ◽  
Vol 90 (15-16) ◽  
pp. 1837-1850 ◽  
Author(s):  
Rimantas Barauskas ◽  
Audrone Sankauskaite ◽  
Vitalija Rubeziene ◽  
Ausra Gadeikyte ◽  
Virginija Skurkyte-Papieviene ◽  
...  
Keyword(s):  
Finite Element ◽  
Phase Change ◽  
Specific Heat ◽  
Finite Element Simulation ◽  
Phase Change Material ◽  
Phase Change Materials ◽  
Experimental Results ◽  
Finite Element Models ◽  
Element Simulation ◽  
Change Material

This study presents the developed computational finite element models for transient heat transfer analysis in fabrics enriched by phase change materials along with efforts to provide validation on the basis of obtained experimental results. The environment-friendly butyl stearate is used as a phase change material. Its melting/heating absorption takes place in temperature range from 19℃ to 34℃, and the solidification/heat release occurs from 34℃ to 19℃. An important aspect in this analysis is the investigation of appropriateness of the material samples dimensions selected for effective heat capacity against temperature measurements. For this purpose, we used the combined experimental and finite element simulation-based analysis. A similar computational procedure enabled us to estimate the effective latent specific heat relationship of the fabric with phase change materials coating. The direct usage of differential scanning calorimetry (DSC) measurement-based specific heat relationships against temperature in the finite element models ensured good compliance of the computed results with the experiment. For validation of the developed computational models the infrared radiation heating-cooling experiments on fabrics with different deposits of a phase change material were performed. The noticeable influence of content of phase change materials for transient thermal behavior during heating-cooling cycles was determined. The experimental results have been compared against the finite element simulation results.

Sign in / Sign up

Export Citation Format

Share Document