Simulation Study of Thermal and Moisture Transfer of DoubleShell MicroNano Capsules Based on Interface Molecular Dynamics

Abstract

Abstract: Abstract： To further study the effect of building gypsum added with doubleshell micronanocapsules with phase changing materials on heat and moisture transfer in porous walls, a model of the coupled heat and moisture in porous material with phase changing micronanocapsules was proposed. The thermal parameters of capsule interface were given by using pair potential and multibody potential of interface molecular dynamics, and by taking into account the feature of phase changing micronancapsules from the outside to the inside in phase transition. Meanwhile, the hydrophilic nature of outside shell and the effect of gypsum porporsit on the coupled heat and moisture by water adsorbed/desorbed were considered, and the moisture parameter model of capsule interface was proposed. And computer software was utilized to solve the equation of the added or nonadded material to deal with the simulation and measured data. The results show that the model can be used to simulate the heat and moisture transfer process in porous wall with phase change capsules. Key words：

Key words: doubleshell micronanocapsules, porous gypsum material, interface dynamics, heat and moisture transfer, numerical simulation

CLC Number:

TU 599

SHANG Jianli,XIONG Lei,ZHANG Hao. Simulation Study of Thermal and Moisture Transfer of DoubleShell MicroNano Capsules Based on Interface Molecular Dynamics[J]. Journal of Shanghai Jiaotong University, 2016, 50(01): 47-51.

References

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