CAJ | 학술논문

为进一步深入研究气凝胶纳米隔热材料的导热性能，在考虑气凝胶固体纳米颗粒尺寸非均匀分布的基础上，建立了SiO 2气凝胶气固耦合导热计算模型。纳米颗粒的导热系数采用格子波尔兹曼法数值模拟。基于建立的结构模型，研究分析了密度、孔隙率及颗粒尺寸非均匀分布等因素对气凝胶气固耦合导热特性的影响。
위진일보심입연구기응효납미격열재료적도열성능，재고필기응효고체납미과립척촌비균균분포적기출상，건립료SiO 2기응효기고우합도열계산모형。납미과립적도열계수채용격자파이자만법수치모의。기우건립적결구모형，연구분석료밀도、공극솔급과립척촌비균균분포등인소대기응효기고우합도열특성적영향。
In order to further investigate the heat conduction performance of aerogel nano-insulation material, this paper propose calculational model for solid and gas combined conduction in which the non-uniformity distri-bution of solid nanograin was taken into account.The thermal conductivity of aerogel nanograin was simulated using Lattice Boltzmann method.Based on the proposed structure model,the effects of density,side of struc-ture and non-uniformity distribution of solid nanograin on the coupled thermal performance of aerogel were in-vestigated.