基于组合边界条件的固体材料热扩散系数测试方法
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陈清华, 吴佳乐, 陆育, 季家东, 刘萍
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Testing Method for Thermal Diffusivity of Solid Materials Based on Combined Boundary Conditions
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CHEN Qinghua, WU Jiale, LU Yu, JI Jiadong, LIU Ping
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表1 PMMA热扩散系数计算结果
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Tab.1 Calculation results of thermal diffusion coefficient of PMMA
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| t/s | T/℃ | α×107/
(m2·s-1) | λ/
[W·(m·K)-1] | Δλ/% | | 测点1 | 测点2 | 测点3 | 测点4 | 测点5 | | 100 | 29.0 | 29.4 | 29.8 | 30.3 | 30.9 | 1.168 | 0.188 6 | 1.46 | | 120 | 30.0 | 30.6 | 30.9 | 31.5 | 32.3 | 1.229 | 0.198 4 | 3.66 | | 140 | 31.1 | 31.8 | 32.1 | 32.7 | 33.5 | 1.214 | 0.196 0 | 2.40 | | 160 | 32.1 | 32.8 | 33.2 | 33.7 | 34.5 | 1.206 | 0.194 7 | 1.72 | | 180 | 33.1 | 33.7 | 34.2 | 34.7 | 35.4 | 1.192 | 0.192 5 | 0.57 | | 200 | 33.9 | 34.6 | 35.1 | 35.5 | 36.2 | 1.163 | 0.187 8 | 1.88 | | 220 | 34.6 | 35.4 | 35.8 | 36.3 | 37.1 | 1.166 | 0.188 3 | 1.62 | | 240 | 35.3 | 36.1 | 36.5 | 37.0 | 37.7 | 1.155 | 0.186 5 | 2.56 | | 平均值 | | | | | | 1.186 | 0.191 6 | |
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