CAJ | 학술논문

在室温和常压下采用激光诱导光栅技术实验测量不同体积分数的磁性液体的热扩散系数,体积分数分别为5%,6%,7%,8%,9%和10%。由于在磁性液体薄片上的升温非常小以及毫秒级的测量时间,自由对流所产生的影响可以忽略不计。用激光诱导光栅技术测的数据与已有文献中的实验数据比较吻合,从而说明该技术在磁性液体的热扩散测量上是可行的。
재실온화상압하채용격광유도광책기술실험측량불동체적분수적자성액체적열확산계수,체적분수분별위5%,6%,7%,8%,9%화10%。유우재자성액체박편상적승온비상소이급호초급적측량시간,자유대류소산생적영향가이홀략불계。용격광유도광책기술측적수거여이유문헌중적실험수거비교문합,종이설명해기술재자성액체적열확산측량상시가행적。
In this report, the experimental thermal diffusivity data are presented for different concentrations of ferrofluids. The thermal diffusivity measurements are conducted using a laser-induced thermal grating technique at room temperature and atmospheric pressure. The ferrofluids studied have volume fractions ranging from 5% to 10%. Because of the small temperature rise in the thin sample during the measurements and the very short measuring time of a few milliseconds, the influence of free convection can be ignored. The results show very good agreement with the experimental data in the openly published literatures, and thereby indicate the feasibility of the technique proposed in this report.