Vortex-Speed Selection within the Rotating-Disk Boundary Layer

Vortex-Speed Selection within the Rotating-Disk Boundary Layer
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DOI:
10.1260/1748-3018.4.1.71
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发表时间:
2010-03
影响因子:
0.9
通讯作者:
S. Garrett
S. Garrett
中科院分区:
--
文献类型:
--
作者:
S. Garrett

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对旋转盘边界层内的涡速选择进行了理论研究。本文使用了两种不同于以往文献研究的方法,能够分析相对于旋转表面的特定涡速。使用这些方法(连同基于临界雷诺数,不稳定参数范围和线性增长率的参数),假设在使用光滑,清洁磁盘的应用中,例如在化学气相沉积(CVD)反应器中,可能会选择在磁盘表面约75%处行进的横流模式。
A theoretical investigation into the vortex-speed selection within the rotating-disk boundary layer is conducted. Two methods are used which are different to previous investigations in the literature and enable analysis of a particular vortex speed with respect to the rotating surface. Using these methods (together with arguments based on critical Reynolds numbers, unstable parameter ranges and linear growth rates) it is hypothesised that crossflow modes travelling at around 75% of the disk surface are likely to be selected in applications where smooth, clean disks are used, for example in Chemical Vapour Deposition (CVD) reactors.