Abstract Solid or liquid particles within a carrier gas may be deposited on solid surfaces exposed to the gas stream and, in some practical applications, these aerosol deposits have deleterious effects. In order to mitigate these effects, particle repulsive fields may be applied near the surface to reduce the deposition rate. A current blowing through the exposed surface may play this repulsion role with such a forced stream pushing the aerosol particles away from the surface. The present paper develops a model to analyse and estimate the effect of blowing in reducing particle deposition for laminar flows with high Reynolds numbers over flat surfaces. A classical self-similarity analysis is used to solve the boundary layer equations for mass and momentum conservation. The solution of the particle transport problem provides the self-similarity mass fraction profile and the mass deposition rate in terms of two parameters: the Schmidt number Sc and the dimensionless blowing rate. Moreover, two approximate methods are implemented in two asymptotic limits: for large values of Sc and when the blowing parameter is sufficiently small.

中文翻译：

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通过实施吹气系统在层流边界层中通过质量扩散获得的气溶胶沉积率。平板的近似方法

摘要 载气中的固体或液体颗粒可能会沉积在暴露于气流的固体表面上，在一些实际应用中，这些气溶胶沉积物会产生有害影响。为了减轻这些影响，可以在表面附近施加粒子排斥场以降低沉积速率。吹过暴露表面的电流可以起到这种排斥作用，这种强制流将气溶胶颗粒推离表面。本文开发了一个模型来分析和估计鼓风在减少平面上具有高雷诺数的层流的颗粒沉积方面的影响。经典的自相似性分析用于求解质量和动量守恒的边界层方程。粒子传输问题的解决方案根据两个参数提供自相似质量分数分布和质量沉积速率：施密特数 Sc 和无量纲吹气速率。此外，在两个渐近极限中实现了两种近似方法：对于较大的 Sc 值和当吹气参数足够小时。