关注我们: 登录 | 会员中心  | 手机版 | English

当前位置:中仿科技(CnTech) » 文献参考 » 自然科学研究与计算自然科学研究与计算
字体大小: 打印

Numerical Analysis of Air Flow Through Metal Foams

原文作者:
  Andrea Diania, Kartik K. Bodlab, Luisa Rossetto, Suresh V. Garimella
发布时间:
  2014-08-14
来    源:
  University degli Studi di Padova,School of Mechanical Engineering, Purdue University
相关产品:
  Simpleware
下载链接:
Abstract
    X-ray micro computed tomography (u-CT), originally developed for non-destructive biomedical imaging, is increasingly being employed in areas as diverse as materials characterization and reverse engineering. The technique employs computer processed X-rays to produce tomographic images or slices of specific regions of the object under investigation. This paper presents a numerical analysis of air flow through four different high-porosity ERG copper foams having different pore sizes (5, 10, 20, and 40 pores per inch, PPI), and approximately the same relative density (6.4-6.6% solid fraction). These samples were scanned with a commercial micro computed tomography scanner at a resolution of 20 pm, yielding a stack of two-dimensional images. Starting with these two-dimensional images, the real, random stmcture of the foams was reconstructed and subsequently meshed using the commercial software Simpleware. Meshes thus produced were then exported to FLUENT for simulating the fluid flow through the pore space of the foam samples. The results of }-CT based CFD computations are compared against experimental measurements of pressure drop that were previously obtained with the same samples. The comparison reveals excellent agreement between the numerical and experimental results, highlighting the accuracy of this novel approach.
``````