论文标题
牛顿液和血液对简单织物的液滴影响：织物孔径和基础底物的影响
Droplet impact of Newtonian fluids and blood on simple fabrics: effect of fabric pore size and underlying substrate
论文作者
论文摘要
当液滴以足够高的冲击速度撞击织物网格时，它不仅在织物上散布，而且可以穿透其毛孔。为了确定织物对液滴散布在薄织物网眼上的液体渗透的影响，我们使用高速摄像头测量了带有和没有下层底物的织物上的液滴扩散比。对于没有底物的织物，随着液体的织物穿透织物渗透会减小液滴体积扩散在织物顶部时，液滴扩散比会降低。使用熵晶格Boltzmann模拟，我们发现织物上有和没有基质的织物上的下液滴扩散比是由于在扩散过程中液滴内部粘性损失的增加所致。将血液的液滴影响与牛顿的对应物进行比较，我们表明，要在织物上传播，就像在光滑的表面上一样，血液可以近似为牛顿液。
When a droplet impacts a fabric mesh at a sufficiently high impact velocity, it not only spreads over the fabric but also penetrate its pores. To determine the influence of this liquid penetration of the fabric on droplet spreading on thin fabric meshes, we measured the droplet spreading ratio on fabric with and without an underlying substrate using a high-speed camera. For fabrics without a substrate, the droplet spreading ratio is reduced as the fabric penetration by the liquid reduces the droplet volume spreading on top of the fabric. Using entropic lattice Boltzmann simulations, we find that the lower droplet spreading ratio on fabrics, both with and without a substrate, is due to an increase of viscous losses inside the droplet during spreading. Comparing droplet impact of blood with its Newtonian counterpart, we show that for spreading on fabrics, just like on smooth surfaces, blood can be approximated as a Newtonian fluid.
