I think this is a good lay-person's introduction to basis of Kolmogorov's length scale, specifically the Reynold's number: https://www.youtube.com/watch?v=wtIhV

I think this is a good lay-person's introduction to basis of Kolmogorov's length scale, specifically the Reynold's number: https://www.youtube.com/watch?v=wtIhVwPruwY https://www.youtube.com/watch?v=wtIhVwPruwY