Solution for the Unsymmetrical Diffusion of Mixed Oil

The length of mixed oil section, inferred by symmetrical difusion mechanism, has a great difference compared with the practical mornitoring result. This is because of the existance of those effectiveness between boundary laminar flow and pipewall adhension of oil product. Thus, the diffusion factors of two type oil products are different from the point of overview. With practice and analysis of theory, the paper explains the unsymmetrical appearance of mixed oil characteristics.