NUMERICAL SIMULATION METHOD OF MICROSTRUCTURE AND OPTICAL CHARACTERISTICS OF MAGNETIC FLUIDS
A magnetic fluid possesses a variety of unique characteristics because of both the magnetism of nanoparticles material and the fluidity of the carrier liquid. The characteristics of magnetic fluid depend upon the microstructure of the magnetic nanoparticles aggregation. This paper aims to use the molecular dynamic method to simulate the microstructure formation in a magnetic fluid. A number of inner and externalpotentials and forces acting on the magnetic fluid are included to reveal the effects of these potentials and forces to the magnetic fluid morphology. Further, a numerical method to study the optical feature of the magnetic fluid films is developed with the Monte Carlo method based on the simulated microstructures, which tracks the spread process of ray transmitting through the magnetic fluid film and computes thespectral transmittivity of the magnetic film. Some factors of affecting the spectral transmittivity of magnetic fluid film are investigated, such as the film thickness, the concentration and diameter of magnetic nanoparticles, and strength of externally applied magnetic field. By combining the molecular dynamic simulation and the ray-tracing method, this paper provides a useful tool for investigating the morphology and optical characteristic of a ferrofluid film.
magnetic fluid microstructure opticalcharacteristic numerical simulation
Yimin Xuan Qiang Li Bing Li
School of Power Engineering, Nanjing University of Science & Technology, Nanjing, China
国际会议
海南三亚
英文
2007-01-10（万方平台首次上网日期，不代表论文的发表时间）