Abstract: Non-photorealistic Rendering (NPR) technology is one of the most popular research computergraphics in recent years. lt is based on the expression of art, and human cognition, with the help of com-puter digital simulation algorithm to generate hand-painted style images. Its aim is not to show the authen.ticity of the image, but to show the artistic nature of the image, simulate works of art, enhance the ex-change of visual information. It has been applied in many industries, has a wide range of applications andpossesses huge market prospects. Simulation efects can often give people a strong visual impact and endless imagination. By utilizing the adaptive LIC, (Line Integral Convolution) and introducing the abstractE'TF ( Edge 'Tangent Flow) model, abstraet fluid in Van Gogh's style oil paintingis generated, resulting ina good simulation effect.

Key words: Non-Photorealistic Rendering ( NPR ), digital simulation, oil painting, Line Integral Convo-lution (LIC): Edge Tangent Flow(ETF)