关键词: 流场可视化, 质点平流, 图像平流, 纹理混合

Abstract: In order to improve the rendering quality and speed of unsteady flow visualization results, the authors presented an improved unsteady flow visualization algorithm based on advection and texture blending. The temporal coherence in the flow animation was got by image advection and the spatial coherence constructed in each frame was got by particle advection, and the temporal-spatial coherence was unified by texture blending at last. In this way, the texture detail of flow animation is clear and the change in each frame is smooth. Furthermore, this algorithm can achieve a real-time frame rate. The high temporal-spatial coherence can exactly reflect unsteady flow dynamic variety.

Key words: flow field visualization, particle advection, image advection, texture blending