Abstract: In this paper,we present a real-time combustion model to simulate fire phenomena with solid object decomposition process involved.To achieve a good tradeoff between performance and visual appearance,a hybrid structure of grids is employed in the model.Heat transfer is modeled in a compact framework,so the turbulent fire and the burning solid are well coupled.With an improved burning surface update scheme and a novel surface texture projection algorithm for its visualization,convincing results are produced.To increase the efficiency of our model,a few acceleration techniques are proposed as well.As a result,realistic solid burning phenomenon is well simulated in real time.