一次深呼吸洗氮的数学模拟

Digital Simulation for Single Breath N2 Washout

在Weible肺解剖模型基础上，经过简化得到了适合数字模拟计算的肺数学模型，推导了一维肺数学摸型下气体在肺内的传输和扩散方程，对一次深呼吸洗氮进行了数学模拟，得到了一次深呼吸洗氮氮浓度与呼出气体体积的关系曲线，并与实验结果有较好的吻合，结果对研究气体在肺内的传输与扩散有重要的参考价值。

A suitable lung model for digital simulation is obtained in this paper based on Weible model. The equation of one dimensional m athematical model for human lung is derived and single breath N2 washo ut is simulated. The curve that describes the gas convection and diffu sion is calculated and comparison with experiment is also caught out. The theoretical results have a good agreement with the experiment.The achievements of this paper are of importance to the same kinds of stud y.