Boundary conditions and geometry in pulmonary gas transport models

✍ Scribed by Manuel Paiva

• Book ID: 103052485
• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 683 KB
• Volume: 13
• Category: Article
• ISSN: 0010-4809
• DOI: 10.1016/0010-4809(80)90021-x

✦ Synopsis

Gas mixing is simulated using a piston and a cone model of the lung. An exact solution of the diffusion equation is derived in the case of a piston model and comparisons are made with numerical solutions using two different boundary conditions. It is shown that a nonhorizontal nitrogen alveolar plateau of a simulated single-breath test can be due to an inappropriate choice of boundary conditions. The cone model simulations approach the experiments reasonably well and give new information about the dual tracer single-breath tests.