Numerical investigation of condensing steam flow in boundary layers

✍ Scribed by A.J White

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 794 KB
• Volume: 21
• Category: Article
• ISSN: 0142-727X
• DOI: 10.1016/s0142-727x(00)00030-8

✦ Synopsis

The paper describes a numerical method for the prediction of condensing steam ¯ow within compressible boundary layers. The method is based on a simple stream function technique, which enables straightforward integration of the nucleation and droplet growth equations in a Lagrangian frame of reference. Calculations show how viscous dissipation and reduced expansion rate within a typical boundary layer in¯uence nucleation and growth, leading to droplet radii and size distributions that dier substantially from those predicted in inviscid ¯ow. The impact of condensation on temperature and velocity pro®les, and the implications for thermodynamic loss are also considered.