An experimental and numerical study into turbulent condensing steam jets in air

被引：0

作者：

S. Oerlemans

R. Badie

M. E. H. Van Dongen

机构：

[1] Faculty of Applied Physics Eindhoven University of Technology Eindhoven,

[2] The Netherlands e-mail: stefan@nlr.nl,undefined

[3] Philips Research Laboratories Eindhoven,undefined

[4] The Netherlands,undefined

[5] Faculty of Applied Physics Eindhoven University of Technology,undefined

[6] PO Box 513 5600 MB Eindhoven,undefined

[7] The Netherlands,undefined

来源：

Experiments in Fluids | 2001年 / 31卷

关键词：

Steam; Numerical Model; Latent Heat; Heat Release; Droplet Size;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Temperatures, velocities, and droplet sizes are measured in turbulent condensing steam jets produced by a facial sauna, for varying nozzle diameters and varying initial velocities (Re=3,600–9,200). The release of latent heat due to droplet condensation causes the temperature in the two-phase jet to be significantly higher than in a single-phase jet. At some distance from the nozzle, droplets reach a maximum size and start to evaporate again, which results in a change in sign of latent heat release. The distance of maximum size is determined from droplet size measurements. The experimental results are compared with semi-analytical expressions and with a fully coupled numerical model of the turbulent condensing steam jet. The increase in centreline temperature due to droplet condensation is successfully predicted.

引用

页码：74 / 83

页数：9