多注入角度喷雾的实验和计算模拟研究

2018/02/05   下载量： 3 次

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采用美国Artium公司的相位多普勒粒子干涉仪（PDI）和德国LaVision公司的喷雾测试系统SprayMaster对多注入角度喷雾进行了实验和计算模拟研究。

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The interaction of a spray plume within a confined cross-flow environment represents a common spray application
environment, most notably in gas conditioning applications. Characterization and modeling of the downstream drop
size and velocity distributions, as well as spray coverage & shape, was conducted within a controlled wind tunnel
environment. The primary focus of this study is the effect of various incident angle cross-flows on the characteristics
of a spray distribution.
While the spray characteristics immediately downstream of the nozzle will govern the magnitude of the effect of the
cross-flow, this study aims to provide a reference case in order to guide and compare future work. A low flow rate,
hydraulic, hollow cone spray was investigated with a nominally uniform cross-flow air speed of 15 m/s. These results
demonstrate the trajectory change as well as the change in spray plume characteristics over a range of spray
angles defined relative to the co-flow air stream direction.
The experimental results were acquired with a LaVision Laser Sheet Imaging (LSI) and an Artium Phase Doppler
Interferometer (PDI), to measure the spray shape, size, distribution characteristics as well as droplet size and velocity.
The spray simulations were conducted using ANSYS FLUENT computational fluid dynamics (CFD) package in
conjunction with custom spray injection methods developed in-house. The computational model’s agreement, and
disagreement, with the experimentally acquired results provides insight for the appropriate considerations when constructing
cross-flow models.

上一篇 在一个双稳湍流涡旋火焰中，对间歇性动态的时间-频率定位
下一篇 高雷诺数湍流中的惯性粒子团聚

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北京欧兰科技发展有限公司
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