仪器网

欢迎您: 免费注册 仪器双拼网址:www.yiqi.com
首页-资讯-资料-产品-求购-招标-品牌-展会-行业应用-社区-供应商手机版
官方微信
中国仪器网• 行业应用
应用首页 解决方案 行业标准
应用
  • 产品
  • 企业
  • 品牌
  • 资料
  • 问答
仪器网/ 行业应用/ 解决方案/ 用PIV研究内狭缝喷嘴流动及其对液体片状破裂的影响

用PIV研究内狭缝喷嘴流动及其对液体片状破裂的影响

点击这里给我发消息
内容节点
概述
实验/设备条件
样品提取
实验/操作方法
实验结果/结论
仪器/耗材清单
In this work the influence of the internal flow field on the liquid film was investigated. A strategy for reliable
PIV measurements inside of nozzle channels with a height of only a few hundred micrometers and at flow
velocities of several m/s has been developed. These PIV measurements provided 2 dimensional snapshots of the
velocity field inside the nozzle as well as velocity- and fluctuation-profiles across the channel. The development
of the channel flow could be observed along the channel length at laminar and partly turbulent flow conditions.
Disturbances were introduced to the flow field by inserting a wire into the channel flow. PIV measurements
showed the resulting change of the nozzle flow (in the wake of the wire and without wire, respectively). The
resulting effects on the free liquid film were observed using back-lit photographs and perpendicular lightsections
through the film surface. In the case of the undisturbed nozzle, velocity fluctuations occurred mainly in
the boundary layer and the fluctuations in main streamwise direction were dominant. The free liquid film of this
nozzle was smooth at the exit and only at higher Re numbers the growth of surface waves could be observed
further downstream. The nozzle with inserted wire showed a high level of velocity fluctuation in the center of the
flow. Here, the fluctuations normal to the walls were of the same magnitude as the fluctuations in streamwise
direction. The liquid film of this nozzle was roughened directly below the nozzle exit, even at low Re numbers.
The high level fluctuations normal to the wall are assumed to play the dominant role in this process. These
measurements demonstrate the influence of the internal flow field on the liquid sheet. The results of the present
work agree well with recent experiments of Heukelbach and Tropea [1] and supplement the existing
experimental data which for example can be used as input or validation of numerical simulations. 德国LaVision PIV/PLIF粒子成像测速场仪
相关产品
相关解决方案
热门解决方案
最新解决方案
在线留言
关于我们 | 诚聘英才 | 客户投诉 | 本站服务 | 会员中心 | 买家中心
仪器网(www.yiqi.com) --专业分析仪器,检测仪器平台,实验室仪器设备交易网,仪器行业专业网络宣传推广媒体。
仪器网(www.yiqi.com)--仪器拼音域名网址,简单,易懂,好记,可信; 符合仪器用户的记忆和使用习惯,是仪器选型采购的专业平台。
销售电话: 400 822 6768 企业销售咨询: 021-68559399 021-68551566 VIP会员售后QQ: 83550177 VIP会员销售QQ: 65884322
网站售后: 021-50353779 综合业务QQ: 11694366 免费企业会员售后QQ: 932545765 展会合作QQ: 784540580 仪器求购QQ: 61224355
Copyright 2004-2024 www.yiqi.com All Rights Reserved. 沪ICP备16012899号 沪B220170422号 互联网药品信息服务资格证书 沪公网安备 31011502008050号

沪公网安备 31011502008050号


若仪器网内容侵犯到您的权益，请及时告诉我们,我们马上修改或删除。邮箱：hezou_yiqi@163.com
官方微信

仪器网微信服务号

扫码获取最新信息


仪器网官方订阅号

扫码获取最新信息

在线客服

咨询客服

在线客服
工作日:  9:00-18:00
联系客服 企业专属客服
电话客服:  400-822-6768
工作日:  9:00-18:00
订阅商机

仪采招微信公众号

采购信息一键获取海量商机轻松掌控