搜索结果: 1-15 共查到“工学 Droplet”相关记录16条 . 查询时间(0.202 秒)
High-speed camera captures a water jet’s splashy impact as it pierces a droplet（图）
高速摄像机 水射流 注射药物
2023/6/19
Squirting a jet of water through a drop of liquid may sound like idle fun, but if done precisely, and understood thoroughly, the splashy exercise could help scientists identify ways to inject fluids s...
Morphology and Development of Droplet Deformation Under Flow Within Microflidic Devices
Morphology Development Droplet Deformation Flow Within Microfluidic Devices
2014/10/24
Microfluidics is the science of processing up to microliters of fluid at a time in a channel with dimensions on the order of microns. The small size of the devices allows fluid properties to be studie...
A Numerical Study of Droplet Formation and Behavior using Interface Tracking Methods
A Numerical Study Droplet Formation Interface Tracking Methods
2014/10/24
An adaptive remeshing algorithm has b een develop ed for multiphase flow simulations using the moving-mesh interface tracking (MMIT) technique. The edgeswapping algorithm uses the Delaunay criterion (...
JILA Physicists Discover 'Quantum Droplet' in Semiconductor（图）
Semiconductor Quantum Droplet
2014/3/20
JILA physicists used an ultrafast laser and help from German theorists to discover a new semiconductor quasiparticle—a handful of smaller particles that briefly condense into a liquid-like droplet.
燃油粘度与环境压力对喷雾碰撞过程的影响（Investigation of the Influences of Droplet Viscosity and Environmental Pressure on the Spray Collision）
内燃机 喷雾模拟 碰撞模型
2010/12/28
O’Rourke碰撞模型仅仅考虑了碰撞拉伸分离以及聚合，而忽略了碰撞反弹、反射分离以及高韦伯数下的碰撞二次破碎过程，在碰撞分区过程中也忽略了燃油物性以及碰撞环境条件的影响，使得预测的碰撞分区临界韦伯数偏低。复合碰撞模型根据相关的实验结果对碰撞分区进行油滴粘度以及碰撞环境压力修正，考虑碰撞反弹、反射分离、拉伸分离以及碰撞二次破碎过程，提高了碰撞分区的预测精度。基于复合碰撞模型，分析了油滴粘度与环境压...
Scalable attoliter monodisperse droplet formation using multiphase nano-microfluidics
Nano-microfluidics Droplet Attoliter Monodisperse Capillary focusing
2016/12/2
We demonstrate a robust method to produce monodisperse femtoliter to attoliter droplets by using a nano-microfluidic device. Two immiscible liquids are forced through a nanochannel where a steady nano...
MONODISPERSE ATTOLITER DROPLET FORMA-TION USING A NANO-MICROCHANNEL INTERFACE
Droplet Attoliter Nano-microchannel Interface
2016/12/2
We demonstrate the production of sub-micrometer diameter monodisperse droplets by using a nano-micro channel interface. A perfectly steady nanoscopic liquid filament can be formed by a geometric confi...
通过模拟田间实际喷雾情况，利用图像采集系统采集雾滴图像，对其进行增强和分割等预处理，并对粘连雾滴提出用改进的分离粘连雾滴算法进行了分离处理。基于相同样本，用图像处理方法获得的雾滴粒径分布及覆盖率等参数与激光粒度仪测量结果的对比分析表明，利用图像处理技术检测雾滴分布参数，其测量误差在6%以内。
Retention of Emulsified Flavor in a Single Droplet during Drying
flavor retention spray drying emulsion diffusion
2009/7/8
The prevention of the loss of flavor compounds during spray drying is one of the most important engineering techniques to obtain high quality powdery food products. In the present study, a droplet dry...
基于CFD的果园风送式喷雾机雾滴分布特性分析（CFD Simulation and Experimental Verification of Droplet Dispersion of Air-assisted Orchard Sprayer）
果园喷雾机 风送式CFD 模拟 雾滴 分布
2010/2/26
基于CFD技术建立了Hardi LB-255型果园风送式喷雾机雾滴沉积分布模型。根据实测的喷雾机相关参数，确定了二维流场的边界条件及模型参数，得到了约束条件下的雾滴沉积轨迹及不同层面上的沉积比率。设计了与模拟条件相同的验证试验，对模拟结果进行了验证分析。研究表明，在距风扇中心小于240cm的区域内，所建模型模拟结果能较准确描述雾滴沉积规律。 In order to investigate the ...
Size distribution of droplets above a rotating stream tray and model of droplet motion therein
rotating stream tray droplet size distribution model for droplet motion
2009/3/23
Size distribution of droplets above a rotating stream tray and model of droplet motion therein.
Geometry-controlled droplet generation in head-on microfluidic devices
Geometry-controlled droplet generation microfluidic devices
2016/12/2
We investigated the generation of droplets in a head-on microfluidic device operated with the two identical channels as inlets and the “long leg” as a constriction channel leading to a wider outlet se...
Effect of Fat and Protein Contents on Droplet Size and Surface Protein Coverage in Dairy Emulsions
dairy emulsions droplet size protein coverage
2008/3/19
Oil in water emulsions were prepared using anhydrous milk fat and skim milk homogenized with a laboratory-scale microfluidizer. The fat content was varied between that of raw milk and cream, 4 to 30 g...
Research into three-component biodiesel fuels combustion process using a single droplet technique
single droplet technique combustion mechanism ignition delay time dehydrated ethanol additive fuel burning multicomponent fuels
2010/11/1
In order to reduce the engine emission while at same time improving engine efficiency, it is very important to clarify the combustion mechanism. Even if, there are many researches into investigating t...
Effect of Yolk/White Ratio on Flow Property and Droplet Size in Fish Meat Emulsion
yolk/white ratio flow property droplet size
2010/11/24
Fish meat emulsion was prepared from very-low-lipid sardine minced meat obtained through grinding or suspending in weak alkaline solution, and the effect of the yolk/white ratio in a blended emulsifie...