滴下法による中空シリコン球製造技術の開発

滴落法硅空心球制造技术的开发

基本信息

批准号：
12J00385
负责人：
ブーチエーンバン (2013)
金额：
$ 1.15万
依托单位：
Ritsumeikan University
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2012
资助国家：
日本
起止时间：
2012 至 2013
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12J00385/
关键词：
silicon hollow jet instability coaxial nozzle front-tracking method compound jet solidification drop hollow drop compound drop

项目摘要

I have been developing the dropping method, which is based upon hollow jet instability, to form hollow spheres. The hollow jet is generally called "compound jet". To develop that technique experimental and numerical works have been carried out.Experiments : Hollow spheres are produced by an apparatus that consists of four main systems : a gas control system, a heating system, a coaxial nozzle mounted to a crucible, and a sphere formation chamber. Initially, we tested the technique with water. Then solder was used to produced hollov metal spheres. Next, we used germanium (Ge). Finally, we will produce hollow spheres of Silicon (Si)Simulations : along with preparing experimental apparatus, simulations of breakup process of compound jets (critical phenomenon in the experiments) by using the front-tracking method were performed. The interfaces are represented by connected points that move on a stationary grid. Due to balance forces such as inertia, viscous force and interfacial tension force, the jet that issues from a coaxial nozzle eventually breaks up into drops. To understand the solidification process, we also simulated heat transfer and phase change using the same method.

我一直在开发基于空心射流不稳定性的滴落方法来形成空心球。中空射流一般称为“复合射流”。为了开发该技术，已经进行了实验和数值工作。实验：空心球由由四个主要系统组成的设备生产：气体控制系统、加热系统、安装在坩埚上的同轴喷嘴和球体形成室。最初，我们用水测试了该技术。然后使用焊料生产hollov金属球。接下来，我们使用了锗 (Ge)。最后，我们将制作硅（Si）空心球模拟：在准备实验装置的同时，利用前向跟踪方法对复合射流的破碎过程（实验中的关键现象）进行了模拟。界面由在固定网格上移动的连接点表示。由于惯性、粘性力和界面张力等平衡力的作用，从同轴喷嘴喷出的射流最终破碎成液滴。为了了解凝固过程，我们还使用相同的方法模拟了传热和相变。