Behavior of Subcooling Jet Injected into a Bulk Liquid in a Tank under Normal- and Micro-gravity Conditions

被引：4

作者：

Kawanami, Osamu ^{[1
]}

Takeda, Kentaro ^{[1
]}

Naguchi, Ryoma ^{[1
]}

Imai, Ryoji ^{[2
]}

Umemura, Yutaka ^{[3
]}

Himeno, Takehiro ^{[4
]}

机构：

[1] Univ Hyogo, Dept Mech Engn, 2167 Shosha, Himeji, Hyogo 6712280, Japan

[2] Muroran Inst Technol, Dept Engn, 27-1 Mizumoto Cho, Muroran, Hokkaido 0508585, Japan

[3] Japan Aerosp Explorat Agcy, 2-1-1 Sengen, Tsukuba, Ibaraki 3058505, Japan

[4] Univ Tokyo, Dept Aeronaut & Astronaut, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan

来源：

INTERNATIONAL JOURNAL OF MICROGRAVITY SCIENCE AND APPLICATION | 2019年 / 36卷 / 04期

关键词：

Jet mixing; Visualization; Dynamic analysis model; Microgravity; ZERO BOIL-OFF; STORAGE;

D O I：

10.15011//jasma.36.360402

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In the future exploration for deep space, cryogenic fluid will be used as propellant and oxidizer for spacecraft. The increasing of tank pressure is caused by boil off gas (BOG) induced by heat leakage into the tank from the surrounding environment. Reducing of BOG is derived from destroy of thermal stratification of a bulk liquid in the t ank. Therefore, development of Thermodynamic Vent System (TVS) for the purpose of prevent of loss of cryogenics propellant in future space system is needed. TVS combining jet mixing, spray, and heat spot removal by forced cooling using Electro-hydro-dynamics is under consideration by authors. Destroying thermal stratification without venting by using subcooling mixing jet will be developed for a key technology of TVS. In this paper, the behavior of the mixing jet by visualization method and description about the motion of the jet with a simple one-dimensional model without heat transfer is reported. In our simple dynamic model, a single sphere droplet as the tip of the jet is assumed and an equation of the motion is applied for the droplet. The results of analysis model and experimental data taken by shadowgraph system are compared. In addition, microgravity experiment is performed, and flow behavior in microgravity is described.

引用

页数：8

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