A Numerical Study on the Settlement Characteristics of Slush CryogenicPropellants in the Tank

XIA Siqi; XIE Fushou; LI Yanzhong; GUO Wan

doi:10.7652/xjtuxb202401014

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A Numerical Study on the Settlement Characteristics of Slush CryogenicPropellants in the Tank

更新时间：2025-05-13

- A Numerical Study on the Settlement Characteristics of Slush CryogenicPropellants in the Tank
- Vol. 58, Issue 1, Pages: 146-156(2024)
- 作者机构：
  
  西安交通大学制冷与低温工程研究所,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202401014
  CLC： V511+.6
- Online First：10 January 2024，
  
  Published：2024
- 稿件说明：
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XIA Siqi, XIE Fushou, LI Yanzhong, et al. A Numerical Study on the Settlement Characteristics of Slush CryogenicPropellants in the Tank[J]. 2024, 58(1): 146-156.
DOI：

XIA Siqi, XIE Fushou, LI Yanzhong, et al. A Numerical Study on the Settlement Characteristics of Slush CryogenicPropellants in the Tank[J]. 2024, 58(1): 146-156. DOI： 10.7652/xjtuxb202401014.

摘要

为了揭示浆态低温推进剂在贮存时的颗粒沉积行为规律

解决沉积带来的浆态低温推进剂向火箭发动机输送时的供给问题

研究了贮箱内浆态低温推进剂的沉降特性。基于欧拉-欧拉数值模拟方法

考虑固体颗粒动力学理论建立了低温固液两相流动与相变传热数值模型

研究了浆态低温推进剂(浆氮、浆氧、浆氢)在贮箱内两相流场动力学信息与沉降特性

并讨论了不同低温工质、不同粒径(0.02～0.5 mm)、不同固相体积分数(10%～50%)以及不同漏热率(50～200 W/m

)工况对浆体低温推进剂沉积和流场特性的影响。结果表明:固氧颗粒在液氧内沉降较为微弱

但固氮和固氢颗粒明显沉降

实际应用时需考虑防沉降措施; 在固相粒径较小、固相初始含量较少、壁面漏热更少的情况下

浆态低温推进剂的沉积量更少; 固液密度比较大的浆状流体沉降速率更快

以0.5 mm的粒径为例

浆氮、浆氢相界面的下移速率分别为15.62及12.58 mm/s

而浆氧的相界面下移速率仅为0.12 mm/s; 此外

在特定条件下贮箱中存在方向相反的双涡旋。研究结果揭示了浆态低温推进剂在存储过程中的物理规律

可为浆态流体的高效储存和应用提供参考。

Abstract

To investigate the particle settlement behavior of slush cryogenic propellants during storage process and address the supply issue caused by deposition during transportation to rocket engines

the research on sedimentation characteristics of slush cryogenic propellants in the tank was carried out. This numerical model utilizes the Euler-Euler method

considering the kinetic particle theory

to simulate cryogenic solid-liquid two-phase flow and phase change heat transfer of propellants. The study focuses on analyzing the flow field and deposition characteristics of slush cryogenic propellants such as s

lush nitrogen

slush oxygen

and slush hydrogen within the tank. This study examines the influence of various factors on the deposition and flow field characteristics of cryogenic fluids

including different cryogenic propellants

particle sizes ranging from 0.02 to 0.5 mm

volume fraction of solid hydrogen ranging from 10% to 50%

and heat leakage rate ranging from 50 to 200 W/m

. It is concluded that the deposition of slush cryogenic propellant is reduced when the solid particle size is smaller

the initial solid phase content is lower

and there is less heat leakage at the wall. Additionally

slush fluids with higher solid-liquid density exhibit a faster deposition rate. For a particle size of 0.5 mm

the slurry nitrogen and slurry hydrogen phase interfaces display downward migration rates of 15.62 mm/s and 12.58 mm/s

respectively

while the slush oxygen phase interface has a significant slower downward migration rate of only 0.12 mm/s. These findings shed light on the physical behaviors of slush cryogenic propellants during storage process

providing valuable insights for the efficient storage and application of slush cryogenic propellants.

关键词

Keywords

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