Numerical Investigation on Instability Flow Behaviors of Liquid Oxygen in a Feeding Pipeline with a Five-Way Spherical Cavity
Abstract
:1. Introduction
2. Description of Instability Flow Phenomenon in LOX Feedlines
3. Computational Methodology
3.1. Physical Model
3.2. Governing Equations
3.3. Turbulence Model (SST k-ω)
3.4. Boundary Conditions
3.5. Solution Strategy
4. Verification of Numerical Computation
4.1. Grid Generation
4.2. Y+ Independence Study
4.3. Mesh Independence Study
4.4. Validation of Results
5. Results and Discussion
5.1. Evolution Process of Flow Field Inside the Feedline
5.2. Pressure Change Along Flow Direction Under Different Disturbances
5.3. Contours of Spindle-Like Vortex
5.4. Stability Analysis of the Flow Field Structure
5.5. Effect of the Five-Way Spherical Cavity Structure on Pressure Loss
6. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Names | Unit | Value | |
---|---|---|---|
Main pipe | Diameter (D1) | mm | 240 |
Length (L1) | mm | 1000 | |
Five-way spherical cavity | Diameter (D2) | mm | 360 |
Branch pipes | Diameter (D3) | mm | 120 |
Horizontal length (L2) | mm | 410 | |
Radius of bend pipe (R) | mm | 185 | |
Angle of bend pipe (θ) | ° | 87 | |
Vertical length (L3) | mm | 1300 |
Name | Location (mm) | Name | Location (mm) |
---|---|---|---|
Inlet | (0, 1135, 0) | I-Section-4 | (0, 0, 590) |
Msection-1 | (0, 734.16, 0) | I-Section-5 | (0, −20, 665) |
Msection-2 | (0, 434.16, 0) | I-Section-6 | (0, −68, 729) |
Msection-3 | (0, 134.16, 0) | I-Section-7 | (0, −177, 770) |
I-Section-1 | (0, 0, 170) | I-Section-8 | (0, −527, 770) |
I-Section-2 | (0, 0, 310) | I-Section-9 | (0, −877, 770) |
I-Section-3 | (0, 0, 450) | Outlet | (0, −1475, 770) |
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Xie, F.; Xia, S.; Chen, E.; Li, Y.; Mao, H.; Ma, Y. Numerical Investigation on Instability Flow Behaviors of Liquid Oxygen in a Feeding Pipeline with a Five-Way Spherical Cavity. Energies 2020, 13, 926. https://doi.org/10.3390/en13040926
Xie F, Xia S, Chen E, Li Y, Mao H, Ma Y. Numerical Investigation on Instability Flow Behaviors of Liquid Oxygen in a Feeding Pipeline with a Five-Way Spherical Cavity. Energies. 2020; 13(4):926. https://doi.org/10.3390/en13040926
Chicago/Turabian StyleXie, Fushou, Siqi Xia, Erfeng Chen, Yanzhong Li, Hongwei Mao, and Yuan Ma. 2020. "Numerical Investigation on Instability Flow Behaviors of Liquid Oxygen in a Feeding Pipeline with a Five-Way Spherical Cavity" Energies 13, no. 4: 926. https://doi.org/10.3390/en13040926