Numerical investigation of oxygen bubble condensation in subcooled quiescent liquid oxygen based on height function method

Zhu, Chengfeng; Li, Yanzhong; Xie, Fushou; Wang, Lei; Ma, Yingqun

doi:10.1016/j.applthermaleng.2023.120207

Cited by 4 publications

(7 citation statements)

References 35 publications

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“…Figure 4 shows the comparison of gage pressure fluctuation at the Tee junction by experimental and numerical results. Compared with other mass transfer models, the waveform of pressure oscillation of numerical results achieves agreement with that of experimental data 19,22 . By the spectral analysis, the first main frequency of the numerical result is 8.9 Hz, very close to the experimental data of 10 Hz.…”

Section: Numerical Methodologysupporting

confidence: 70%

“…The present numerical model has already been validated by the steam jet condensation in our previous work 19,22 . Owing to the lacking of experimental data about the pressure oscillation of oxygen jet condensation, Wang et al's 13 experimental data for steam jet condensation is referred to verify the numerical model.…”

Section: Numerical Methodologymentioning

confidence: 74%

“…However, few researchers focus on the jet condensation of cryogenic fluids, such as LOX. Our previous research 19 illustrates that the amplitude of pressure oscillation for cryogenic fluids is approximately three to four times as larger as that for near‐room‐temperature mediums. So it is necessary to explore the oxygen jet condensation process as soon as possible.…”

Section: Introductionmentioning

confidence: 89%

“…The modified energy balance model 19,22 is used to calculate the mass transfer rate

\overset{m}{true}

(unit: kg·m −3 ·s −1 ) across the two‐phase interface, which is used in Equation ().…”

Section: Numerical Methodologymentioning

confidence: 99%

“…This treatment is the key to the accurate capture of low-frequency pressure oscillation in oxygen jet condensation. The detailed numerical procedure can be referred to Zhu et al 19,22…”

Section: Numerical Methodologymentioning

confidence: 99%

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Numerical study on the effect of mass flux on the low frequency pressure oscillation occurred in oxygen jet condensation

Zhu

Wang

et al. 2023

Asia-Pacific J Chem Eng

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In the delivery pipeline of cryogenic liquid rockets, low‐frequency pressure oscillation always occurs with the oxygen jet condensation. It is a potential hazard to the normal operation of the propulsion system. It is necessary to study the characteristic of low‐frequency pressure oscillation precisely, especially the influence factors of frequency and amplitude. Aiming at the effect of mass flux on low‐frequency pressure oscillation, an oxygen injection condensation simulation is carried out based on a modified mass transfer model. The height function method is adopted to calculate the interfacial curvature, which is the key factor to capture the characteristic of pressure oscillation. The numerical result indicates that there are two typical oxygen jet condensation patterns under different mass fluxes: suck‐back chugging and slight pulsation. The amplitude of suck‐back chugging is 30–120 kPa, while that of slight pulsation is 1–3 kPa. When it comes to suck‐back chugging, the liquid oxygen suck‐back flow phenomenon occurs. The upper and lower boundaries are found to distinguish the suck‐back chugging and slight pulsation patterns, which are caused by the turbulent effect of liquid oxygen and the subcooling of liquid oxygen, respectively. The highest amplitude of pressure oscillation is about 114 kPa, appearing at the intersection of the upper and lower boundary. It is the most dangerous operation condition, which should be avoided in the design of the propulsion system. These conclusions provide sufficient theoretical guidance for the design of the cryogenic liquid rocket.

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Section: Numerical Methodologysupporting

confidence: 70%

Section: Numerical Methodologymentioning

confidence: 74%

Section: Introductionmentioning

confidence: 89%

“…The modified energy balance model 19,22 is used to calculate the mass transfer rate

\overset{m}{true}

(unit: kg·m −3 ·s −1 ) across the two‐phase interface, which is used in Equation ().…”

Section: Numerical Methodologymentioning

confidence: 99%

“…This treatment is the key to the accurate capture of low-frequency pressure oscillation in oxygen jet condensation. The detailed numerical procedure can be referred to Zhu et al 19,22…”

Section: Numerical Methodologymentioning

confidence: 99%

See 3 more Smart Citations

Numerical study on the effect of mass flux on the low frequency pressure oscillation occurred in oxygen jet condensation

Zhu

Wang

et al. 2023

Asia-Pacific J Chem Eng

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Numerical Simulation of Oxygen Jet Condensation in Cryogenic Liquid Rocket

Zhu,

2024

Springer Proceedings in Mathematics &Amp; Statistics

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Low-frequency oscillation flow in nitrogen jet condensation

Zhu,

Li,

Wang

et al. 2024

Physics of Fluids

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Jet condensation is a complicated two-phase flow phenomenon that occurs in pipe flow, especially in cryogenic fluids. In this study, the condensation flow dynamics of a stream of nitrogen (N2) injected into a subcooled liquid nitrogen (LN2) flow was photographically investigated using a high-speed camera. The pulsating pressure was measured at different observation points using dynamic pressure transducers. Three typical condensation flow patterns were observed and measured under different nitrogen volume fluxes: suck-back flow, transition flow, and oscillation flow. Suck-back flow occurs at a smaller N2 volume flux, where the LN2 is periodically sucked back into the gas chamber. Oscillation flow is encountered at larger N2 volume flux, along with intense pressure fluctuations. Using fast Fourier transform analysis, the frequency of these pressure oscillations was found to be in the range 16–18 Hz with a maximum amplitude of about 10 kPa. An image-processing method was developed to track the fluid motion in the dynamic photographs recorded by the high-speed camera according to the local changes of pixels. The results show the presence of a periodic shrinking of the vapor-plume trail with the same frequency as the pressure oscillation. The mechanism for the low-frequency oscillation flow is, therefore, identified as periodic interfacial condensation. The findings of this study provide strong evidence for the origin of the low-frequency pressure oscillations observed in cryogenic liquid rocket engines. This information can be used to improve the design and operation of such propulsion systems.

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Numerical investigation of oxygen bubble condensation in subcooled quiescent liquid oxygen based on height function method

Cited by 4 publications

References 35 publications

Numerical study on the effect of mass flux on the low frequency pressure oscillation occurred in oxygen jet condensation

Numerical study on the effect of mass flux on the low frequency pressure oscillation occurred in oxygen jet condensation

Numerical Simulation of Oxygen Jet Condensation in Cryogenic Liquid Rocket

Low-frequency oscillation flow in nitrogen jet condensation

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