Experimental study on the direct contact condensation of gaseous oxygen jets in crossflow of liquid oxygen

Fang, Jie; Zhang, Tongyang; Jia, Xiaoyu; Li, Xudong; Liu, Jinfan; Yu, Nanjia; Xuan, Chuanwei; Cai, Guobiao

doi:10.1016/j.expthermflusci.2023.110847

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…So it is necessary to explore the oxygen jet condensation process as soon as possible. Fang et al 20 observed the oxygen jet condensation phenomenon through the experiment and obtained a pressure oscillation frequency of above 100 Hz 21 . However, the low‐frequency pressure oscillation of about 10 Hz is not captured successfully.…”

Section: Introductionmentioning

confidence: 99%

“…Fang et al 20 observed the oxygen jet condensation phenomenon through the experiment and obtained a pressure oscillation frequency of above 100 Hz. 21 However, the low-frequency pressure oscillation of about 10 Hz is not captured successfully. Recently, our previous work 22 proposed a novel mass transfer model and obtained the low-frequency characteristic of 10.6 Hz about oxygen jet condensation.…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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Development of a modified thermal phase change model based on the interfacial area concentration determined by an interface reconstruction algorithm

Fang,

Zhang,

Zhang

et al. 2024

International Journal of Heat and Mass Transfer

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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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Experimental study on the direct contact condensation of gaseous oxygen jets in crossflow of liquid oxygen

Cited by 4 publications

References 25 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

Development of a modified thermal phase change model based on the interfacial area concentration determined by an interface reconstruction algorithm

Low-frequency oscillation flow in nitrogen jet condensation

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