Numerical study on pressure oscillations amplitude distribution induced by water flow into pipe filled with steam

Quddus, Abdul; Shah, Ajmal; Qureshi, Kamran Rasheed; Tahir, Ahmad; Iqbal, Mazhar; Ayub, M.

doi:10.1016/j.anucene.2022.109095

Cited by 11 publications

(1 citation statement)

References 45 publications

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“…During the emergency cooling processes, pressurized thermal shock (PTS) can produce rapid pressure and temperature fluctuations, which may result in additional stress and load on the containment. 207 Quddus et al 208 found that pressure oscillation amplitude increases as the rising of the stream pressure from 200 to 1000 kPa, the decreasing of the water inlet velocity from 11 to 1 m/s, and the reducing of water temperature from 333 to 393 K. In the LOCA accident, the generated H 2 is more likely to accumulate in the upper region of the reactor because it is lighter than other gases, such as N 2 , O 2 , CO, and water gas. A severe explosion and radioactive materials release accident may occur when the concentration of H 2 exceeds the explosion limit.…”

Section: Reactor Cooling Crises Under Emergency Conditionsmentioning

confidence: 99%

Recent Advances in CFD Simulations of Multiphase Flow Processes with Phase Change

Zhu

Zhang

et al. 2023

Ind. Eng. Chem. Res.

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Phase change is a phenomenon that has been extensively utilized in chemical engineering, energy, electronics, vehicle, and space exploration. From both the science and engineering perspectives, gaining a profound understanding of the intricacies of multiphase flow processes accompanied by heat and mass transfer due to phase change is of fundamental importance. Indeed, the computational fluid dynamics (CFD) has been increasingly applied as an effective tool to give an in-depth and efficient analysis of the phase change processes, thereby enhancing our understanding and capacity to control and optimize the phase change effects in these processes. This paper seeks to provide a comprehensive review of the utilization of CFD methodologies in the simulations of phase change flows across various applications, including temperature management, drying, separation and purification, and others. First, the CFD models at various scales that are developed to elucidate the phase change processes are summarized. Second, the noteworthy advances in the recent CFD simulation work on various phase change processes are presented, respectively. Finally, the challenges and potential prospects to facilitate the application of the phase change flow are discussed. The current review aims to offer insightful guidance for the CFD modeling of phase change processes in numerous engineering application scenarios.

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Section: Reactor Cooling Crises Under Emergency Conditionsmentioning

confidence: 99%