April 2025
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7 Reads
Annals of Nuclear Energy
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Publications (72)
December 2024
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20 Reads
The Journal of the Acoustical Society of America
Flow-induced noise is a complex source that significantly impacts submarines' stealth performance. While previous studies have provided valuable insights into the acoustic radiation of scaled-down submarine models, addressing the flow noise of full-scale prototypes has remained a daunting challenge. To bridge this gap, the research team undertook an extensive investigation to unveil the elusive similarity law of flow noise in both small and large-scale submarine models. By leveraging computational algorithms and turbulence models, the flow field of the submarine model was simulated, and the Kirchhoff and Ffowcs Williams–Hawkings model was employed to calculate the submarine's flow noise. This comprehensive study meticulously considered various influential factors, including Mach number, Reynolds number, etc., ultimately formulating a similarity correlation formula for submarine flow noise. The findings of this study revealed several key insights, including the minimal impact of accessories on submarine flow noise similarity, the adherence of the frequency of submarine flow noise to the Helmholtz number, and the intricate relationship between sound pressure level similarity law with Mach and Reynolds number. Ultimately, this study introduces and summarizes the submarine flow noise similarity law. This law enables the estimation of real-scale model flow noise by using small-scale model flow noise as a reference.
December 2024
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15 Reads
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2 Citations
International Communications in Heat and Mass Transfer
November 2024
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22 Reads
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1 Citation
Applied Thermal Engineering
September 2024
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17 Reads
Applied Thermal Engineering
January 2024
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20 Reads
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3 Citations
Annals of Nuclear Energy
November 2023
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16 Reads
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4 Citations
Journal of Molecular Liquids
June 2023
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81 Reads
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1 Citation
Computers & Fluids
Numerical simulations of flows with dilute disperse phase play an important role in a wide range of industrial applications. The most commonly used technique for solving such problems is the Eulerian-Lagrangian approach, in which individual particles are tracked inside the domain. However, the use of sliding and moving mesh in complex engineering applications poses more challenges for the parallelization of the Eulerian-Lagrangian method in the two-way coupling. In this context, this manuscript presents the parallel algorithm for tracking Lagrangian particles crossing sliding non-conformal interfaces in a mixed Eulerian-Lagrangian CFD algorithm, which is based on a parallel supermesh method introduced recently for the handling of sliding mesh in large-scale parallel computing (Y. Xiao and P.J. Ming, Jour. Computat. Phys., 2022). In the proposed parallel algorithm, critical problems such as geometric calculation for particles across non-conformal mesh interfaces and the dynamic communication for particle data can be handled based on the one-to-one addressing constructed by the supermesh method introduced in the author’s previous work. Further, a robust and easy-to-implement algorithm is also provided for particle communication caused by mesh moving. All methodologies are integrated and implemented for parallel computation obtaining good robustness and consistency. Specific examples are solved to examine the performance of this parallel strategy when applied to practical engineering problems.
May 2023
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22 Reads
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5 Citations
Ocean Engineering
March 2023
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13 Reads
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8 Citations
International Journal of Advanced Nuclear Reactor Design and Technology
The helical cruciform fuel (HCF) rod assembly is a new type of fuel for the lead-bismuth (LBE) fast reactor. It can be self-positioned and realize a coolant mixing without wrapped wire or grid spacer. This kind of fuel assembly can not only realize the function of the traditional wire-wrapped fuel assembly, but also omit the wire -wrapped structure, which provides a satisfactory prospect for the development of LBE reactor. In this study, the coolant mixing in the LBE cooled reactor with HCF assembly was analyzed numerically. The influence of the Reynolds number and different coolant mediums were investigated. Advantages and disadvantages of the HCF assembly were analyzed and compared with the wire-wrapped fuel.
Citations (37)
... The study determined that the optimal contact angle in the hydrophilic region decreased as the wall superheat increased. Li et al. [16] employed a molecular dynamics simulation to investigate boiling phenomena on mixed wettability surfaces. The research findings indicated that at lower degrees of superheat, nucleation occurred earlier on hydrophobic walls with partially hydrophilic regions compared to purely hydrophobic surfaces. ...
- Citing Article
November 2023
Journal of Molecular Liquids
... Points on or inside the unit circle correspond to stable or periodic modes, while points outside the unit circle correspond to unstable modes. 45 In Fig. 15, the majority of modes are located inside the unit circle, indicating that the corresponding modes are in a stable state. To reveal the trends in the variations of RF and PB frequency modes, Table VI provides the growth rates used to describe the stability of DMD modes. ...
- Citing Article
May 2023
Ocean Engineering
... In this scenario, based on the author's previous work [8,16], a novel and robust parallel algorithm for the Eulerian-Lagrangian approach crossing sliding mesh interfaces is provided in detail for two-way coupling in this work. This algorithm has no constraints on the domain partition schemes and can well handle the problem of particles crossing sliding non-conformal interfaces in parallel computing, which is suitable for a wide range of engineering applications. ...
- Citing Article
September 2022
Journal of Computational Physics
... Detailed descriptions of the experimental setup were reported in publications of our group (e.g., [17]). Hence, only a brief overview will be presented here. ...
- Citing Article
December 2021
Applied Thermal Engineering
... All flows are subject to three fundamental conservation laws: conservation of mass, momentum, and energy [27,28]. The simulation case is under high pressure and there are decompression components. ...
- Citing Article
December 2021
Annals of Nuclear Energy
... Among them, LINMAP [59] is a typical compromise model which can be used to derive weights [80] and widely applied in practical decision-making problems [9,12,35,80]. Yu [73] integrated the LINMAP with prospect theory to find attribute weights. Mehrabadi and Boyaghchi [44] used the LINMAP for decision-making in geothermal multi-generational energy systems. ...
- Citing Article
November 2021
Energy Conversion and Management
... The visualized reciprocating test rig consists of four parts, namely the transmission system, the pump station, the electrical control system and the high-speed camera system [30], as shown in Fig. 1. ...
- Citing Article
October 2021
International Journal of Green Energy
... In this context, the supermesh-based sliding interfaces method [8] is combined with the particle tracking process to tackle the interfaces-crossing issue in the two-way coupling method for the flows with a dilute disperse phase in serial computing. This basic algorithm is implemented in our in-house code which is based on the unstructured finite volume method. ...
- Citing Article
February 2021
Applied Mathematical Modelling
... The droplet coalesces with other droplets along its way, roaming the surface (Panel iii), before coming to rest (Panel iv). The corresponding video can be found in Supplementary Movie 1. Evidently, roaming demonstrates inplane arbitrary directionality which spans across considerable time and distance, and is distinct from localised multi-droplet coalescence 30,31 , which is confined to a specific location and occurs on shorter timescales (Supplementary Movie 2). ...
- Citing Article
- Full-text available
January 2021
... The idea of this model arose from the attempts to improve the Green-Naghdi type III version by introducing the concept of relaxation time or phase delay. In the last few years, a lot of studies related to the MGT theory and other types of generalized thermoelastic models have been conducted in a wide range of disciplines including fluid dynamics, elasticity, viscoelasticity, and thermoelasticity Singh 2022, 2023;Aboueregal and Sedighi 2021;Abouelregal et al. 2023;Fahmy 2021;Singh et al. 2022;Liu et al. 2021;Peng et al. 2022;Tiwari et al. 2022;Moaaz et al. 2023). ...
- Citing Article
December 2020
ARCHIVE Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science 1989-1996 (vols 203-210)