bluuebunny/crossref_metadata_2025_split huggingface dataset:
CFD-based Numerical Analysis of Amphibious Vehicle Hydrodynamics during Turning Motion
Authors: Li Zhao , Sun Xuguang , Wu Jiaxiong , Sun Xiaoce , Chen Peng 
Published: October 2023

AbstractAmphibious vehicle has blunt bow and multi appendage structure, and its flow field characteristics are very complicated during maneuvering. In this paper, a simplified model of amphibious vehicle with propulsion device is established, and the thrust volume force model is introduced to consider the pumping and water jet propulsion of the water effects jet propulsion device. The technique of overlapping grid is used to deal with the six-degree-of-freedom large-scale hull motion problem, and study the turning motion of amphibious vehicle under different rudder angles. The results of numerical simulation show that the amphibious vehicle will enter a stable turning state when turning on the water surface, but the heel angle is large, the draft depth and the speed drop are significant. The state of water baffle has a significant influence on vehicle trim and roll motion. Larger vehicle pitching motion amplitude will increase the risk of overturning.
Numerical Analysis of the Temperature Rise at Fast Filling of Hydrogen Storage Cylinder Based on Fluid-Thermal-Solid Coupling
Authors: Xie Huiyu , Ou Chenxi , Chen Xinhui , Yang Gang 
Published: October 2023

Abstract
Taking the type III hydrogen storage cylinder of a hydrogen energy detection institution as the research object, the fluid-thermal-solid coupling calculation and analysis were carried out on ANSYS Workbench, fully considering the differences among different material layers and the inhomogeneity of temperature load distribution. The results showed that the maximum temperature of the cylinder and the maximum stress on the carbon fiber winding layer both appeared at the connection between the end head and the cylinder when the filling was finished. The thermal stress caused by temperature load is small compared to the mechanical stress caused by internal pressure. The difference between the values of mechanical stress and coupling stress is not significant, and the mechanical stress on the carbon fiber winding layer was slightly smaller than the coupling stress. Due to the large expansion coefficient of the aluminum liner, the compressive thermal stress caused by the temperature load offset a part of the mechanical stress, making the coupling stress less than the mechanical stress.
Electromagnetic Testing System for Measurement of Low Conductivity Objects
Authors: Chen Guang , Li Jichao , Zhou Ke , Li Tianya 
Published: October 2023

Abstract
Electromagnetic testing technology has been widely adopted in industrial process parameter detection, biomedical engineering and other fields due to its fast response, non-contact, non radiation and low cost features. However, measurement of low conductivity objects has always been considered a challenge in the field of electromagnetic testing, due to factors such as low signal sensitivity and data processing complexity, etc. An electromagnetic testing system is presented in this paper, which achieves the detection and extraction of electrical characteristic parameters of low conductivity objects by optimizing sensors, increasing operating frequency, improving effective data transmission and processing etc. Its performance is verified through imaging experiments.
Performance Analysis of Boiling Drying Granulator Cutting Spraying Assisted Wind Field
Authors: Qiao Jibing , Sha Yufeng , Meng Zhaoxin , Liu Jinhui 
Published: October 2023

Abstract
Through computational fluid dynamics (CFD) analysis, the research focused on the influence of fish-scale hole structure and porosity on the airflow uniformity within a cutting and spraying form fluidized bed drying granulator. By optimizing the airflow distribution through simulation calculations, the overall performance of the granulator was improved, leading to enhanced drying efficiency and reduced energy consumption. Furthermore, a comprehensive understanding of the complex airflow patterns and turbulence characteristics within the granulator was gained, facilitating the identification of factors impacting airflow uniformity, such as the structural design and opening rates of the fish-scale hole structure. This knowledge contributed to the development of effective process control and optimization strategies. The research findings demonstrated that the best internal airflow uniformity was achieved when the fish-scale holes had a width of 21mm, a hole height of 3mm, and an overall porosity of 8.4%, or a width of 24mm, a hole height of 2.5mm, and an overall porosity of 8.0%. These results provide guidance for achieving better product outcomes in industrial applications.
Numerical Analysis of a Novel Rotating Piston Blood Pump Based on CFD
Authors: Dong Dianjin , Jiang Jing , Li Dongmei 
Published: October 2023

Abstract
Currently, centrifugal and roller pumps are primarily used as ECMO blood pumps, but their high pressure or high shear force may lead to complications such as hemolysis and platelet activation. Thus, a new blood pump structure was designed by improving the rotating piston pump and applying it to the blood pump. The blood pump flow field was simulated using CFD simulation software to ensure that this pump can produce pulsatile blood flow and guarantee good distribution of flow velocity, pressure, and shear stress in the blood pump. The hemolysis value of the pump was calculated using the Lagrangian particle tracking method. The research results demonstrate that this pump has excellent hemodynamic performance and that most of the shear stresses are less than 100 Pa, as well as a small hemolysis index. Furthermore, the pump combines the advantages of pulsatile and non-pulsatile pumps. This newly developed pump is expected to provide a new direction for ECMO blood pump development and provides important evidence for further optimization and performance evaluation of rotating piston blood pumps.
Study on the Photocatalytic Degradation of Tetracycline Using SrBi4Ti4O15 Nano Photocatalyst Prepared by Electrospinning Method
Authors: Wang Kai , Yu Xiaojiao , Liu Zongbin , Guo Xingru , Zhang Ting , Niu Jinfen , Yao Binhua 
Published: October 2023

Abstract
In this work, an efficient SrBi4Ti4O15 photocatalyst has been successfully synthesized by the electrospinning method. The photocatalytic activity of SrBi4Ti4O15 was estimated by TC as a simulated pollutant. The results of photocatalytic degradation experiments show that the factors such as catalyst dosage, initial concentration, inorganic salts, and water source can all affect the degradation efficiency of SrBi4Ti4O15 on TC. The active species capture test confirmed that h+ and •O2
- play a key role in the TC degradation progress. This work proposed a new direction for designing efficient catalysts for water pollution treatment using solar energy.
Preparation and Performance Evaluation of Quaternary Ammonium Cationic Clay Stabilizer for Oilfield Use
Authors: Xiao Sa , Lin Haonan , Peng Xuefei , Zhao Xing , Wang Gui 
Published: October 2023

Abstract
Acidizing is a crucial technique in the development of low permeability reservoirs in offshore oil fields. The introduction of acid into the formation can lead to the degradation of the clay mineral structure, causing the expansion and migration of clay particles that obstruct the flow of acid channels. The addition of a clay stabilizer with excellent properties can prevent the hydration and expansion of clay, as well as recover damage caused by long-term acidification, such as expansion, dispersion, and migration. To achieve this, the dendritic quaternary ammonium salt ZS-A was synthesized through a quaternization reaction, and subsequently used to develop the clay stabilizer ZSFP. In this study, the properties of clay stabilizer were investigated, including anti-swelling, acid and alkali resistance, water washing resistance, mudstone loss rate, and permeability retention. The results demonstrate that the ZSFP clay stabilizer performs well in terms of anti-swelling, acid-base compatibility, water washing resistance. This clay stabilizer can effectively reduce water-sensitive damage to the reservoir and protect it during acidizing operations.
Equipment layout modeling method for forging lines based on equipment profile layering method
Authors: Zhang Nan , Yuan Chao , Ding Xiaoyue , Zhang Hao , Liu Qingsheng 
Published: October 2023

Abstract
Forging equipment is equipped with an access platform with a size that significantly differs from that of the equipment body, so modeling methods such as envelopes and sequence pairs cannot be used to accurately describe the equipment or layout. In this paper, we propose a profile layering method for forging equipment, and establish a model of production line layout by setting a layering level using the Cartesian coordinate system, so as to lay a foundation for the subsequent research on interference detection, layout optimization and trajectory planning for production lines.
Fracture failure analysis of 5 “drill collar double shoulder external thread in a well
Authors: Hongtao Liu , Fangting Hu , Mifeng Zhao , Jialei Chen , Xianren Kuang , Tao Zhang , Zhengkai Shang 
Published: October 2023

Abstract
This article analyzes a well using 5 “Based on the analysis of the chemical composition of the drill collar, mechanical property testing, metallographic structure analysis, fracture morphology and energy spectrum analysis, as well as the analysis of the stress, bending strength ratio, and double shoulder structure of the drill collar, combined with the deviation of the well section where the drill collar fracture occurred and the drilling pressure during drilling, it is clear that the main reason for the failure of the drill collar is that there is a large well deviation in the area and the drilling pressure is not properly reduced, resulting in The drill collar undergoes severe bending alternating stress and initiates fatigue cracks and propagates at the root of 1-2 threads at the large end of the external thread.
Characterisation of impact resistance of composite reinforced by hybridised carbon-flax fibres in polyfurfuryl alcohol resin
Authors: Lu Yiling , Pawlik Marzena , Ganapathi Shishira P , Wood Paul , Gunputh Urvashi , Le Huirong 
Published: October 2023

Abstract
Research on polyfurfuryl alcohol (PFA) bioresin has increased due to its unique flame-retardant property. This study utilised the hybridisation of carbon and flax fibres in combination with PFA resin to make fibre-reinforced polymer (FRP) composites. The samples were tested for low-velocity impact at an energy of 20 Joules. Results showed that the fibres-hybridised PFA-based sample had higher energy absorption compared to the carbon-fibre only sample. More importantly, the hybridised sample retained almost the same amount of flexural modulus after impact, while carbon fibre only FRP sample lost more than 20% of its flexural modulus. This highlights the benefits of hybridisation in impact resistance and retention of mechanical properties post-impact in the presence of PFA resin, which is consistent with previous reports of epoxy-based FRP composites. In conclusion, the combination of fibre hybridisation and PFA bioresin presents a promising solution to meet strict flame-retardant requirements, impact resistance needs, and reduce environmental carbon footprint for engineering applications.
Determination of the ignorable boundary condition and standard sample for a novel in-situ dynamic mechanical analysis method on soft matter
Authors: Wu Longyan , Tang Lisheng , Huang Ran 
Published: October 2023

Abstract
An in-situ Dynamic Mechanical Analysis (DMA) method for soft matter developed by our group [Wu. et.al. 2022] encounters the problem of irregular samples, which significantly vary in shape and size in practice, therefore a standard sample “large enough” to ignore the boundary and size effects is necessary to determine the baseline of test and build the correspondence between this new method to classical mechanical tests. In this work, we use finite element analysis to approach the optimal size of a brick sample where the stress on the boundaries in three spatial directions are ignorable, and certified the results by testing a series of silicone gel samples on the in-situ DMA device. The stress-strain of tensile and compression are characterized. The material properties of gel are chosen to be close to the biological soft tissue. The size of 40mm(L)×40mm(W)×20mm(H) is determined to be the optimal result.
Edge Thomson scattering diagnostic with compact polychromators on the HL-3 Tokamak
Authors: Gong S.B. , Zhang T.C. , Guo W.P. , Hou Z.P. , Zhai W.Y. , Liu C.H. , Deng B.H. , Shi Z.B. , Chen W. , Zhong W.L. , Xu M. , Duan X.R. 
Published: October 2023

Abstract
The edge Thomson scattering (ETS) diagnostic with compact polychromators on the HL-3
Tokamak was developed recently. The energy and repetition frequency of the Nd: YAG laser are 2.0 J
and 30 Hz, respectively. The laser beam propagates vertically through the plasma region and the
scattered light is observed horizontally. The projected scattering region at the plasma midplane
is from 0.6 < r/a < 1.0. The 5-channel compact polychromator (width 432 mm, depth 472 mm
and height 88 mm) is developed to measure the Thomson scattering spectra. Modular design in the
power supply and the amplifier circuits simplifies the assembly and maintenance of the
polychromator. By using the new narrow band filters with cut-off depth larger than OD 4, the stray
light resulted from Nd: YAG laser has been suppressed by the polychromator. The signal to noise
ratio (SNR) range of each channel is from 10 to 200 depending on plasma parameters. The designed
electron temperature measurement range is from 5 to 1000 eV and electron density measurement range
is from 5 × 1018 to 1 × 1020 m-3. New measurement results of electron
temperature by ETS are compared with that from the electron cyclotron emission (ECE)
radiometer. The time evolution of ETS and ECE matches with each other in different plasma
discharges. Combined with the data from the core Thomson scattering diagnostic system, the plasma
electron temperature profile on the HL-3 tokamak is presented for the first time.
Note on intrinsic resolution in liquid organic scintillators
Authors: Smirnov O. 
Published: October 2023

Abstract
Fluctuations in photon production in scintillator could
contribute to the total energy resolution of a scintillation
detector. This contribution, called intrinsic resolution (IR), is
one of the factors limiting the total energy resolution in detectors
based on liquid organic scintillators (LSs). There are very few
experimental measurements of the IR in LSs available, and the
underlying physics is not completely understood. We propose a
phenomenological description of IR of LSs and systematize the data
available using a single universal parameter that characterizes
IR. We show that all experimental data within the model
demonstrate the presence of extra smearing of energy resolution due
to IR with a typical value of ≃ 2% at 1-MeV energy
release. The model can be used to simulate the effect of IR in
LS-based detectors.
A decoupled Bayesian method for snake robot control in unstructured environment
Authors: Jia Yuanyuan , Ma Shugen 
Published: October 2023

Abstract
This paper presents a method which avoids the common practice of using a complex coupled snake robot model and performing kinematic analysis for control in cluttered environments. Instead, we introduce a completely decoupled dynamical Bayesian formulation with respect to interacted snake robot links and environmental objects, which requires much lower complexity for efficient and robust control. When a snake robot does not interact with obstacles, it runs by a simple serpenoid controller. However, when it exhibits interaction with environments, defined as close proximity or collision with targets and/or obstacles, we extend the conventional Bayesian framework by modeling such interactions in terms of stimuli. The proposed ‘multi-neural-stimulus function’ represents the cumulative effect of both external environmental influences and internal constraints of the snake robot. It implicitly handles the ‘unexpected collision’ problem and thus solve the difficult data association and shape adjustment problems for snake robot control in an innovative way. Preliminary experimental results have demonstrated promising performance of the proposed method comparing with the state-of-the-art.
Exact sharp-fronted solutions for nonlinear diffusion on evolving domains
Authors: Johnston Stuart T , Simpson Matthew J 
Published: October 2023

Abstract
Models of diffusive processes that occur on evolving domains are frequently employed to describe biological and physical phenomena, such as diffusion within expanding tissues or substrates. Previous investigations into these models either report numerical solutions or require an assumption of linear diffusion to determine exact solutions. Unfortunately, numerical solutions do not reveal the relationship between the model parameters and the solution features. Additionally, experimental observations typically report the presence of sharp fronts, which are not captured by linear diffusion. Here we address both limitations by presenting exact sharp-fronted solutions to a model of degenerate nonlinear diffusion on a growing domain. We obtain the solution by identifying a series of transformations that converts the model of a nonlinear diffusive process on an evolving domain to a nonlinear diffusion equation on a fixed domain, which admits known exact solutions for certain choices of diffusivity functions. We determine expressions for critical time scales and domain growth rates such that the diffusive population never reaches the domain boundaries and hence the solution remains valid.
Symmetry structure of integrable hyperbolic third order equations
Authors: Rasin Alexander G , Schiff Jeremy 
Published: October 2023

Abstract
We explore the application of generating symmetries, i.e. symmetries that depend on a parameter, to integrable hyperbolic third order equations, and in particular to consistent pairs of such equations as introduced by Adler and Shabat in (2012 J. Phys. A: Math. Theor.
45 385207). Our main result is that different infinite hierarchies of symmetries for these equations can arise from a single generating symmetry by expansion about different values of the parameter. We illustrate this, and study in depth the symmetry structure, for two examples. The first is an equation related to the potential KdV equation taken from (Adler and Shabat 2012 J. Phys. A: Math. Theor.
45 385207). The second is a more general hyperbolic equation than the kind considered in (Adler and Shabat 2012 J. Phys. A: Math. Theor.
45 385207). Both equations depend on a parameter, and when this parameter vanishes they become part of a consistent pair. When this happens, the nature of the expansions of the generating symmetries needed to derive the hierarchies also changes.
Growth of aligned and twisted hexagonal boron nitride on Ir(110)
Authors: Michely Thomas , Bergelt Jason , Safeer Affan , Bäder Alexander , Hartl Tobias , Fischer Jeison 
Published: October 2023

Abstract
The growth of monolayer hexagonal boron nitride (h-BN) on Ir(110) through low-pressure chemical vapor deposition is investigated using low energy electron diffraction and scanning tunneling microscopy. We find that the growth of aligned h-BN on Ir(110) requires a growth temperature of 1500 K, whereas lower growth temperatures result in coexistence of aligned h-BN with twisted h-BN. The presence of the h-BN overlayer suppresses the formation of the nano-faceted ridge pattern known from clean Ir(110). Instead, we observe the formation of a

(
1
×
n
)

reconstruction, with n such that the missing rows are in registry with the h-BN/Ir(110) moiré pattern. Our moiré analysis showcases a precise methodology for determining both the moiré periodicity and the h-BN lattice parameter on an fcc(110) surface. Aligned h-BN on Ir(110) is found to be slightly compressed compared to bulk h-BN, with a monolayer lattice parameter of

a

h
−
B
N

=
(
0.2489
±
0.0006
)

nm. The lattice mismatch with the substrate along

1

1
ˉ

0

gives rise to a moiré periodicity of

a

m

=
2.99
±
0.08

nm.
Extracting mechanical and microstructural properties of Cu–Zr thin film alloys by MEMS, AFM and ellipsometer
Authors: Alarifi Nahed , Al-Gawati Mahmoud A , Alnjiman Fahad , Albrithen Hamad , Alodhayb Abdullah N 
Published: October 2023

Abstract
The quantification of the atomic concentration ratios of thin-film metallic alloys having low atomic ordering is challenging, particularly if they are grown on similar metals and possess different surface chemistries. Micromechanical and optical methods have been used to correlate the elemental ratios with the mechanical and optical properties of the films. The room-temperature growth of Cu–Zn thin-film alloys with varying elemental ratios on cosputtered Si substrates was performed to obtain an amorphous film structure. X-ray diffraction patterns confirmed that the grown films exhibited a very short range ordering, suggesting an amorphous structure. The mechanical properties of the films evaluated using microelectromechanical system (MEMS) indicated that the alloy films with moderate Zr concentrations had lower surface stress compared to those with low and high Zr concentrations. Furthermore, spectroscopic ellipsometry was employed to qualitatively assess the relaxation times of free carriers. The results demonstrated a strong correlation between the relaxation times and surface roughness measurements, showing that the microstructure and resistivity characteristics of the alloys align with the Nordheim semiempirical model. The extinction coefficient of the binary alloy film linearly depends on the metallic bulk concentration ratio in a specific metallic ratio range, paving the way for realizing qualitative elemental percentage assessment in the field of metrology.
Solid solution softening at room temperature and hardening at elevated temperatures: a case by minor Mn addition in a (HfNbTi)85Mo15 refractory high entropy alloy
Authors: Li Xiaolong , Ding Mao , Hu Qiang , Liu Zhiyuan , Mao Huahai , Guo Sheng 
Published: October 2023

Abstract
To address the conflict between room-temperature (RT) ductility and high-temperature (HT) strength in single phase bcc-structured refractory high entropy alloys, here we propose to use minor alloying to achieve solid solution softening at RT and simultaneously, solid solution hardening at HT. Our strategy was manifested by minor Mn additions in a RT brittle (HfNbTi)85Mo15 refractory high entropy alloy, where nominal Mn additions ranging from 2 at. % down to 0.03 at. % were seen to soften the base (HfNbTi)85Mo15 alloy at RT, while to harden the base alloy at the temperature range from 400 to 800 °C. The yield stress in all studied alloys showed a three-stage pattern, characterized by a temperature dependent stage at temperatures below 400 °C, followed by a temperature independent stage at intermediate temperatures ranging from 400 to 800 °C, and finally another temperature dependent stage at temperatures higher than 800 °C. The mechanisms for solid solution softening and solid solution hardening in single phase bcc-structured refractory high entropy alloys were discussed, together with their temperature dependence.