Article
Geochemistry & Geophysics
Hong Li, Haiyang Yu, Nai Cao, Shiqing Cheng, He Tian, Shiying Di
Summary: The study suggests that it is challenging to characterize complex reservoirs using a homogeneous permeability model, and a heterogeneous model that considers permeability differences in tight reservoirs is preferred. Formation fluids coexist in multiple phases, and water saturation has a direct effect on production.
Article
Construction & Building Technology
Roberto Serpieri, Michela Monaco
Summary: In order to enhance sustainability, reliable methodologies are needed to estimate the service-life and maintenance periodicity of concrete structures, in order to reduce harm to the environment and societal costs. The watertightness of concrete is crucial for assessing its durability against weather exposure and is mainly determined by the permeability of the cement paste. A model is proposed in this study to enhance the assessment of permeability by considering capillary percolation and simultaneous flow at the gel and capillary scales.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Thermodynamics
Zeyu Guo, Qidong Fang, Mingyan Nong, Xingwei Ren
Summary: The study proposed an innovative permeability-hydrate saturation model based on Poiseuille's law and the Kozeny-Carman equation, which was verified to have satisfactory performance in predicting the permeability of hydrate-bearing sediments. The normalized permeability decreases non-linearly as void ratio increases for a given hydrate saturation, with higher sensitivity at high hydrate saturation. The model can capture the main feature of permeability with hydrate saturation for coarse-grained hydrate-bearing sediments.
Article
Engineering, Civil
Peijie Yin, Huihui Song, Hairui Ma, Wuchao Yang, Zhi He, Xiaonan Zhu
Summary: In this study, the permeability of porous media with sphere packing is investigated using the lattice Boltzmann method (LBM) and experimental studies. The accuracy of LBM is verified and the effects of porosity and particle size on permeability are studied. A modified Kozeny-Carman equation is proposed and validated through experimental tests.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Civil
Pei-Ning Li, Ye-Shuang Xu, Xu-Wei Wang
Summary: This study proposes a new modified K-C equation considering the derivation principle of the original K-C equation. By applying Poiseuille's law in porous media, the concept of 2D porosity (epsilon) and a correction coefficient for permeation (f) are presented. The parameters in the new modified K-C equation include specific surface area (S-0), tortuosity (1/cos theta), and ne. The prediction formulas for S-0 and 1/cos theta are deduced and verified by comparing them with established formulas and experimental data. The new modified K-C equation is adequate for predicting hydraulic conductivity for clay and sand by comparing it with experimental values and other established modified K-C equations.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Civil
Talita R. Ferreira, Nathaly L. Archilha, Luiz F. Pires
Summary: This study compares three XCT-based methods for estimating the permeability of soil aggregates and suggests calibrating faster methods against a slower but more reliable reference method using at least one 3D image. APES and PNM were found to be more time consuming than IBP-KC, with PNM being sensitive to thin pore ramifications.
JOURNAL OF HYDROLOGY
(2022)
Article
Mechanics
Zhaoqin Huang, Hao Wang, Xin Su, Weiwei Liao
Summary: This paper presents a two-scale fractal permeability model for natural vuggy porous media based on the fractal characteristics of interparticle pores and vugs. The results show that the predicted permeability varies within a certain range, with the maximum permeability occurring when larger vugs match with larger capillary tubes and the minimum permeability occurring in the opposite case. The validity of the proposed model is verified by comparing with experimental results and reference data in the literature. Parameter sensitivity analysis indicates that the fractal dimension and tortuosity of capillary tubes, as well as the maximum diameter of capillary tubes and vugs, have significant effects on the predicted permeability.
Article
Green & Sustainable Science & Technology
Vahab Amiri, Nassim Sohrabi, Peiyue Li, Saurabh Shukla
Summary: This study presents the first attempt in Iran to estimate hydraulic conductivity and porosity using a combination of electrical resistivity measurement, pumping tests, and stochastic modeling. The results show significant heterogeneity and anisotropy in the aquifer, leading to variations in the values of hydraulic conductivity and porosity at different locations.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Engineering, Civil
Jidong Teng, Antai Dong, Han Yan, Chenxi Tong, Sheng Zhang
Summary: In this study, a new hydraulic conductivity model for frozen coarse-grained soils is proposed based on the pattern of ice formation from the pore wall. The model shows better prediction results compared to existing models, particularly for sand. It can serve as a useful tool for simulating water-heat transfer process in cold regions.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Civil
Jidong Teng, Han Yan, Sihao Liang, Sheng Zhang, Daichao Sheng
Summary: The study developed a new hydraulic conductivity model for frozen soils based on the Kozeny-Carman equation, which can be used to explain the migration of water and heat in frozen soils compared to unfrozen soils. Parametric analysis revealed that unfrozen water saturation and shape coefficient ratio are important parameters affecting hydraulic conductivity. The proposed model can also be simplified to a power function for easy use.
JOURNAL OF HYDROLOGY
(2021)
Article
Geochemistry & Geophysics
Jinsui Wu, Min Xing, Shangxian Yin, Ciyuan Zhang, Xuexi Chen, Sihai Yi, Huiqing Lian, Dongyu Xie
Summary: The microstructure and permeability of low-permeability sandstone samples obtained from North China were studied using digital core technology. The researchers collected rock images using X-ray microcomputed tomography (mu CT) and analyzed the microstructure to calculate parameters such as porosity, connected porosity, average equivalent diameter, tortuosity, and shape factor. By introducing the shape factor into the Kozeny-Carman equation, they modified the equation to include porosity, particle diameter, tortuosity, and particle shape factor.
Article
Geosciences, Multidisciplinary
Mohab Dessouki, Lori Hathon, Michael Myers
Summary: Mudrocks exhibit complex petrophysical properties influenced by factors such as cation exchange capacity and bound water. Permeability of different mudrock samples is largely determined by clay mineral CEC and initial pore fluid salinity. Models like the Carman-Kozeny model and the staged differential effective medium model have been developed to explain these variations and show good predictive capabilities.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Thermodynamics
Didi Wu, Shuxia Li, Ningtao Zhang, Yang Guo, Lu Liu, Zhiqiang Wang
Summary: In this paper, a novel normalized permeability model was established to capture the dynamic characteristic of permeability in hydrate-bearing sediments. The model was verified and compared with existing models using different published data. Results showed that the proposed model was more powerful and better captured the permeability evolution in hydrate-bearing sediments at various conditions.
Article
Engineering, Civil
Yu Zhong, Annan Zhou, Jiapei Du, Jidong Teng, Shui-long Shen
Summary: This study modifies the classical KC equation to consider the influence of clay surface characteristics and nanoscale pores on the saturated hydraulic conductivity in clayey soils. Through molecular dynamics modeling, a specific function is proposed to quantify the adsorbed proportion, and the modified equation is validated with experimental data, showing high accuracy.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Chemical
Zeyu Feng, Yuping Fan, Xianshu Dong, Xiaomin Ma, Ruxia Chen
Summary: The separation of particulate solids from liquids by filtration is crucial in industrial processes. The microstructure and permeability of filter cake are important factors influencing fluid flow efficiency and mass transfer. Through filtration tests and simulation analysis, it is discovered that the fluid flux in filter cake is strongly related to the width of main channels, and improving pore connectivity and size is more effective in enhancing cake permeability than increasing porosity and number of pores.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Water Resources
H. Plihal, F. Kretschmer, M. T. Bin Ali, C. H. See, A. Romanova, K. V. Horoshenkov, Th. Ertl
URBAN WATER JOURNAL
(2016)
Article
Acoustics
Kirill V. Horoshenkov, Timothy Van Renterghem, Andrew Nichols, Anton Krynkin
Article
Engineering, Civil
Andrew Nichols, Simon J. Tait, Kirill V. Horoshenkov, Simon J. Shepherd
JOURNAL OF HYDRAULIC RESEARCH
(2016)
Article
Acoustics
Kirill V. Horoshenkov, Jean-Philippe Groby, Olivier Dazel
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2016)
Article
Acoustics
Anton Krynkin, Kirill V. Horoshenkov, Timothy Van Renterghem
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2016)
Article
Mechanics
G. Dolcetti, K. V. Horoshenkov, A. Krynkin, S. J. Tait
Article
Materials Science, Characterization & Testing
Paolo Bonfiglio, Francesco Pompoli, Kirill V. Horoshenkov, Mahmud Iskandar B. Seth A. Rahim
Article
Acoustics
Francesco Pompoli, Paolo Bonfiglio, Kirill V. Horoshenkov, Amir Khan, Luc Jaouen, Francois-Xavier Becot, Franck Sgard, Francesco Asdrubali, Francesco D'Alessandro, Joern Huebelt, Noureddine Atalla, Celse K. Amedin, Walter Lauriks, Laurens Boeckx
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2017)
Review
Acoustics
Kirill V. Horoshenkov
INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION
(2017)
Article
Chemistry, Analytical
Anna V. Romanova, Kirin V. Horoshenkov, Anton Krynkin
Article
Engineering, Civil
Zhihua Xie, Binliang Lin, Roger A. Falconer, Andrew Nichols, Simon J. Tait, Kirill V. Horoshenkov
Summary: This paper presents a large-eddy simulation study of turbulent free surface flow over a natural rough bed, investigating the effects of roughness on turbulence properties and free surface dynamics. The study successfully compares predicted results with experimental data, revealing that roughness on the bed generates small waves on the free surface in cases of low submergence.
JOURNAL OF HYDRAULIC RESEARCH
(2022)
Article
Acoustics
Wenhao Xu, Kirill Horoshenkov, Yun Jin
Summary: The ability of a thin porous layer to absorb noise at greater wavelengths than its thickness is limited. However, a 120 μm cellulose membrane can double the sound absorption coefficient of a 17.4 mm layer of melamine foam at frequencies above 600 Hz. Simulation models accurately predict the acoustic behavior of the cellulose membrane combined with melamine foam. The flow resistivity and thickness of the cellulose fiber membrane also affect the acoustic absorption coefficient of the melamine foam substrate.
BUILDING ACOUSTICS
(2023)
Article
Engineering, Civil
Fabio Muraro, Giulio Dolcetti, Andrew Nichols, Simon J. Tait, Kirill Horoshenkov
Summary: In the last two decades, there has been a considerable increase in interest in the free-surface behaviour of gravity-driven shallow turbulent flows. Observing free-surface behaviour is believed to provide useful information about the hydrodynamic characteristics of the flow and enables remote monitoring of river flows. This paper reviews the state-of-art in this area, aiming to gather relevant information, use uniform terminology, and analyze gaps in knowledge about the linkages between free-surface behaviour and underlying hydrodynamic processes.
JOURNAL OF HYDRAULIC RESEARCH
(2021)
Article
Acoustics
Jevgenija Prisutova, Kirill Horoshenkov, Bruno Brouard, Jean-Philippe Groby
Article
Acoustics
Cailiang Zhang, Zhihui Lai, Zhisheng Tu, Hanqiu Liu, Yong Chen, Ronghua Zhu
Summary: This paper proposes two single-parameter-adjusting SR models to optimize the output performance of SR systems. The effects of the proposed models on SR output under different parameters and signals are investigated through numerical simulations, and their feasibility is verified through experimental results. The research results are of great significance for guiding the design of tri-stable SR models and the application of SR-based signal processing in the context of big data.
Article
Acoustics
Shaoqiong Yang, Hao Chang, Yanhui Wang, Ming Yang, Tongshuai Sun
Summary: In this study, a suspension system based on phononic crystals is designed for vibration isolation of acoustic loads in underwater gliders. The vibration properties of the phononic crystals and the effects of physical parameters on the underwater attenuation zones are investigated. Vibration tests show that the phononic crystal suspension system has a stable vibration isolation effect in the frequency range of 120-5000 Hz.
Article
Acoustics
Xuebin Zhang, Jun Zhang, Tao Liu, Ning Hu
Summary: This study proposes a tunable metamaterial beam to isolate flexural waves. A genetic algorithm-based size optimization is used to obtain a broad low-frequency bandgap. The tunability of the beam is achieved by attaching different numbers of permanent magnets to change the mass of the resonators. Additionally, ultra-broadband flexural wave attenuation is achieved by forming a gradient metamaterial beam based on the rainbow effect. Numerical and experimental results confirm the good flexural wave attenuation ability of the proposed beam.
Article
Acoustics
Luca Rapino, Francesco Ripamonti, Samanta Dallasta, Simone Baro, Roberto Corradi
Summary: This paper presents a method for simulating tyre/road noise using equivalent monopoles, including the synthesis of monopoles through an inverse problem approach and the use of an ISO 10844 road replica for laboratory testing. The method combines acoustic finite element models and numerical simulations of vehicles, and the results are validated by comparing them with measured data.
Article
Acoustics
Xiaoyan Zhu, Tin Oberman, Francesco Aletta
Summary: This paper explores the definition of acoustical heritage and proposes a multidimensional definition based on interviews with experts and detailed analysis of the data.
Article
Acoustics
Faeez Masurkar, Saurabh Aggarwal, Zi Wen Tham, Lei Zhang, Feng Yang, Fangsen Cui
Summary: This research focuses on estimating the elastic constants of orthotropic laminates using ultrasonic guided waves and inverse machine learning models. The results show that this approach has the potential to accurately predict the elastic constants of a material and reduce computational time.
Article
Acoustics
Feng Xiao, Haiquan Liu, Jia Lu
Summary: Diagnostic methods for cardiovascular disease based on heart sound classification have been widely studied due to their noninvasiveness, low-cost, and high efficiency. However, existing research often faces challenges such as the nonstationarity and complexity of heart sound signals, leading to limited capability of neural networks to extract discriminative features. To address these issues, this study proposes a novel convolutional neural network that combines 1D convolution and 2D convolution, and introduces an attention mechanism to enhance feature extraction capability. The study also explores the advantages and disadvantages of combining deep learning features with manual features, and adopts an evolving fuzzy system for decision-making interpretability.
Article
Acoustics
Hong Xu, Zhengyao He, Qiang Shi, Yushi Wang, Bo Zhang
Summary: This paper presents the development of a directional segmented ring transmitting transducer that can radiate sound waves in any horizontal region. The study focuses on the structure of the segmented ring transducer, its radiation sound field characteristics, and the beam pattern control method based on modal synthesis. The authors propose orthogonal beam pattern functions for adjusting steering angles and establish a three-dimensional finite element model to simulate the transmitting beam patterns. Experimental measurements and tests validate the effectiveness of the proposed transducer, showcasing its ability to steer the beam patterns to different directions.
Article
Acoustics
Jirui Yang, Shefeng Yan, Di Zeng, Gang Tan
Summary: This paper proposes an improved domain adaptation framework, self-supervised learning minimax entropy, to enhance the recognition performance of underwater target recognition models. The experimental results demonstrate that applying domain adaptation methods can effectively improve the recognition accuracy of the models under various marine conditions.
Article
Acoustics
Zonghan Sun, Jie Tian, Yuhang Zheng, Xiaocheng Zhu, Zhaohui Du, Hua Ouyang
Summary: This paper analyzes the noise reduction method of installing a sinusoidal-shaped inlet duct on a cooling fan through theoretical and experimental analysis of the acoustic mode modulation. The study establishes the correlation between the free field noise and acoustic mode of the fan rotor and the unsteady forces on the rotor blade surface. The results show that the sinusoidal-shaped inlet duct achieves greater noise reduction compared to a straight duct, especially at the blade passing frequency and its first harmonic.
Article
Acoustics
Min Li, Rumei Han, Hui Xie, Ruining Zhang, Haochen Guo, Yuan Zhang, Jian Kang
Summary: This study is part of a global collaboration to translate and standardise soundscape research. A reliable questionnaire for soundscape characterisation in Mandarin Chinese was developed and validated. The study found that salient sound sources become the focus of attention for individuals in urban open spaces, and the perception is also influenced by the acoustic characteristics of the soundscape. Certain types of sound sources play a more important role in soundscape perception.
Article
Acoustics
Arezoo Talebzadeh, Dick Botteldooren, Timothy Van Renterghem, Pieter Thomas, Dominique Van de Velde, Patricia De Vriendt, Tara Vander Mynsbrugge, Yuanbo Hou, Paul Devos
Summary: This study proposes a sound selection methodology to enhance the soundscape in nursing homes and reduce BPSD by analyzing sound characteristics and recognition methods. The results highlight the sound characteristics that lead to positive responses, while also pointing out the need for further studies to understand which sounds are most suitable for people with dementia.
Article
Acoustics
Yang Yang, Yongxin Yang, Zhigang Chu
Summary: This paper introduces a grid-free compressive beamforming method compatible with arbitrary linear microphone arrays, and demonstrates the correctness and superiority of the proposed method through examples. Monte Carlo simulations are performed to reveal the effects of source coherence, source separation, noise, and number of snapshots.
Article
Acoustics
Sukru Selim Calik, Ayhan Kucukmanisa, Zeynep Hilal Kilimci
Summary: Computer-Aided Language Learning (CALL) is growing rapidly due to the importance of acquiring proficiency in multiple languages for effective communication. In the field of CALL, the detection of mispronunciations is vital for non-native speakers. This research introduces a novel framework using audio-centric transformer models to detect mispronunciations in Arabic phonemes. The results demonstrate that the UNI-SPEECH transformer model yields notable classification outcomes in Arabic phoneme mispronunciation detection. The comprehensive comparison of these transformer models provides valuable insights and guidance for future investigations in this domain.
Article
Acoustics
Yi-Yang Ni, Fei-Yun Wu, Hui-Zhong Yang, Kunde Yang
Summary: This paper proposes an improved method for compressive sensing by introducing a self training dictionary scheme and a CS reconstruction method based on A*OLS, which enhances the sparse representation performance of propeller signals.
