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  • Open Access

    REVIEW

    Smoothed Particle Hydrodynamics (SPH) Simulations of Drop Evaporation: A Comprehensive Overview of Methods and Applications

    Leonardo Di G. Sigalotti*, Carlos A. Vargas

    CMES-Computer Modeling in Engineering & Sciences, Vol.142, No.3, pp. 2281-2337, 2025, DOI:10.32604/cmes.2025.060497 - 03 March 2025

    Abstract The evaporation of micrometer and millimeter liquid drops, involving a liquid-to-vapor phase transition accompanied by mass and energy transfer through the liquid-vapor interface, is encountered in many natural and industrial processes as well as in numerous engineering applications. Therefore, understanding and predicting the dynamics of evaporating flows have become of primary importance. Recent efforts have been addressed using the method of Smoothed Particle Hydrodynamics (SPH), which has proven to be very efficient in correctly handling the intrinsic complexity introduced by the multiscale nature of the evaporation process. This paper aims to provide an overview of… More > Graphic Abstract

    Smoothed Particle Hydrodynamics (SPH) Simulations of Drop Evaporation: A Comprehensive Overview of Methods and Applications

  • Open Access

    ARTICLE

    Modeling and Experimental Study of an Open Two-Phase Loop Driven by Osmotic Pressure and Capillary Force

    Hanli Bi1, Zheng Peng2, Chenpeng Liu3, Zhichao Jia1, Guoguang Li1, Yuandong Guo2, Hongxing Zhang1,*, Jianyin Miao1

    Frontiers in Heat and Mass Transfer, Vol.23, No.1, pp. 55-70, 2025, DOI:10.32604/fhmt.2024.057933 - 26 February 2025

    Abstract As space technology advances, thermal control systems must effectively collect and dissipate heat from distributed, multi-source environments. Loop heat pipe is a highly reliable two-phase heat transfer component, but it has several limitations when addressing multi-source heat dissipation. Inspired by the transport and heat dissipation system of plants, large trees achieve stable and efficient liquid supply under the influence of two driving forces: capillary force during transpiration in the leaves (pull) and root pressure generated by osmotic pressure in the roots (push). The root pressure provides an effective liquid supply with a driving force exceeding… More >

  • Open Access

    ARTICLE

    Addressing Imbalance in Health Datasets: A New Method NR-Clustering SMOTE and Distance Metric Modification

    Hairani Hairani1,2, Triyanna Widiyaningtyas1,*, Didik Dwi Prasetya1, Afrig Aminuddin3

    CMC-Computers, Materials & Continua, Vol.82, No.2, pp. 2931-2949, 2025, DOI:10.32604/cmc.2024.060837 - 17 February 2025

    Abstract An imbalanced dataset often challenges machine learning, particularly classification methods. Underrepresented minority classes can result in biased and inaccurate models. The Synthetic Minority Over-Sampling Technique (SMOTE) was developed to address the problem of imbalanced data. Over time, several weaknesses of the SMOTE method have been identified in generating synthetic minority class data, such as overlapping, noise, and small disjuncts. However, these studies generally focus on only one of SMOTE’s weaknesses: noise or overlapping. Therefore, this study addresses both issues simultaneously by tackling noise and overlapping in SMOTE-generated data. This study proposes a combined approach of… More >

  • Open Access

    ARTICLE

    Enhancing Network Security: Leveraging Machine Learning for Integrated Protection and Intrusion Detection

    Nada Mohammed Murad1, Adnan Yousif Dawod2, Saadaldeen Rashid Ahmed3,4,*, Ravi Sekhar5, Pritesh Shah5

    Intelligent Automation & Soft Computing, Vol.40, pp. 1-27, 2025, DOI:10.32604/iasc.2024.058624 - 10 January 2025

    Abstract This study introduces an innovative hybrid approach that integrates deep learning with blockchain technology to improve cybersecurity, focusing on network intrusion detection systems (NIDS). The main goal is to overcome the shortcomings of conventional intrusion detection techniques by developing a more flexible and robust security architecture. We use seven unique machine learning models to improve detection skills, emphasizing data quality, traceability, and transparency, facilitated by a blockchain layer that safeguards against data modification and ensures auditability. Our technique employs the Synthetic Minority Oversampling Technique (SMOTE) to equilibrate the dataset, therefore mitigating prevalent class imbalance difficulties… More >

  • Open Access

    ARTICLE

    Steel Surface Defect Detection Using Learnable Memory Vision Transformer

    Syed Tasnimul Karim Ayon1,#, Farhan Md. Siraj1,#, Jia Uddin2,*

    CMC-Computers, Materials & Continua, Vol.82, No.1, pp. 499-520, 2025, DOI:10.32604/cmc.2025.058361 - 03 January 2025

    Abstract This study investigates the application of Learnable Memory Vision Transformers (LMViT) for detecting metal surface flaws, comparing their performance with traditional CNNs, specifically ResNet18 and ResNet50, as well as other transformer-based models including Token to Token ViT, ViT without memory, and Parallel ViT. Leveraging a widely-used steel surface defect dataset, the research applies data augmentation and t-distributed stochastic neighbor embedding (t-SNE) to enhance feature extraction and understanding. These techniques mitigated overfitting, stabilized training, and improved generalization capabilities. The LMViT model achieved a test accuracy of 97.22%, significantly outperforming ResNet18 (88.89%) and ResNet50 (88.90%), as well… More >

  • Open Access

    ARTICLE

    An SPH Framework for Earthquake-Induced Liquefaction Hazard Assessment of Geotechnical Structures

    Sourabh Mhaski*, G. V. Ramana

    CMES-Computer Modeling in Engineering & Sciences, Vol.142, No.1, pp. 251-277, 2025, DOI:10.32604/cmes.2024.055963 - 17 December 2024

    Abstract Earthquake-induced soil liquefaction poses significant risks to the stability of geotechnical structures worldwide. An understanding of the liquefaction triggering, and the post-failure large deformation behaviour is essential for designing resilient infrastructure. The present study develops a Smoothed Particle Hydrodynamics (SPH) framework for earthquake-induced liquefaction hazard assessment of geotechnical structures. The coupled flow-deformation behaviour of soils subjected to cyclic loading is described using the PM4Sand model implemented in a three-phase, single-layer SPH framework. A staggered discretisation scheme based on the stress particle SPH approach is adopted to minimise numerical inaccuracies caused by zero-energy modes and tensile… More >

  • Open Access

    ARTICLE

    Mycorrhizal Synthesis and Physiological Responses of Entoloma clypeatum and Three Rosaceae Fruit Trees

    Chen Hao, Chunfeng Mu, Xinyan Yu, Xiaoran Chen, Mengmeng Zhu, Jianrui Wang*, Yu Liu*

    Phyton-International Journal of Experimental Botany, Vol.93, No.12, pp. 3549-3572, 2024, DOI:10.32604/phyton.2024.056114 - 31 December 2024

    Abstract Entoloma clypeatum, a kind of edible ectomycorrhizal fungus, can be usually symbiotic with Rosaceae fruit trees. Fruit trees have become an important part of China’s agriculture. The present work focused on exploring how E. clypeatum affected symbiotic Rosaceae plants and establishing a symbiotic culture with Malus robusta, Pyrus betulifolia and Prunus armeniaca rootstocks. The results showed that E. clypeatum and three Rosaceae plants can generate cylindrical or clavate mycorrhizae. The inoculation treatment had different degrees of positive effects on the three plants. Relative to the non-inoculated group, biomass in symbiotic plants increased (32.8%–191.1%), and photosynthesis enhanced. In the level of… More >

  • Open Access

    ARTICLE

    RE-SMOTE: A Novel Imbalanced Sampling Method Based on SMOTE with Radius Estimation

    Dazhi E1, Jiale Liu2, Ming Zhang1,*, Huiyuan Jiang2, Keming Mao2

    CMC-Computers, Materials & Continua, Vol.81, No.3, pp. 3853-3880, 2024, DOI:10.32604/cmc.2024.057538 - 19 December 2024

    Abstract Imbalance is a distinctive feature of many datasets, and how to make the dataset balanced become a hot topic in the machine learning field. The Synthetic Minority Oversampling Technique (SMOTE) is the classical method to solve this problem. Although much research has been conducted on SMOTE, there is still the problem of synthetic sample singularity. To solve the issues of class imbalance and diversity of generated samples, this paper proposes a hybrid resampling method for binary imbalanced data sets, RE-SMOTE, which is designed based on the improvements of two oversampling methods parameter-free SMOTE (PF-SMOTE) and… More >

  • Open Access

    PROCEEDINGS

    Parameter Identification of Biphasic Hyperelastic Constitutive Model with Osmotic Pressure Based on VFM

    Ruike Shi1, Haitian Yang1, Yue Mei1, Yiqian He1,2,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.3, pp. 1-1, 2024, DOI:10.32604/icces.2024.012458

    Abstract Soft biological tissues, like cartilage or arteries, are often modeled as biphasic, considering both solid matrix and interstitial fluid [1]. This biphasic behavior involves chemo-mechanical couplings that control interstitial fluid osmotic pressure [2]. Therefore, the research on the inverse problems of osmotic pressure in soft tissues is important. In this paper, the authors propose a virtual fields method (VFM) for identifying the constitutive model of solid-liquid biphasic hyperelasticity. This method constructs virtual fields based on finite elements (FE) to solve linearly independent virtual fields that can automatically satisfy constraint conditions of the solution of VFM.… More >

  • Open Access

    PROCEEDINGS

    Boundary Data Immersion Method for the Simulation of Fluid-Structure Interaciton Based on DGM

    Yuxiang Peng1,*, Pengnan Sun1, Niannian Liu1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.3, pp. 1-1, 2024, DOI:10.32604/icces.2024.011902

    Abstract Immersed boundary method (IBM) has been widely applied in the simulation of fluid-structure interaction problems. The traditional direct force model is less accurate, and the sharp-interface approaches involve complex topological operations which are not conducive to dealing with complex structures. The boundary data immersion method (BDIM) is a new fluid-structure coupling scheme that does not need to cut the mesh and can be extended to reach second-order accuracy. However, the traditional boundary data immersion method needs special treatment to deal with the sharp corners of the structure. In the present work, the volume fraction of More >

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