A numerical approach is an effective means of solving boundary value problems(BVPs).This study focuses on physical problems with general partial differential equations(PDEs).It investigates the solution approach throu...A numerical approach is an effective means of solving boundary value problems(BVPs).This study focuses on physical problems with general partial differential equations(PDEs).It investigates the solution approach through the standard forms of the PDE module in COMSOL.Two typical mechanics problems are exemplified:The deflection of a thin plate,which can be addressed with the dedicated finite element module,and the stress of a pure bending beamthat cannot be tackled.The procedure for the two problems regarding the three standard forms required by the PDE module is detailed.The results were in good agreement with the literature,indicating that the PDE module provides a promising means to solve complex PDEs,especially for those a dedicated finite element module has yet to be developed.展开更多
Water,the source of life,contains immense energy and manifests in diverse forms.Hydrovoltaic technology enables the direct interaction between water and materials to generate electricity,a vital necessity for industry...Water,the source of life,contains immense energy and manifests in diverse forms.Hydrovoltaic technology enables the direct interaction between water and materials to generate electricity,a vital necessity for industry modernization.Due to the ubiquitous presence and easy availability of falling water,hydrovoltaic energy derived from water droplets has attracted considerable attention and shown great potential in raindrop energy harvesting.In this review,a comprehensive summary of the latest advancements in harvesting hydrovoltaic energy from water droplets is presented,with a focus on the configurations and underlying mechanisms of hydrovoltaic devices.Additionally,a brief discussion on the applications of dropletbased hydrovoltaic devices is presented,along with future prospects for this energyharvesting technology.展开更多
Electricity from clean and renewable resources is a promising solution to address the growing energy crisis.Water,an abundant and widely distributed substance on the planet,contains tremendous energy[1,2].Recently,it ...Electricity from clean and renewable resources is a promising solution to address the growing energy crisis.Water,an abundant and widely distributed substance on the planet,contains tremendous energy[1,2].Recently,it was demonstrated that electricity can be generated directly through the interaction between water and nanostructured materials,termed as the hydrovoltaic effect[3],facilitating energy harvesting from water.In particular,it was found that the natural evaporation of water can sustainably generate an electric voltage of up to 1 V across a carbon black film[4].展开更多
基金supported by the National Natural Science Foundations of China(Grant Nos.12372073 and U20B2013)the Natural Science Basic Research Program of Shaanxi(Program No.2023-JC-QN-0030).
文摘A numerical approach is an effective means of solving boundary value problems(BVPs).This study focuses on physical problems with general partial differential equations(PDEs).It investigates the solution approach through the standard forms of the PDE module in COMSOL.Two typical mechanics problems are exemplified:The deflection of a thin plate,which can be addressed with the dedicated finite element module,and the stress of a pure bending beamthat cannot be tackled.The procedure for the two problems regarding the three standard forms required by the PDE module is detailed.The results were in good agreement with the literature,indicating that the PDE module provides a promising means to solve complex PDEs,especially for those a dedicated finite element module has yet to be developed.
基金National Natural Science Foundation of China,Grant/Award Numbers:12150002,12172176,12272181National Key Research and Development Program of China,Grant/Award Number:2019YFA0705400+3 种基金Natural Science Foundation of Jiangsu Province,Grant/Award Numbers:T2293691,BK20220074,BK20212008,BK20211191Research Fund of State Key Laboratory of Mechanics and Control for Aerospace Structures,Grant/Award Numbers:MCMS‐I‐0421G01,MCMS‐I‐0421K01,MCMS‐I‐0422K01Fundamental Research Funds for the Central Universities,Grant/Award Numbers:NE2023003,NJ2022002,NC2023001,NJ2023002Fund of Prospective Layout of Scientific Research for NUAA(Nanjing University of Aeronautics and Astronautics)。
文摘Water,the source of life,contains immense energy and manifests in diverse forms.Hydrovoltaic technology enables the direct interaction between water and materials to generate electricity,a vital necessity for industry modernization.Due to the ubiquitous presence and easy availability of falling water,hydrovoltaic energy derived from water droplets has attracted considerable attention and shown great potential in raindrop energy harvesting.In this review,a comprehensive summary of the latest advancements in harvesting hydrovoltaic energy from water droplets is presented,with a focus on the configurations and underlying mechanisms of hydrovoltaic devices.Additionally,a brief discussion on the applications of dropletbased hydrovoltaic devices is presented,along with future prospects for this energyharvesting technology.
基金supported by the National Key Research and Development Program of China (2019YFA0705400)the National Natural Science Foundation of China (12150002, 12172176, 12002158,52002175, and 11802121)+4 种基金the Natural Science Foundation of Jiangsu Province (BK20212008 and BK20211191)the Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures (MCMS-I-0421G01 and MCMS-I-0421K01)China Postdoctoral Science Foundation(2018T110494, 2020TQ0146, and 2021M701703)the Fundamental Research Funds for the Central Universities (NE2020001, NJ2020003, NZ2020001, and NS2021042)a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions。
文摘Electricity from clean and renewable resources is a promising solution to address the growing energy crisis.Water,an abundant and widely distributed substance on the planet,contains tremendous energy[1,2].Recently,it was demonstrated that electricity can be generated directly through the interaction between water and nanostructured materials,termed as the hydrovoltaic effect[3],facilitating energy harvesting from water.In particular,it was found that the natural evaporation of water can sustainably generate an electric voltage of up to 1 V across a carbon black film[4].
