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中国科学院北京纳米能源与系统研究所【Energy & Environmental Science】基于超材料结构的三维手性摩擦纳米发电机网络（图）
材料结构 三维手性摩擦 纳米发电机 网络
2024/3/27
当前气候问题逐渐成为世界面临的主要挑战之一，加快发展清洁能源对实现可持续发展具有重要意义，也是全球各国的共识。作为海洋中的主要可再生清洁能源储备之一，波浪能具有分布广泛、储量巨大的特点。开发利用波浪能是优化全球能源结构和实现碳中和的重要途径之一，然而，其在技术上也面临着极大的挑战。摩擦纳米发电机（triboelectric nanogenerator，TENG）为波浪能收集及其它海洋蓝色能源开发提...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Energy Concentration and Weak Stability in Fluid Dynamics
流体动力学 能量集中 弱稳定性
2023/4/14
The weak stability is an important issue in fluid dynamics. We will discuss the mathematical understudying of concentration phenomena in the framework of weak solutions with either critical or subcrit...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Energy estimates for the two-dimensional acoustical rarefaction waves
二维声稀波 能量估计 无旋
2023/4/18
We study the two-dimensional acoustical rarefaction waves under the irrotational assumptions. We provide a new energy estimates without loss of derivatives. We also give a detailed geometric descripti...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Energy-preserving Mixed Finite Element Methods for a Ferrofluid Flow Model
铁磁流体 流动模型 节能混合 有限元方法
2023/4/27
We develop a class of mixed finite element methods for the ferrofluid flow model proposed by Shliomis [Soviet Physics JETP, 1972]. We show that the energy stability of the weak solutions to the model ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：A decoupled, linear, and unconditionally energy stable finite element method for a two-phase ferrohydrodynamics model
两相铁 流体动力学模型 无条件能量稳定 有限元方法
2023/4/28
In this talk, we present numerical approximations of a phase-field model for two-phase ferrofluids, which consists of the Navier-Stokes equations, the Cahn-Hilliard equation, the magnetostatic equatio...
力学与工程科学学院流体力学博士研究生邓莹在卢志明和王伯福教授的指导下，在国际著名学术期刊《Energy Conversion and Management》（影响因子：7.18，工程技术1区）上发表题为《A hybrid model based on data preprocessing strategy and error correction system for wind speed for...
Energy Stable Flux Reconstruction Schemes for Advection–Diffusion Problems on Tetrahedra
High-order Unstructured Discontinuous Galerkin Spectral difference Flux reconstruction · Tetrahedra
2015/7/3
The flux reconstruction (FR) methodology provides a unifying description of many high-order schemes, including a particular discontinuous Galerkin (DG) scheme and several spectral difference (SD...
An Extension of Energy Stable Flux Reconstruction to Unsteady,Non-linear,Viscous Problems on Mixed Grids
Extension Energy Stable Flux Reconstruction Unsteady Non-linear Viscous Problems Mixed Grids
2015/7/3
This paper extends the high-order Flux Reconstruction (FR) approach to the treatment of non-linear diffusive fluxes on triangles. The FR approach for solving diffusion problems is re...
Application of High-Order Energy Stable Flux Reconstruction Schemes to the Euler Equations
High-Order Energy Stable Flux Reconstruction Schemes Euler Equations
2015/7/3
The authors recently identified an infinite range of high-order energy stable flux reconstruction (FR) schemes in 1D and on triangular elements in 2D. The new flux reconstructi...
Energy Estimates for Nonlinear Conservation Laws with Applications to Solutions of the Burgers Equation and One-Dimensional Viscous Flow in a Shock Tube by Central Difference Schemes
Energy Estimates Nonlinear Conservation Laws Applications Solutions Burgers Equation One-Dimensional Viscous Flow
2015/7/2
A prime focus in the development of computational fluid dynamics (CFD) for aeronautics has been the simulation of transonic and supersonic flows which generally contain shock waves, contac...
Formulation of Kinetic Energy Preserving Conservative Schemes for Gas Dynamics and Direct Numerical Simulation of One-Dimensional Viscous Compressible Flow in a Shock Tube Using Entropy and Kinetic Energy Preserving Schemes
Preserving Conservative Schemes Gas Dynamics Direct Numerical Simulation One-Dimensional Viscous Compressible Flow
2015/7/2
This paper follows up on the author’s recent paper “The Construction of Discretely Conservative Finite Volume Schemes that also Globally Conserve Energy or Enthalpy”.
The Construction of Discretely Conservative Finite Volume Schemes that Also Globally Conserve Energy or Entropy
Construction Finite Volume Schemes Also Globally Conserve Energy
2015/7/2
Throughout the history of the development of discrete methods for linear and nonlinear conservation laws, and in particular computational fluid dynamics, there has been an ongoing struggle to &#...
On the mechanical energy and effective stress in saturated and unsaturated porous continua
mechanical energy effective stress saturated and unsaturated porous continua
2015/7/1
This paper has two objectives: (a) to formulate a mechanical theory of porous continua within the framework of strong discontinuity concept commonly employed for the analysis of strain localization in...
Asynchronous phase shifted electromagnetic energy harvester
Energy harvester Electromagnetic transducer Asynchronous vibration Resonance
2015/6/30
A vibration-based energy harvester is built upon the idea of transforming mechanical vibration of an inertial frame into electrical power. When the excitation frequency matches the natural frequency o...
Power Evaluation for Flutter-based Electromagnetic Energy Harvester using CFD Simulations
Flutter CFD simulation aerodynamic instability energy harvesting electromagnetic
2015/6/30
Structural instability caused by self exciting aerodynamic forces (flutter) can be used as an effective input source for small scale energy harvesters. The self exciting aerodynamic force exerted on a...