A5100634910- Thermal properties of materials
- Thermal Radiation and Cooling Technologies
- Thermoelastic and Magnetoelastic Phenomena
- Heat Transfer and Optimization
- Gas Dynamics and Kinetic Theory
- Numerical methods in inverse problems
- Advanced Thermoelectric Materials and Devices
- Lattice Boltzmann Simulation Studies
- Thermography and Photoacoustic Techniques
- Nanopore and Nanochannel Transport Studies
- Advancements in Semiconductor Devices and Circuit Design
- Radiative Heat Transfer Studies
- Advanced Thermodynamics and Statistical Mechanics
- Nanofluid Flow and Heat Transfer
- Model Reduction and Neural Networks
- Fuel Cells and Related Materials
- Graphene research and applications
- Aerosol Filtration and Electrostatic Precipitation
- Material Dynamics and Properties
- Carbon Nanotubes in Composites
- Advanced Mathematical Modeling in Engineering
- Quantum, superfluid, helium dynamics
- Electrochemical sensors and biosensors
- Numerical methods in engineering
- Generative Adversarial Networks and Image Synthesis
Hangzhou Dianzi University
2023-2025
Guiyang Medical University
2024
Huazhong University of Science and Technology
2017-2022
Southern University of Science and Technology
2022
Xi'an University of Technology
2012
Hydrodynamic second sound can be generated by heat pulses when the phonon-phonon interaction is dominantly momentum conserving, and propagation of temperature field becomes wavelike rather than diffusive. While Boltzmann transport equation (BTE) has been widely applied to study phonon dynamics thermal at nanoscale, modeling hydrodynamic regime remains challenging. The used relaxation-time approximation treats all interactions as resistive without considering conservation, resulting in...
Abstract We study hydrodynamic phonon heat transport in two-dimensional (2D) materials. Starting from the Peierls-Boltzmann equation with Callaway model approximation, we derive a 2D Guyer-Krumhansl-like describing transport, taking into account quadratic dispersion of flexural phonons. In addition to Poiseuille flow, second sound propagation, predicts current vortices and negative non-local thermal conductance materials, which are common classical fluids but have not yet been considered...
In this paper, a multiscale boundary condition for the discrete unified gas kinetic scheme (DUGKS) is developed flows in all flow regimes. Based on Maxwell (DMBC), study addresses limitations of original DMBC used DUGKS. Specifically, it found that produces spurious velocity slip and temperature jump, which are proportional to mesh size momentum accommodation coefficient. The proposed implemented by ensuring reflected distribution function excludes collision effects. Theoretical analyses...
Many phonon hydrodynamics phenomena, including heat vortices, wave and parabolic distributions of flux, which appear due to sufficient normal process, can also when there is insufficient process. In other words, a smoking gun phenomena at the macroscopic level still lacking. To find it, transient cooling phenomenon in two-dimensional materials studied based on Boltzmann transport equation. A heating pulsed Gaussian laser beam added center disk it continues system for while under environment...
An implicit kinetic scheme is proposed to solve the stationary phonon Boltzmann transport equation (BTE) for multiscale heat transfer problem. Compared conventional discrete ordinate method, present method employs a macroscopic accelerate convergence in diffusive regime. The can be taken as moment BTE. flux evaluated from nonequilibrium distribution function BTE, while equilibrium state BTE determined by equation. These two processes exchange information different scales, such that...
Abstract In this work, a discrete unified gas kinetic scheme (DUGKS) is developed for radiative transfer in anisotropic scattering media. The method an extension of previous one isotropic radiation problems [1]. present finite-volume discretization the gray equation, where phase function approximated by Legendre polynomial expansion. With coupling free transport and processes reconstruction flux at cell interfaces, DUGKS has nice preserving properties such that size not limited photon mean...
The propagation of heat in the transient thermal grating geometry is studied based on phonon Boltzmann transport equation (BTE) different regimes. Our analytical and numerical results show that dispersion relation temperature govern emergence waves. For frequency-independent BTE, a wave manifests both ballistic hydrodynamic frequency-dependent waves are present regime but may be absent regime. In context real materials, we predict suspended graphene (ballistic regimes) silicon regime) at...
The development of nanotherapy targeting mitochondria to alleviate oxidative stress is a critical therapeutic strategy for vascular calcification (VC) in diabetes. In this study, we engineered mitochondria-targeted nanodrugs (T4O@TPP/PEG–PLGA) utilizing terpinen-4-ol (T4O) as natural antioxidant and mitochondrial protector, PEG–PLGA the nanocarrier, triphenylphosphine (TPP) ligand. vitro assessments demonstrated enhanced cellular uptake T4O@TPP/PEG–PLGA, with effective targeting. This...
Thermal rectification which is a diode-like behavior of heat flux has been studied over long time. However, universal and systematic physical description still lacking. In this letter, perturbation theory thermal developed, provides an analytical formula the ratio. It reveals linear relationship between ratio temperature difference. Furthermore, size-dependence relies on specific form conductivity. addition, several experimental numerical observations in previous literatures are well...
Electrons are the carriers of heat and electricity in materials exhibit abundant transport phenomena such as ballistic, diffusive, hydrodynamic behaviors systems with different sizes. The electron Boltzmann equation (eBTE) is a reliable model for describing transport, but it challenging problem to efficiently obtain numerical solutions eBTE within one unified scheme involving hydrodynamics, and/or diffusive regimes. In this work, discrete gas kinetic (DUGKS) finite-volume framework developed...