12 citations · 54 across the 21 of their papers we have counts for
21 papers
Monte Carlo Physics-informed Neural Networks for Inverse Multiscale Heat Conduction Problems via the Phonon Boltzmann Transport Equation
Qingyi Lin, Chuang Zhang, Xuhui Meng +1
Inferring thermal fields and thermophysical properties from limited measurements is a fundamental challenge in micro- and nanoscale heat conduction, where the classical Fourier law…
Multiscale discrete Maxwell boundary condition for the discrete unified gas kinetic scheme for all Knudsen number flows
Ziyang Xin, Yue Zhang, Chuang Zhang +1
In this paper, a multiscale boundary condition for the discrete unified gas kinetic scheme (DUGKS) is developed for gas flows in all flow regimes. Based on the discrete Maxwell bou…
Monte Carlo Physics-informed neural networks for multiscale heat conduction via phonon Boltzmann transport equation
Qingyi Lin, Chuang Zhang, Xuhui Meng +1
The phonon Boltzmann transport equation (BTE) is widely used for describing multiscale heat conduction (from nm to m or mm) in solid materials. Developing numerical approaches t…
Discrete unified gas kinetic scheme for the solution of electron Boltzmann transport equation with Callaway approximation
Meng Lian, Chuang Zhang, Zhaoli Guo +1
Electrons are the carriers of heat and electricity in materials, and exhibit abundant transport phenomena such as ballistic, diffusive, and hydrodynamic behaviors in systems with d…
Electron-phonon coupling and non-equilibrium thermal conduction in ultrafast heating systems
Chuang Zhang, Rulei Guo, Meng Lian +1
The electron-phonon coupling in ultrafast heating systems is studied within the framework of Boltzmann transport equation (BTE) with coupled electron and phonon transport. A discre…
Acceleration strategy of source iteration method for the stationary phonon Boltzmann transport equation
Chuang Zhang, Samuel Huberman, Xinliang Song +3
Mesoscopic numerical simulation has become an important tool in thermal management and energy harvesting at the micro/nano scale, where the Fourier's law failed. However, it is not…
Modeling Heat Conduction with Dual-Dissipative Variables: A Mechanism-Data Fusion Method
Leheng Chen, Chuang Zhang, Jin Zhao
Many macroscopic non-Fourier heat conduction models have been developed in the past decades based on Chapman-Enskog, Hermite or other small perturbation expansion methods. These ma…
Modified steady discrete unified gas kinetic scheme for multiscale radiative heat transfer
Xinliang Song, Yue Zhang, Xiafeng Zhou +2
In this work, a steady discrete unified gas kinetic scheme (SDUGKS) is proposed to solve the steady radiative transfer equation (RTE), which is an improvement of the original SDUGK…
On the question of second sound in germanium: A theoretical viewpoint
Samuel Huberman, Chuang Zhang, Jamal Abou Haibeh
We revisit the recent work from Beardo et al. \cite{beardo2021observation} wherein the observation of second sound in germanium is claimed. We review the requirements imposed on th…
Transient hydrodynamic phonon transport in two-dimensional disk geometry
Chuang Zhang, Lei Wu
Transient cooling phenomenon in two-dimensional materials is studied based on the phonon Boltzmann transport equation (BTE). Using a heating laser pulse to heat the two-dimensional…
Non-monotonic heat dissipation phenomenon in close-packed quasi-2D and 3D hotspot system
Chuang Zhang, Lei Wu
Transient heat dissipation in close-packed quasi-2D nanoline and 3D nanocuboid hotspot systems is studied based on phonon Boltzmann transport equation. It is found that, counter-in…
On the emergence of heat waves in the transient thermal grating geometry
Chuang Zhang, Samuel Huberman, Lei Wu
The propagation of heat in the transient thermal grating geometry is studied based on phonon Boltzmann transport equation (BTE) in different phonon transport regimes. Our analytica…
A fast-converging scheme for the Phonon Boltzmann equation with dual relaxation times
Jia Liu, Lei Wu
Callaway's dual relaxation times model, which takes into account the normal and resistive scatterings of phonon, is used to describe the heat conduction in materials like graphene.…
A novel transient heat conduction phenomenon to distinguish the hydrodynamic and (quasi) ballistic phonon transport
Chuang Zhang, Zhaoli Guo
Previous studies have predicted the failure of Fourier's law of thermal conduction due to the existence of wave like propagation of heat with finite propagation speed. This non-Fou…
Heat vortexes of ballistic, diffusive and hydrodynamic phonon transport in two-dimensional materials
Chuang Zhang, Songze Chen, Zhaoli Guo
In this work, the heat vortexes in two-dimensional porous or ribbon structures are investigated based on the phonon Boltzmann transport equation (BTE) under the Callaway model. Fir…
Perturbation theory of thermal rectification
Chuang Zhang, Meng An, Zhaoli Guo +1
Thermal rectification which is a diode-like behavior of heat flux has been studied over a long time. However, a universal and systematic physical description is still lacking. In t…
Radial thermal rectification in the concentric silicon ring from ballistic to diffusive regime
Chuang Zhang, Songze Chen, Zhaoli Guo
The radial thermal rectification in the concentric silicon ring from ballistic to diffusive regime is investigated based on the phonon Boltzmann transport equation. In the ballisti…
Violation of Fourier's law in homogeneous systems
Chuang Zhang, Dengke Ma, Manyu Shang +5
Hotspot is a ubiquitous phenomenon in microdevices/chips. In homogeneous nanoscale graphene disk with a hotspot, a graded thermal conductivity is observed previously even when the…
A fast synthetic iterative scheme for the stationary phonon Boltzmann transport equation
Chuang Zhang, Songze Chen, Zhaoli Guo +1
In this paper, a fast synthetic iterative scheme is developed to accelerate convergence for the implicit DOM based on the stationary phonon BTE. The key innovative point of the pre…
Discrete unified gas kinetic scheme for multiscale heat transfer with arbitrary temperature difference
Chuang Zhang, Zhaoli Guo
In this paper, a finite-volume discrete unified gas kinetic scheme (DUGKS) based on the non-gray phonon transport model is developed for multiscale heat transfer problem with arbit…
An implicit kinetic scheme for multiscale heat transfer problem accounting for phonon dispersion and polarization
Chuang Zhang, Songze Chen, Zhaoli Guo
An efficient implicit kinetic scheme is developed to solve the stationary phonon Boltzmann transport equation (BTE) based on the non-gray model including the phonon dispersion and…