A5101968622- Lattice Boltzmann Simulation Studies
- Advanced Data Storage Technologies
- Advanced Numerical Methods in Computational Mathematics
- Additive Manufacturing Materials and Processes
- High-Temperature Coating Behaviors
- Metal and Thin Film Mechanics
- Parallel Computing and Optimization Techniques
- High Entropy Alloys Studies
- Higher Education and Teaching Methods
- Meteorological Phenomena and Simulations
- Service-Oriented Architecture and Web Services
- Software System Performance and Reliability
- Lubricants and Their Additives
- Computational Fluid Dynamics and Aerodynamics
- Cloud Computing and Resource Management
- Advanced Mathematical Physics Problems
- Power Systems Fault Detection
- Blind Source Separation Techniques
- Cognitive Radio Networks and Spectrum Sensing
- Quantum Mechanics and Non-Hermitian Physics
- earthquake and tectonic studies
- Data Visualization and Analytics
- Vacuum and Plasma Arcs
- Innovative Educational Techniques
- Titanium Alloys Microstructure and Properties
National University of Defense Technology
2015-2022
Westinghouse Electric (United States)
2019-2020
Taiyuan University of Technology
2016-2018
Jilin University
2005-2014
Jilin Province Science and Technology Department
2005-2014
Institute of Software
2012
Shanghai Normal University
2011
Ti6Al4V alloy is a promising candidate for petroleum tube. However, low surface hardness, high/unstable friction coefficient, severe adhesive wear and susceptibility to galling are harmful the direct application of in oil/gas well.
Surface texturing-plasma nitriding duplex treatment was conducted on AISI 316 stainless steel to improve its tribological performance. Tribological behaviors of ground substrates, plasma-nitrided (PN-316), surface-textured (ST-316), and duplex-treated (DT-316) in air under grease lubrication were investigated using a pin-on-disc rotary tribometer against counterparts high carbon chromium bearing GCr15 silicon nitride Si₃N₄ balls. The variations friction coefficient, mass loss, worn trace...
Summary The lattice Boltzmann method (LBM) is a widely used computational fluid dynamics for flow problems with complex geometries and various boundary conditions. Large‐scale LBM simulations increasing resolution extending temporal range require massive high‐performance computing (HPC) resources, thus motivating us to port it onto modern many‐core heterogeneous supercomputers like Tianhe‐2. Although accelerators such as graphics processing unit Intel MIC have dramatic advantage of...
With the rapid increase of wireless service, applying heterogeneous networks is considered as a promising technique to resource utilization rate. However, it difficult achieve rational spectrum allocation when macro-cellular users and femtocellular exist in network which will introduces serious cross-interference inter-interference. To solve this problem, modified swap matching algorithm based on stable theory proposed allocate resource. In algorithm, femtocellualr continuously exchange...
In high-performance and parallel computing, an important application class is particle simulation. Due to massive migration among distributed simulation workers across iterations, achieving balanced runtime work distribution vital for accelerating large-scale realistic simulations. This paper proposes a novel approach enable dynamic load balance numerical simulations, specifically targeting the latest coupled DSMC/PI C method. Unlike prior work, our adopts dual, nested unstructured grid...
With the increase of software system complexity, traditional measurements can not meet requirements, for reason that developers need control quality effectively and guarantee normal operation system. Hence how to measure complexity large-scale has been a challenge problem. In order solve this problem, have obtain good method first. Only through work, structure could be controlled optimized. Note complex network theory offered new theoretical understanding perspective kind work discusses...
Cognitive radio (CR) is regarded as a key technology to solve the scarcity of spectrum resources and improve utilization. Spectrum sensing one basic components CR technology. Energy sensing, matched filtering cyclostationary are three classical methods for in networks, but all them still have some defects. In this paper, phototropism biology introduced "light source" model established new researched based on phototropism. After comparing commonness difference between plant growth process,...
This paper presents a parallel mesh deformation solver using radial basis function (RBF) interpolation. The computes the displacement of each internal point independently without topological relations, and is further accelerated by an incremental approach based on data reduction algorithm. makes full use matrix solution previous step during greedy selection procedure, gives better initial current RBF system equations. To enhance robustness efficiency in parallel, for nonpredefined boundary...
The transport characteristics of the unsteady flow field in rarefied plasma plumes is crucial for a pulsed vacuum arc which particle distribution varies from 1016 to 1022 m−3. direct simulation Monte Carlo (DSMC) method and particle-in-cell (PIC) are generally combined study this kind field. DSMC simulates motion neutral particles, while PIC charged ions. A hybrid DSMC/PIC algorithm investigated here determine axisymmetric plume expansion. Numerical simulations found be consistent with...
Modern heterogeneous high-end computing systems featuring many-core co-processors/accelerators pose tough challenges to parallelize and optimize real-world scientific codes. In this paper, we demonstrate highly scalable 3D Lattice Boltzmann multiphase flow simulations on the Tianhe-2 su-percomputer using MPI+OpenMP+SIMD. We highlight use of OpenMP4.5 accelerator programming model collaborate CPUs Intel Many Integrated Cores (MIC) co-processors, present a range optimizations exploit...