A5011590143- Fluid Dynamics and Turbulent Flows
- Fluid Dynamics and Vibration Analysis
- Wind and Air Flow Studies
- Particle Dynamics in Fluid Flows
- Granular flow and fluidized beds
- Aeolian processes and effects
- Hydrology and Sediment Transport Processes
- Lattice Boltzmann Simulation Studies
- Heat Transfer Mechanisms
- Aerodynamics and Fluid Dynamics Research
- Combustion and flame dynamics
- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Soil erosion and sediment transport
- Electrochemical Analysis and Applications
- Cyclone Separators and Fluid Dynamics
- Aerosol Filtration and Electrostatic Precipitation
- Advanced Combustion Engine Technologies
- Digital Filter Design and Implementation
- Cavitation Phenomena in Pumps
- Chalcogenide Semiconductor Thin Films
- Hydraulic flow and structures
- Grouting, Rheology, and Soil Mechanics
- Aerodynamics and Acoustics in Jet Flows
- Wind Energy Research and Development
Jiangsu University of Technology
2015-2024
Yamagata University
2011-2022
The University of Texas at Dallas
2021-2022
Zhejiang Water Conservancy and Hydropower Survey and Design Institute
2021
Fisheries Administration
2014
Tsinghua University
2012-2013
TED University
2013
North China University of Science and Technology
2013
Harbin University of Science and Technology
2012
Harbin University
2007
To address the challenges of limited labeled data and insufficient global feature extraction in flow field prediction, this paper proposes a modeling approach that combines self-supervised learning Graph Transformer. The module leverages reconstruction tasks contrastive to fully exploit latent information unlabeled data, thereby enhancing joint capability for local features. Transformer incorporates self-attention mechanism, enabling effective long-range dependencies multiscale features...
Focusing on the challenges of vehicle detection in foggy weather, especially algorithm low accuracy caused by small and incomplete targets adverse weather conditions, a based improved lightweight YOLOv8 was proposed. Firstly, dataset processed through combination data transformation, Dehaze Formers dark channel preprocessing. Secondly, main body YOLOv8, C2f component replaced with dynamic convolution C2f- DCN, enhancing its adaptability to geometric changes image. To further improve...
In this study, tomographic particle image velocimetry (PIV) was used to measure three-dimensional (3D) flow structures behind a fixed-bed barchan dune model at Reynolds number of 2528 in circulation water tunnel. The topological evolution the 3D instantaneous vortex and their dynamic characteristics wake were analyzed. arch-shaped “chains” shedding from typical quasi-streamwise induced by development an internal boundary layer found be located both before after reattachment region, which...
In this study, multi-scale vortical structures and vortex dynamics around a fixed-bed barchan dune have been experimentally investigated based on the particle image velocimetry technique, wavelet transform, finite-time Lyapunov exponent method. It was found that dynamic characteristics of wake are predominated by large- intermediate-scale coherent structures. Quadrant analysis Reynolds-stress distribution for corresponding components revealed ejection sweep events main contributors to whole...
Different from the reaction turbines, hydraulic performance of Pelton turbine is dynamic due to unsteady free surface flow in rotating buckets time and space. This paper aims present results investigations conducted on a buckets. The numerical simulations were performed with CFX code by using Realizable k-ε turbulence model coupling two-phase volume fluid method. patterns torque varying bucket analysed. predicted relative at five operating conditions was compared field test results. study...
The internal flow of a Pelton turbine is quite complex. It difficult to analyse the unsteady free water sheet in rotating bucket owing lack sound theory. Affected by manufacturing technique and silt abrasion during operation, surface roughness may be too great, thereby influence unit performance. To investigate effect on performance, this paper presents numerical simulation interaction between jet turbine. three-dimensional simulations were performed with CFX code using SST turbulence model...
Hydrophobic surfaces exhibit unique surface effects and hold broad potential across numerous domains, including anti-icing, condensation, self-cleaning. Conventionally, droplets on hydrophobic have been conceptualized as spherical segments to predict contact angles. However, a droplet deposited tends be flattened at the bottom due gravity, leading discrepancy between experimental observation prediction derived from Cassie–Baxter equation. Here, we propose an approximation that divides...
The three-dimensional orthogonal wavelet multi-resolution technique was applied to analyze flow structures of various scales around an externally mounted vehicle mirror. Firstly, the mirror wake numerically analyzed at a Reynolds number 10 5 by using large-eddy simulation (LES). Then instantaneous velocity and vorticity were decomposed into large-, intermediate- relatively small-scale components technique. It found that large-scale vertical vortex dominates makes main contribution...
Purpose This paper aims to investigate the flow characteristics of lubricating grease in extremely cold weather which it is difficult convey due a huge pressure drop. Design/methodology/approach The rheological behavior at various temperatures studied by rotary rheometer determine constitutive equation grease. Based on Herschel–Bulkley (H–B) model, pattern then simulated computational fluid dynamics and compared with test results. Findings yield stress increased dramatically when shear rate...