A5101991462- Fluid Dynamics and Turbulent Flows
- Biomimetic flight and propulsion mechanisms
- Turbomachinery Performance and Optimization
- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics and Vibration Analysis
- Lattice Boltzmann Simulation Studies
- Aerodynamics and Fluid Dynamics Research
- Refrigeration and Air Conditioning Technologies
- Combustion and Detonation Processes
- Fire dynamics and safety research
- Water Quality Monitoring and Analysis
- Cyclone Separators and Fluid Dynamics
- Aerospace and Aviation Technology
- Advanced oxidation water treatment
- Combustion and flame dynamics
- Fluid Dynamics and Heat Transfer
- Fluid Dynamics Simulations and Interactions
- Aeroelasticity and Vibration Control
- Chemical Looping and Thermochemical Processes
- Plasma and Flow Control in Aerodynamics
- Underground infrastructure and sustainability
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Environmental Quality and Pollution
- Risk and Safety Analysis
- Layered Double Hydroxides Synthesis and Applications
Neusoft (China)
2024
Beijing Institute of Technology
2011-2024
Chinese Academy of Sciences
2005-2024
University of Chinese Academy of Sciences
2024
Nanjing University of Aeronautics and Astronautics
2016-2024
Wuhan University of Technology
2020
Zhejiang Gongshang University
2018
Shenyang Jianzhu University
2011-2013
Zhejiang University of Technology
2012
Xiaomi (China)
2011
In this study, an improved SPH (smoothed particle hydrodynamics) method coupling the κ-ε turbulence model and wall function is proposed to simulate wall-bounded turbulent flows at medium high Reynolds numbers. The second-order partial derivative term of composite containing viscosity coefficient decomposed into sum two terms, which helps avoid numerical errors difficulties in dealing with boundary conditions nested approximation first-order derivatives. Particle shifting technique, δ-SPH...
The finite difference method (FDM) is a widely used grid-based with high computational accuracy and efficiency. Smoothed particle hydrodynamics (SPH) meshless method, which can easily deal the fluid flow free surface moving boundary conditions. Considering different advantages of two methods, hybrid approach developed by coupling FDM SPH. To improve efficiency, compute unified device architecture to develop graphics processing unit parallel computing model for SPH-FDM method. At low Reynolds...
The special aerodynamic characteristics of insects have attracted the interest biologists and engineers. In this paper, modeling methods for flapping flight are systematically reviewed in detail, especially those developed past ten years. differences among kinds methods, development each type their applications different conditions discussed detail. First, steady-state several representative models presented. applicability simple model decreases when it is applied to predict loads on small...
In this paper, a method for simulating the instability transient process of axial compression system based on body-force model is developed, and corresponding simulation program developed. Simulations were carried out high-speed four-stage compressor compared with experimental data. At 50% design rotational speed, type was rotating stall, simulated stall cell propagation speed very close to each other. 70% surge. A “surge loop” simulated, surge period percentage time spent in phase...
The current paper presents a high-speed switching valve for the piston motion control of single-piston hydraulic free-piston engine. A performance prediction model is developed and test method spool movement without using displacement sensors provided. agreement between experiments simulations indicates that can predict performance. response rapid enough flow capacity not reduced by fast requirement. time step signal pilot important reducing lag. smaller gap helpful in improving response.
Recently, numerous studies have been conducted to clarify the effects of increases in pitching and plunging amplitudes flapping wings on thrust lift generation. In present study, continuously increasing aerodynamic performances a two-dimensional (2D) wing are investigated computationally. Continuously significant rate leading-edge vortex (LEV) development time LEV separation; as result, performance is influenced. Lift gradually improved with amplitudes; however, higher induce production drag...
Unmanned aerial vehicles (UAVs) with variable-sweep morphing have good advantages in unsteady aerodynamic characteristics whereas most researches focused on their steady-state benefits. In order to explore the relationship between these two aspects, a model of unmanned vehicle used do numerical simulations process is designed. To ensure accuracy results, grid-independent verification, time step selection and verification dynamic mesh technique been carried out. As there are so many factors...
Flow regime is one of the fundamental parameters with important engineering significance in two-phase flow systems, and has always been an aspect research. In this paper, support vector machine (SVM) method statistics theories was adopted to analyze measured data electrical resistance tomography (ERT) system so that identification gas/liquid horizontal pipe carried out. The analysis result experiment indicates can obtain inspiring result.
Complicated interaction of a flame front with turbulent flow induced by venting is studied during combustion the stoichiometric propane/air mixture in relatively large vented cylindrical vessel. Flame position, its shape, and pressure were measured as function time vent parameters. The experimental data used to verify numerical simulation process. proposed model satisfactorily simulates main features closed vessel such configuration, temperature fields, variation pattern. Simulated velocity...
A periodic interaction model was proposed for the copper-iron layered double hydroxides, Cu3Fe-LDHs-yH2O (y=0-2). Based on density functional theory, geometry of optimized using CASTEP program. The distribution NO - and H2O in interlayer supermolecular between host guest investigated by analyzing geometric parameters, hydrogen-bonding, charge populations stepwise hydration energy. Results indicated that when were inserted into layers Cu3Fe-LDHs, there a strong supramolecular layer guest,...
Recently, numerous studies have been conducted to clarify the effects of corrugation wing on aerodynamic performances. The patterns and inclination angles were investigated using computational fluid dynamic method in gliding hovering flight at Reynolds numbers order 10 4 . instantaneous forces vorticity field around models provided research underlying mechanisms corrugated models. findings can be concluded as follows: (1) different performance. effect noncamber is decrease lift increase drag...
By the static experiment, we studied electrochemical oxidation process of simulated hydroquinone wastewater (concentration for 300mg•L-1) in three-dimensional cell. Experimental inspected how various factors packing quality ratio, electrolysis voltage, supporting electrolyte concentration, and initial pH value influence effect removal CODCr. The results experiment clearly indicated with increase voltage applied rate CODCr increased first then decreased, finally again. In weak alkali...
Flammability limits for flames propagating in a rich propane/air mixture under gravity conditions appeared to be 6.3% C3H8 downward propagation and 9.2% upward propagation. Different might explained by the action of preferential diffusion deficient reactant (Le < 1) on limit flames, which are different states instability. In one previous studies, flammability microgtravity were found between obtained standard tube normal conditions. It was those experiments that there two microgravity...
Abstract In order to realize the stator’s internal flow field measurement of multi-stage axial compressor, many different lengths L-type five-hole probes and one four-hole probe have been designed. The detailed 3D (three-dimensional) fields in stator blade passage original modified large scale compressors measured with traversed by a traverse mechanism. objective study is assess method adopting multi-hole pneumatic achieve vane passage. Results clearly demonstrate characteristics...