A5008734260- Combustion and flame dynamics
- Cyclone Separators and Fluid Dynamics
- Fluid Dynamics and Heat Transfer
- Plant Surface Properties and Treatments
- Heat Transfer Mechanisms
- Electrohydrodynamics and Fluid Dynamics
- Turbomachinery Performance and Optimization
- Hydrology and Sediment Transport Processes
- Heat Transfer and Boiling Studies
- Heat and Mass Transfer in Porous Media
- Heat Transfer and Optimization
- Lattice Boltzmann Simulation Studies
- Coal Combustion and Slurry Processing
- Engineering Structural Analysis Methods
- Aerosol Filtration and Electrostatic Precipitation
- Ocean Waves and Remote Sensing
- Fluid Dynamics and Vibration Analysis
- Nanofluid Flow and Heat Transfer
- Computational Geometry and Mesh Generation
- Ranque-Hilsch vortex tube
- Wind and Air Flow Studies
- Coastal and Marine Dynamics
- Brake Systems and Friction Analysis
- Aeolian processes and effects
- Fluid Dynamics and Mixing
University of Science and Technology of China
2023-2025
Chinese Academy of Sciences
2023
National Cheng Kung University
1993-2007
University of Mississippi
2007
Abstract An axial/radial dual-stage swirler with an inner axial inlet and outer radial is proposed its mean flow turbulent characteristics are studied by particle imaging velocimetry (PIV) numerical simulation. Compared a traditional single-stage swirler, the Coanda effect can be weakened inside swirler. By proper orthogonal decomposition (POD) analysis, it found that has higher energy concentration in each order mode exhibits explosive breakup (Mode 1), swinging 2), one precessing vortex...
Abstract To study the coherent structure in a combustion chamber equipped with double-stage swirler, Unsteady Reynolds Averaged Navier-Stokes (URANS) of Realizable k-ε and renormalization Group (RNG) , along Large Eddy Simulation (LES) are employed. The time-averaged results indicate that three turbulence models exhibit certain level consistency experimental data. Analysis instantaneous streamlines Q criterion iso-surface reveal unsteady demonstrates poor predictive capablity. In contrast,...
The investigation of droplet impingement plays a crucial role in understanding the dynamics fuel impact on walls inside engine combustion chambers. To study and heat transfer characteristics two-component mixed droplets impacting upon an inclined stainless steel heated wall, effect wall tilt angle (0°–40°), Weber numbers (We, ranging from 50 to 210), temperatures (Tw, between 25 350 °C) models spreading diameters is conducted. Through quantitative analysis high-speed images captured during...
The characteristics of fully developed turbulent flow in a hybrid domain channel, which consists clear fluid region and porous bed, are examined numerically using model based on the macroscopic Reynolds-averaged Navier–Stokes equations. By adopting classical continuity interface conditions, present treats problem with single approach, simulated results noted to coincide existing experimental data microscopic data. effects porosity ϕ Darcy number Da properties over inside bed further...
In this paper, the isothermal swirling flow in a combustion chamber equipped with double-stage swirler is studied by combination of experiments and numerical simulations at Reynolds number (Re) ranging from 2712 to 43 396. The swirl numbers inside outside entrances are 0.81 0.89, respectively. effect Re on mean field, oscillation evolution characteristics instantaneous vortex structures such as breakdown precessing core (PVC) systematically analyzed. It found that there significant...
Abstract Based on the steady hydrodynamic equations, a multilayer (ML) model has been formulated for simulating turbulent flow in open channels. The is imposed general curvilinear co‐ordinate system with non‐staggered finite volume discretization. quantities are described by layer‐averaged K ‐ε turbulence standard coefficients. Assuming vertical hydrostatic pressure distribution, depth correction scheme, originating Rhie and Chow approach confined flows, incorporated into SIMPLE procedure to...
Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI
Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI
A new combustion chamber equipped with a double-stage counter-rotating swirler is proposed and the flow field characteristics are explored by combining 2D-PIV experiment Reynolds averaged numerical simulation (RANS). Firstly, performance of various turbulence models in predicting evaluated comparing them experimental results. The study concludes that RNG k-ε model exhibits superior velocity distribution, recirculation zone length, vorticity distribution. Hence, it selected to analyze...
It is proposed to use sand drain systems in a channel mud bed accelerate the pollutants release rate of bed, based on fact that hydraulic conductivity horizontal usually larger than vertical. Experiments are conducted model system assess this concept. This filled with various depths and has different arrangements. Ammonium nitrogen (NH4-N) dissolved oxygen (DO) concentrations at water body adj scent surface measured. Experimental results show ammonium concentration increases test time. It’s...