A5101401312- Combustion and flame dynamics
- Advanced Combustion Engine Technologies
- Combustion and Detonation Processes
- Soil Mechanics and Vehicle Dynamics
- Rocket and propulsion systems research
- Fire dynamics and safety research
- Rice Cultivation and Yield Improvement
- Iron oxide chemistry and applications
- Numerical methods in engineering
- Radiomics and Machine Learning in Medical Imaging
- Remote Sensing and LiDAR Applications
- Pigment Synthesis and Properties
- Nanoporous metals and alloys
- Advanced Numerical Methods in Computational Mathematics
- Surface Treatment and Residual Stress
- Fatigue and fracture mechanics
- Heat transfer and supercritical fluids
- Machine Learning in Healthcare
- Plant responses to water stress
- Epoxy Resin Curing Processes
- Polymer crystallization and properties
- Fiber-reinforced polymer composites
- Agricultural Engineering and Mechanization
- Additive Manufacturing Materials and Processes
- Remote Sensing in Agriculture
University of Leeds
2021-2024
Hainan University
2021-2023
East China University of Science and Technology
2023
Fujian Agriculture and Forestry University
2020
Liaoning Shihua University
2001-2009
In this study, the influences of pressure, temperature and equivalence ratio on onset cellular instabilities in premixed hydrogen/air laminar flames were studied using a constant volume fan-stirred combustion vessel. The instability is marked by critical stretch rate, at which flame speed rapidly deviates from its prior response to stretch. It noted that Peclet number, Pecl, increases with increasing both temperature, indicating more stable flame. Whilst, Pecl decreases initial pressure due...
Laminar flame characteristics of ethane/hydrogen/air (with XH2 = 25 %, 50 75 % and 100 by volume) within an equivalence ratio from 0.7 to 1.3 were determined in a spherical constant volume combustion vessel at elevated pressure up 0.5 MPa, temperature 360 K. Key such laminar burning velocity, Markstein length/number, thickness, effective Lewis number, thermal expansion coefficient critical conditions the onset cellular instability including radius Peclet either measured or calculated. These...
Coal-based naphtha features a low Octane number and is promising fuel as potential energy supplements for advanced compression ignition engines where the auto-ignition dominates combustion process. However, its characteristics including delay times (IDTs), knocking propensity have not been well studied yet. In present work, Leeds optical Rapid Compression Machine (RCM) equipped with simultaneous pressure acquisition high-speed photography was implemented to study IDTs knock properties of...
Particle image velocimetry (PIV) was employed to investigate the disturbance of unstable laminar hydrogen-air outwardly propagating spherical flames in a explosion vessel. Both flame speed and gas velocities exhibit acceleration due wrinkled surface. This occurs throughout cycle strong weak phases, which is driven by division expansion cells across front. The exponent, α, velocity ahead αg, are nearly identical. suggests close interrelation between self-acceleration (Sn) front (ug). Stronger...
The self-acceleration and global pulsation of spherically expanding laminar hydrogen-air flames were studied in a spherical explosion vessel, over wide range equivalence ratios (0.4–2.0), initial temperatures (300–400 K), pressures (0.1–0.7 MPa). Comprehensive quantitative data on the propagation unstable obtained. results show that self-similarity appears after onset instability, previous assertion acceleration exponent α = 1.5 is not valid for flames. derived values such vary from 1.125...
Coal-based naphtha is a promising alternative fuel as it fits the standards of energy replacement and technologically mature, safe, dependable. However, its laminar combustion characteristics have not been well studied. The burning velocities Markstein lengths kind coal-based (C6.97142H15.88244) over range initial conditions were measured by Particle Imaging Velocimetry (PIV) in spherical explosions. In addition, 3-component surrogate model (62.4 mol% n-C6H14, 32.5 i-C8H18 5.1 i-C7H16) based...
One of the most essential inherent characteristics a combustible mixture is laminar burning velocity. Because its relevance, many methods for measuring flame velocity have been devised. advanced procedure was used to derive in constant volume vessel blends iso-octane and n-heptane/air mixtures this study: particle imaging velocimetry. Based on precise flow field with vectors, velocimetry (PIV) provides highly accurate velocities. The results PIV method were compared Schlieren data...
The combustion characteristics of laminar biogas premixed and diffusion flames in the presence upward decreasing magnetic fields have been investigated this study. mechanism magnet–flame interaction literature, which change behaviors due to paramagnetic diamagnetic properties constituent gases, is examined results are as follows. field has no noticeable effect on low oxygen concentration mixed gas at injection relatively high flow momentum. However, nature property ambient air, distributions...
Abstract A triangle arrayed tri-screw extruder (TATSE) is a new-style that has special structure different from twin screw extruder. Three-dimensional and non-isothermal flow in TATSE was simulated by using the finite element method. The temperature distribution, power consumption productivity ratio at various rotational speeds, flight number, pressure difference rate were studied especially. Comparison analysis of between (TSE), parallel arranged (PATSE) carried out. results show mixing...
In recent advancements, multimodal large language models (MLLMs) have been fine-tuned on specific medical image datasets to address visual question answering (Med-VQA) tasks. However, this common approach of task-specific fine-tuning is costly and necessitates separate for each downstream task, limiting the exploration zero-shot capabilities. paper, we introduce MC-CoT, a modular cross-modal collaboration Chain-of-Thought (CoT) framework designed enhance performance MLLMs in Med-VQA by...
The self-acceleration and global pulsation of spherically expanding laminar hydrogen-air flames were studied in a spherical explosion vessel, over wide range equivalence ratios (0.4-2.0), initial temperatures (300-400 K), pressures (0.1-0.7 MPa). Comprehensive quantitative data on the propagation unstable obtained. results show that self-similarity appears after onset instability, previous assertion acceleration exponent [[EQUATION]] = 1.5 is not valid for flames. derived values such vary...
Introduction Rubber trees are an important cash crop in Hainan Province; thus, monitoring sample plots of these provides data for determining growth conditions. However, existing technology and rubber forest plot analysis methods relatively simple present widespread issues, such as limited equipment, transportation difficulties, poor three-dimensional visualization effects complex environments. These limitations have complicated the development monitoring. Method This study developed a...