A5005190460- Gas Dynamics and Kinetic Theory
- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics and Turbulent Flows
- Plasma and Flow Control in Aerodynamics
- Network Security and Intrusion Detection
- Machine Learning and Data Classification
- Heat transfer and supercritical fluids
- Nuclear Engineering Thermal-Hydraulics
- Adaptive Control of Nonlinear Systems
- Advanced Control Systems Design
- Elasticity and Material Modeling
- Stability and Control of Uncertain Systems
- Nuclear reactor physics and engineering
- Machine Learning and Algorithms
- Composite Material Mechanics
- Advanced Malware Detection Techniques
- Advanced Photonic Communication Systems
- Anomaly Detection Techniques and Applications
Zhejiang University
2022-2025
Hunan Vocational Institute of Technology
2018
The complex interplay between high-temperature and rarefaction effects poses ongoing challenges to model hypersonic nonequilibrium flows, affecting the accurate prediction of aerodynamic aerothermal loads for vehicles. To address this issue, a multispecies Nonlinear Coupled Constitutive Relations (NCCR) is first derived from modified Boltzmann equations with vibrational mode. proposed NCCR incorporates thermochemical suite comprising chemical kinetic packages, Park's two-temperature model,...
To predict aeroheating performance of hypersonic vehicles accurately in thermochemical nonequilibrium flows accompanied by rarefaction effect, a Nonlinear Coupled Constitutive Relations (NCCR) model coupled with Gupta's chemical models and Park's two-temperature is firstly proposed this paper. Three typical cases are intensively investigated for further validation, including over two-dimensional cylinder, RAM-C II flight vehicle type HTV-2 vehicle. The results predicted NCCR solution, such...
The present study reports the numerical analyses of lateral jet interaction around a Terminal High Altitude Area Defense-type (THAAD-type) model in hypersonic rarefied flows, with real gas effect incorporated. computation approach employed is recently developed thermochemical non-equilibrium nonlinear coupled constitutive relations (NCCR) model. Regarding simulation conditions, flight velocity and height are set to 20 Ma 80 km, respectively. To disclose flow mechanism interaction, complex...
A newly heuristic form of second-order slip/jump boundary conditions (BCs) for the Navier–Stokes–Fourier (NSF) equations is proposed from viewpoint generalized hydrodynamic (GHE) to extend capability NSF moderately rarefied gas flows. The nonlinear Rayleigh–Onsager dissipation function appearing in GHE, which contains useful information about nonequilibrium flow fields interest, introduced into BCs named simplified (SGH) as a correction parameter. Compared with classical Maxwell/Smoluchowski...
The accurate prediction of the aerodynamic and aerothermodynamic data for a reentry vehicle at high altitudes is often an important guidance design thermal protection system. During process, hypersonic vehicles will intensively experience complicated physical chemical phenomena, primarily including real gas effects rarefied effects. In this study, model nonlinear coupled constitutive relations (NCCR) introduced numerical simulations flows with thermochemical nonequilibrium rarefaction...
To achieve objective and accurate recognition of the maturity cigar leaves, industrial cameras were used to capture images leaves at three different levels leaves: immature, mature, overripe. MATLAB was establish AlexNet ResNet_18 classification models. The results showed that both achieved higher accuracy during training process with optimized structure 2 than classical 1. InitialLearnRate MiniBatchSize highest accuracies 0.001 32%, respectively. precision, recall, F1 score after...
In order to improve network intrusion detection rate, a cooperative quantum PSO and LS-SVM model (CQPSO-LSSVM) was proposed in this paper. Network feature subset is encoded into particle positions, accuracy used as the evaluation criteria o f merits, synergistic swarm algorithm are find optimal subset, establish model, KDD CUP 99 dataset simulation test. The results show that, compared with other models, has improved efficiency rate of intrusion.