A5100655824- Drilling and Well Engineering
- Reservoir Engineering and Simulation Methods
- Enhanced Oil Recovery Techniques
- Oil and Gas Production Techniques
- Hydraulic Fracturing and Reservoir Analysis
- Orbital Angular Momentum in Optics
- Fluid Dynamics and Mixing
- Digital Holography and Microscopy
- Rock Mechanics and Modeling
- Microfluidic and Bio-sensing Technologies
- Petroleum Processing and Analysis
- Near-Field Optical Microscopy
- Quantum optics and atomic interactions
- Aerodynamics and Fluid Dynamics Research
- Hydrocarbon exploration and reservoir analysis
- Sensor Technology and Measurement Systems
- Control Systems and Identification
- VLSI and FPGA Design Techniques
- Autonomous Vehicle Technology and Safety
- Evacuation and Crowd Dynamics
- Vehicle Dynamics and Control Systems
- Fire effects on ecosystems
- Smart Grid and Power Systems
- Fluid Dynamics and Turbulent Flows
- High-Velocity Impact and Material Behavior
Central University of Finance and Economics
2025
China Southern Power Grid (China)
2024-2025
Southwest Petroleum University
2008-2023
Dalian University of Technology
2021
University of Science and Technology of China
2020
Space Engineering University
2018-2020
Research Institute of Petroleum Exploration and Development
2020
Chongqing University
2020
Northwestern Polytechnical University
2019
Sinopec (China)
2019
Abstract To improve the fuel economy of commercial vehicles, this paper designs two types vehicle tailfin shapes from perspective reducing wind resistance at rear vehicle, aiming to reduce influence vortex on driving performance. Based aerodynamic principle, STAR-CCM+ simulation tool was utilized simulate no-tail model, three-surface tail and four-surface model for cases vehicles with flat compartments concave compartments, study effect fins reduction coefficient vehicles. The results show...
ABSTRACT Facing regulatory pressure while balancing the demand for market guidance, analysts must weigh risk of noncompliance to fulfill stakeholders' interests. Literature suggests that strategically adjust presentation information in their research reports meet competing demands. This study analyzes a sample 76,922 Chinese analysts' from 2018 2021 and examines how 2020 Standards Norms China influenced earnings forecast revisions textual tones. The findings exhibit significant reduction...
We numerically investigate the Coriolis force effect on suppression of an explosive burst, triggered by neo-classical tearing mode, in reversed magnetic shear configuration tokamak plasmas, using a reduced magnetohydrodynamic model, including bootstrap current. Previous works have shown that applying differential poloidal rotation, with rotation located near outer rational surface, is effective way to suppress burst. In comparison cases where there no force, amplitude required effectively...
We investigate a method for the generation and measurement of high-order optical vortices (OVs) by using cross phase (CP), which is applied to implement interconversion between Laguerre-Gauss (LG) beams Hermite-Gaussian in far-field. Experimentally, we generate LG beams, are kind typical OVs, with 20 radial nodes, measure OVs topological charges up 200 via CP. On this basis, discuss relationship intensity distributions waist radius initial light beams. This work provides an alternative...
Open-source EDA shows promising potential in unleashing innovation and lowering the cost of chip design. This paper presents an open-source project, iEDA, aiming for building a basic infrastructure technology evolution closing industrial-academic gap area. iEDA now covers whole flow physical design (including Floorplan, Placement, CTS, Routing, Timing Optimization etc.), part analysis tools (Static Analysis Power Analysis). To demonstrate effectiveness we implement tape out three chips...
An abnormal phenomenon may occur during gas-well testing: the wellhead pressure initially rises and then drops when shutting-in a well; opening well. To determine why how this occurs, transient nonisothermal wellbore flow model for testing is developed. Governing equations are based on depth- time-dependent mass, momentum equations, gas state equation. Temperature predicted using unsteady-state heat transfer of Hasan. Boundary conditions include restriction formation inflow throttling to...
The Minimum Phase (MP) properties of linear control systems can be reflected by its zero stability. stability zeros affects the system performance. When a continuous-time is discretized to discrete-time system, discretization process may render models have nonminimum phase. This paper analyses MP and deduces new stable condition when Forward Triangle Sample Hold (FTSH) for sufficiently small sampling periods. Finally, two numerical examples verified our results.
The application effect of the foam deliquification technology in horizontal wells is poor because foaming agent fails to reach target location. In view this, adaptability capillary Western Sichuan Gas Field Basin was analyzed from aspects gas flow rate, liquid rate and casing program wells, design injection depth selection size, tool string parameters (the maximum length minimum counterweight) (foaming type selection, ground concentration rate) were optimized. Then, a standardized operation...
To investigate smoke propagation behavior and premonitory characteristics before reaching stability in subway carriage fires inclined tunnels, full-scale fire experiments of trains tunnels were conducted using FDS simulation software. It analyzes how factors like tunnel slope, Heat Release Rates (HRRs), blocking affect temperature distribution. Employing the critical slowing down theory, study examines mass flow rates time series variations to identify signals system stability. Results show...
The grid integration of large-scale photovoltaic and other distributed energy sources is an effective solution for addressing power supply shortages environmental pollution. However, the widespread adoption photovoltaics presents various technological management challenges. To fulfill demands ensure safe operations, exchange information between different terminals continuously escalating. Use diverse communication standards creates problem “information islands” among terminals. Hence, a...
The phenomenon of synchronization, where entities exhibit stable oscillations with aligned frequencies and phases, has been detected in diverse areas natural science. It plays a crucial role achieving frequency locking multiple applications such as microwave communication signal processing. study synchronization quantum systems gained significant interest, particularly developing robust methods for synchronizing distant objects. Here, we demonstrate that between the boundary sites...
In order to study the method of optical vortex generation by cascaded spiral phase plates, theoretical analysis, simulations and experimental demonstration this are presented. Firstly, theory plates is analyzed. Secondly, an setup built, then two groups proposed with single plate set as a control group. On basis, correlation model up, relative intensity beam radius propagation distance simulated. Simulated graphs plotted related rate change calculated, initially proving advantages plates....
Abstract The operation of pipelines has been affected by the corrosion caused water deposited in some low sections liquid products and natural gas pipeline. Flushing out flowing diesel become a popular method. This research focused on local water-diesel flow system with Uos, which pattern, velocity shear stress were analyzed through 2D simulation conducted FLUENT software based grid independent strategy; meanwhile simulations verified comparison published data. Under from laminar flow,...
This paper presents a simple two-phase flow model for liquid-cut gas wells, which considers phase slippage and can be applied to various patterns. The is developed from 312 measured pressure losses of wells in China, covering wide range patterns: annular flow, churn slug flow. Unlike most available methods, this new introduces derivation factor, ψ , modify the void fraction, not only but also unifies slip with homogenous model. Parameter, obtained test data using regression analyses method....