China University of Petroleum, East China

Development and numerical investigation of a claw compressor with novel symmetric multi-claw rotors for PEMFC air supply systems

The claw compressor, characterized by oil-free operation, compact structure, and stable performance, is critical for enhancing the power density and efficiency of proton exchange membrane fuel cell(PEMFC). The rotor geometry significantly influences the thermodynamic performance...

Data-efficient design of DOPO/rare-earth flame-retardant epoxy resins for carbon fiber composites

To address the challenges of data sparsity and model generalization in small-sample material optimization for flame-retardant resin matrices in composites, this study proposes a “parameterization-visualization” dual-driven strategy. This approach establishes an efficient, standar...

How Structural Segmentation Shapes Petroleum‐System Efficiency in a Transform‐Modified Rift: Insights From the Saltpond Basin (Offshore Ghana), Equatorial Atlantic Margin

ABSTRACT Rifts host a substantial proportion of the world's hydrocarbon resources because lithospheric extension commonly generates sustained subsidence, thick sedimentary fills and laterally connected migration systems that enhance petroleum‐system efficiency. In transform‐modif...

Three-dimensional cementing displacement efficiency prediction based on domain-decomposed physics-informed neural network

Efficient displacement of drilling fluid by cement slurry is essential for ensuring cementing quality, and accurate flow-field prediction is crucial for improving displacement efficiency. Although computational fluid dynamics (CFD) is widely used to investigate displacement mecha...

Formation and preservation of high-quality reservoirs in the Sha 4 lower submember (Es4x), lacustrine rift bonan depression, Bohai Bay Basin, China

Abstract The formation of high-quality reservoirs remains a critical challenge in the exploration and development of deeply buried clastic systems, particularly in lacustrine rift basins where reservoir quality evolution is governed by complex depositional, diagenetic, and struct...

Development and Organic‐Matter Enrichment Mechanisms of Organic‐Rich Shales in the Upper Permian Dalong Formation, Western Hubei Trough, South China

ABSTRACT Organic‐rich shales of the Upper Permian Dalong Formation in the Western Hubei Trough represent a potential successor interval for shale‐gas exploration in the Middle–Upper Yangtze region, yet their depositional evolution and organic‐matter enrichment mechanisms remain i...

From vulnerability to adaptation: Institutional, technological, and fiscal moderators of climate risk in renewable energy development

Understanding how climate risk shapes the trajectory of renewable energy transitions is critical for global sustainability. While existing literature has largely treated climate change as an exogenous shock that undermines renewable energy systems, this study re-examines that pre...

A High-Voltage Short-Burst Electroacoustic Measurement Method for Piezoelectric Acoustic Logging Transmitters

Piezoelectric acoustic logging transmitters are commonly evaluated using low-voltage small-signal impedance measurements, whereas their practical operation involves high-voltage, high-current, finite-cycle short-burst excitation. This difference makes it difficult to predict the...

CO2 Extraction of Shale Oil from Nanoscale Variable-Diameter Blind Pores from a Molecular Dynamic Perspective

Shale oil, despite its substantial reserves and significant development potential, presents a great extraction challenge. The existence of micro- and nanopores within shale formations renders conventional recovery methods largely ineffective, resulting in a limited recovery facto...

Corrosion Product Films as Natural Barriers for Hydrogen Energy Pipelines: Structure‐Permeation Correlations

ABSTRACT Ensuring the integrity of hydrogen‐blended natural gas (HBNG) infrastructure is pivotal for the sustainable hydrogen energy landscape, yet the surface interactions governing hydrogen embrittlement remain a critical challenge. This study presents a multiscale quantitative...

Stability and Error Estimates of Local Discontinuous Galerkin Methods for Convection-Diffusion Equations in Polar Coordinates

In this paper, we develop a local discontinuous Galerkin (LDG) method for convection-diffusion equations in polar coordinates and derive the stability and error estimates. Since the PDEs in polar coordinates differ from those in Cartesian coordinates, the inner products and norms...

Three-dimensional numerical simulation of successive bubble condensation in mini-channels with VOSET method

In this paper, based on the energy jump model, the VOSET method is applied to study the condensation dynamics and heat transfer characteristics of successive bubbles in a three-dimensional mini-channel. The effects of liquid subcooling, inlet velocity distribution, initial bubble...

Kinetics of natural gas hydrate formation and bed thickness evolution in wax-containing systems under multiple operating conditions

Wax-containing multiphase systems can undergo concurrent wax precipitation and natural gas hydrate formation under high-pressure and low-temperature conditions, producing cohesive composite beds that increase flow assurance risk. However, the coupled effects of operating variable...

HARM: Heterogeneous Feature Fusion and Hierarchical Adaptive Reconstruction Model for HVAC on/off Timing Prediction

Intermittent use of meeting rooms in public buildings accounts for a substantial share of avoidable heating, ventilation, and air-conditioning (HVAC) energy consumption, making accurate HVAC on/off lead-time prediction important for energy-efficient operation. However, existing m...

Multiphysics Modeling and Microscopic Analysis of Water-Based Heat Extraction from Hot Dry Rock Reservoirs

Global geothermal exploitation has not yet adequately compensated for the shortage of fossil fuel resources, primarily owing to limited heat transfer efficiency and the adoption of inappropriate development strategies. This study develops a fluid–structure interaction model tailo...

Revealing How to Prepare Polymer Gels under High-Temperature and High-Salinity Conditions

Abstract Polymer gel performance and stability under high-temperature, high-salinity conditions critically constrain their practical applications. While gels have been successfully formulated at temperatures exceeding 100 °C and brine salinities above 4 × 104 mg·L–1, the quantita...

Triple‐Phase Synergistic Bulk‐Surface Engineering Enables High‐Rate and Long‐Cycling P2/O3‐Based Cathode for Na‐Ion Batteries

ABSTRACT Layered oxide cathodes hold great promise for Na‐ion batteries (NIBs) but suffer from rapid performance degradation under high voltage, primarily arising from severe lattice strain, transition metal migration, and detrimental surface degradation. Here, we report a triple...

A size-dependent interfacial passivation strategy for achieving long-cycle and high-rate performance of silicon anodes in sulfide solid-state batteries

Silicon (Si) is considered an important candidate anode material for sulfide-based all-solid-state batteries (ASSBs), yet its pronounced volume variation during cycling readily induces solid-solid interfacial instability, severely limiting its electrochemical performance. In this...

Recent advances in the green synthesis of N i‐based catalysts for biomass hydrogenation: A review

Abstract To mitigate fossil energy depletion and environmental pollution, hydrodeoxygenation (HDO) of biomass into hydrocarbon biofuels has emerged as a crucial pathway for energy transition. Ni‐based catalysts hold great promise for industrial applications owing to their abundan...

Mismatch between oil abundance and apparent displacement response in lacustrine shales: The role of wettability in the Triassic Chang 73 shale, Ordos Basin

Oil abundance alone does not fully describe displacement behavior in lacustrine shales. Here, we examine how this behavior varies with wettability. We investigated 37 core samples obtained from the third submember of the Chang 7 Member (Chang 7 3 ) of the Upper Triassic Yanchang...