Literature Synthesis: Batch 04 Agent 3 (Files 681-720)¶
Generated: 2026-04-17
Individual Paper Summaries¶
| # | Author | Year | Title | Core Finding | Method | Tags |
|---|---|---|---|---|---|---|
| 1 | Verma et al. | 2023 | Review of sub-synchronous interaction in wind integrated power systems | SSI in DFIG-based wind systems causes stability issues; supplementary damping controllers in converter controllers are effective mitigation | Review; classification of SSI phenomena | SSI, DFIG, grid stability, damping controller |
| 2 | Wang et al. | 2023 | Accelerating energy transition towards PV and wind in China | Optimized deployment of 3,844 PV/wind plants can increase capacity from 9 to 15 PWh/yr; abatement cost drops from $97 to $6/tCO2 | Spatially explicit energy-system optimization model | energy transition, China, PV, wind, optimization |
| 3 | Wang et al. | 2023 | Effects of installation advancement ratio on cyclic uplift response of screw pile | Over-flighting (AR < 1.0) enhances cyclic uplift performance via increased radial stress on shaft; shaft friction controls cyclic behavior | Centrifuge tests + DEM numerical modeling | screw pile, over-flighting, cyclic uplift, centrifuge, DEM |
| 4 | Werthen et al. | 2023 | Aero-structural coupled optimization of rotor blade for 25 MW wind turbine | Coupled aero-structural optimization reduces LCoE for upscaled 25 MW turbines | Coupled aero-structural optimization | blade design, 25 MW, LCoE, optimization |
| 5 | Wiley et al. | 2023 | Sensitivity analysis of numerical modeling input parameters on FOWT loads | Turbulent wind velocity std dev is the most influential parameter; current velocity dominates mooring loads; wave characteristics less influential for ultimate loads | Elementary effects sensitivity analysis; OpenFAST | FOWT, sensitivity analysis, load modeling, uncertainty |
| 6 | Xiong et al. | 2023 | Impedance reshaping method of DFIG to eliminate PLL influence | Compensating rotor current dynamic before PI controller nearly eliminates frequency coupling and improves stability | MIMO impedance modeling; MATLAB/Simulink | DFIG, PLL, impedance reshaping, frequency coupling |
| 7 | Yang et al. | 2023 | Numerical simulation of OWT pile foundation scour with artificial reefs | Different reef arrangements alter scour depth around monopile foundations; integration of wind farms and marine ranches improves ecological outcomes | CFD numerical simulation | scour, monopile, artificial reef, marine ranch |
| 8 | Ye et al. | 2023 | AIRU-WRF: Physics-guided spatio-temporal wind forecasting model | Physics-guided ML outperforms pure data-driven and physics-based benchmarks for short-term offshore wind speed/power forecasting | Physics-guided ML combining NWP with local observations | wind forecasting, physics-informed ML, offshore wind |
| 9 | Yoon et al. | 2023 | Measurements of underwater noise from OWT off southwest Korea | Characterized operational underwater noise of OWT; provides baseline for environmental impact assessment | Field measurements of underwater acoustics | underwater noise, OWT, environmental impact, Korea |
| 10 | Zhang et al. | 2023 | Hydrodynamic characteristics of three-bucket jacket foundation during lowering | Motion response peaks at 1.5x bucket height during lowering; natural period increases with depth; proposed new launching technology | Time domain simulation via Moses software | bucket jacket, hydrodynamic, installation, OWT |
| 11 | Zhong et al. | 2023 | Reduced-order digital twin and latent data assimilation for wildfire prediction | ROM-based digital twin runs 500x faster than JULES-INFERNO; latent data assimilation corrects iterative prediction drift | Reduced-order modeling, deep learning, data assimilation | digital twin, ROM, wildfire, data assimilation |
| 12 | Zhou et al. | 2023 | Pile group effect modeling of scoured pile group bridge foundations | Parametric sensitivity analysis of scoured pile groups under lateral loads in sandy soils; pile group effects significantly change with scour | p-y curve method; parametric sensitivity analysis | pile group, scour, lateral load, bridge foundation, sandy soil |
| 13 | Zhu et al. | 2023 | Asymmetrical autoencoder with DCST layer for gearbox sensor data compression | DCST layer reduces trainable parameters and improves reconstruction accuracy; works with limited training samples | Novel autoencoder with discrete cosine Stockwell transform | autoencoder, gearbox, data compression, fault diagnosis |
| 14 | Zou et al. | 2023 | Integrated equivalent model of PMSG wind turbine for large-scale OWF simulation | Node-elimination algorithm preserves individual WT characteristics while achieving high simulation efficiency in EMT programs | Integrated equivalent EMT modeling | PMSG, OWF, EMT simulation, equivalent model |
| 15 | Abdelhak et al. | 2024 | Unsupervised data-driven approach for scour damage detection in monopiles | Novelty detection using only healthy-condition data effectively classifies scour damage under varying environmental conditions | Unsupervised ML; acceleration data; novelty detection | scour, monopile, SHM, unsupervised ML, damage detection |
| 16 | Adekanmbi et al. | 2024 | Implementing H&S standards in offshore wind farms | Remote monitoring, predictive analytics, and standardized training programs are key to addressing unique offshore safety challenges | Review of safety standards and regulatory frameworks | health and safety, offshore wind, risk management |
| 17 | Akhtar et al. | 2024 | Larger wind turbines as a solution to reduce environmental impacts | Replacing 5 MW with 15 MW turbines increases CF by 2-3% while reducing impacts on wind speed, kinetic energy, and sea surface heat fluxes | High-resolution regional climate model with wind farm parametrization | large turbines, environmental impact, capacity factor, North Sea |
| 18 | Aladejare et al. | 2024 | Reliability of Monte Carlo simulation for estimating UCS of intact rock | MCS with MLR effectively estimates UCS; BTS is the most influential parameter; simulated mean (119.10 MPa) closely matches lab (118.42 MPa) | Monte Carlo simulation; multiple linear regression | UCS, rock mechanics, Monte Carlo, geotechnical |
| 19 | Aldungarova et al. | 2024 | Analysis of methods for determining intermediate geotechnical characteristics | Kriging outperforms other interpolation methods (IDW, Spline, Thiessen) for spatial estimation of geotechnical properties | Review of interpolation methods; GIS integration | geotechnical interpolation, Kriging, GIS |
| 20 | Almeida et al. | 2024 | Centrifuge modelling of monopiles in quartz and carbonate sands | Lateral capacity doubled after 4,800 cycles; carbonate sand shows greater stiffness degradation; secant stiffness increases exponentially in first 500 cycles | Centrifuge modelling; triaxial, resonant column, bender element tests | monopile, carbonate sand, cyclic lateral, centrifuge |
| 21 | Alqawas et al. | 2024 | Experimental and numerical study of soil strata for underground transportation | Maximum tunnel deformation at crown; ground settlement varies 4-25 mm across sites; Mohr-Coulomb model captures field variability | FEM (ABAQUS); field exploration; Mohr-Coulomb | tunnel, FEM, soil characterization, Yemen |
| 22 | Al-Subaihawi et al. | 2024 | Coupled aero-hydro-geotech real-time hybrid simulation of OWT monopile | RTHS framework links OpenFAST with physical soil model to capture nonlinear soil-foundation interaction in real time | Real-time hybrid simulation (RTHS); OpenFAST | RTHS, monopile, soil-structure interaction, OpenFAST |
| 23 | Asia et al. | 2024 | Deformation mechanisms of semi-integral bridge abutments in dry and saturated soil | Moderate earthquake liquefies loose sand under abutment; saturated conditions cause severe abutment settlement | Centrifuge testing with earthquake shaker | bridge abutment, liquefaction, centrifuge, seismic |
| 24 | Bantchina et al. | 2024 | Corn yield prediction using proximal soil sensing, remote sensing, and ML | Fusion of Vis-NIRS soil properties, Sentinel-2 spectral indices, and ML achieves high accuracy for site-specific corn yield prediction | Vis-NIRS; Sentinel-2; ML regression; clustering for management zones | precision agriculture, yield prediction, remote sensing, ML |
| 25 | Blondel et al. | 2024 | Towards vortex-based wind turbine design using GPUs and wake accommodation | GPU-accelerated free vortex wake methods become computationally viable for design, overcoming BEM limitations for large/flexible/floating turbines | Vortex filament methods on GPUs | vortex method, GPU, BEM alternative, wind turbine design |
| 26 | Branlard et al. | 2024 | Digital twin for FOWT validated using full-scale TetraSpar prototype | Kalman filter + aerodynamic estimator achieves 10-15% error on damage equivalent tower loads compared to field measurements | Physics-based digital twin; Kalman filter; virtual sensing | digital twin, FOWT, Kalman filter, fatigue, TetraSpar |
| 27 | Cao et al. | 2024 | Effect of scour on fatigue life of OWT and prevention through TMD | Scour decreases fatigue life by ~24%; TMD with 1% mass ratio increases fatigue life by ~65% at 1.3D scour depth; optimization extends life by additional 25% | Simplified modal model; TMD optimization | scour, fatigue, TMD, monopile, passive control |
| 28 | Carrasco et al. | 2024 | Type-curves for seepage under sheet-piles in limited 2D geometries | Dimensionless type-curves provide easy-to-use charts for seepage estimation under sheet-piles for maritime/fluvial dewatering | Dimensionless analysis; flownets; numerical modeling | seepage, sheet-pile, dewatering, dimensionless analysis |
| 29 | Cesaro et al. | 2024 | Interaction domains for capacity- and performance-based design of pile groups | Exact closed-form solutions for Q-M failure loci enable non-conservative pile group design under combined vertical-moment loads | Analytical closed-form solution; numerical validation | pile group, bearing capacity, interaction domain, design |
| 30 | Chatrabhuj et al. | 2024 | Geosynthetic materials as soil reinforcement | Comprehensive review of geosynthetics for slope stabilization, embankment reinforcement, foundation improvement, and environmental applications | Literature review | geosynthetics, soil reinforcement, construction, review |
| 31 | Cheng et al. | 2024 | Lateral cyclic responses of OWT tripod suction bucket in clays | Contact condition, loading direction, and cyclic mode significantly affect permanent rotation and failure mechanism of tripod bucket foundations | 3D FEM; bounding surface clay model; validation against model tests | suction bucket, tripod, cyclic, clay, OWT |
| 32 | Chmelnizkij | 2024 | Improved double-point material point method for dynamic geotechnical problems | Improved 2P-MPM handles large deformations in geotechnical problems with better accuracy than standard MPM | Material Point Method (double-point variant) | MPM, large deformation, geotechnical, numerical method |
| 33 | Cici et al. | 2024 | Numerical modelling of soil-tire crumb mixture for seismic isolation | 30% tire crumb ratio achieves 60-70% reduction in seismic acceleration; optimum energy absorption for base isolation | Experimental cyclic loading + FEM (PLAXIS 2D) | seismic isolation, tire crumb, soil mixture, base isolation |
| 34 | Corigliano et al. | 2024 | Role of rafts in piled foundations on cohesive soils | Raft contribution to piled foundation capacity depends on pile-raft-soil coupling; 3D FEA reveals bearing strength surfaces under combined loading | 3D finite element analysis | piled raft, cohesive soil, bearing capacity, combined loading |
| 35 | Dhandapani et al. | 2024 | Multi-channel multi-modal deep learning for leaf infection and soil prediction | M2C2NN-LSTM with multi-stage concatenation strategies improves joint leaf infection and soil property prediction | DenseNet + ConvLSTM; multi-channel concatenation | deep learning, agriculture, leaf disease, soil, CNN-LSTM |
| 36 | Ding et al. | 2024 | Nonlinear wave forces on monopile OWT under directionally spread waves | Nonlinear loading up to 40% of total; wider wave spreading reduces high-order harmonics; uni-directional waves produce worst-case nonlinear forces | Phase-based harmonic separation; wave tank experiments | monopile, nonlinear waves, wave loading, directional spreading |
| 37 | Drangsfeldt et al. | 2024 | Combined implicit-explicit vibration-based SHM for wind turbine blades | Combined approach improves damage detection capability for wind turbine blades under operational conditions | Vibration-based SHM; implicit-explicit method | SHM, wind turbine blade, damage detection, vibration |
| 38 | Ebbehoj et al. | 2024 | Experimental validation of short-term damping estimation for wind turbines | GP-TARMA effectively estimates short-term damping under nonstationary conditions; validated on lab shear frame and 7 MW flutter test | GP-TARMA modeling; OMA; lab + full-scale validation | damping estimation, OMA, flutter, GP-TARMA, wind turbine |
| 39 | Esmailzade et al. | 2024 | Comparison of FCV and full-scale testing for helical and expanded piles | FCV lab setup provides reasonable agreement with full-scale tests for helical/expanded pile load-displacement behavior | FCV physical modeling; full-scale load tests | helical pile, expanded pile, FCV, load test, geotechnical |
| 40 | Espanol-Espinel et al. | 2024 | Alternative foundation systems for OWT in liquefiable soils | Monopile alone exceeds rotation limits post-earthquake; composite monopile + outrigger system maintains stability in liquefiable soils | Centrifuge modelling with seismic loading | liquefaction, OWT foundation, monopile, outrigger, centrifuge |
Synthesis¶
CONSENSUS¶
-
Scour is a critical threat to OWT monopile integrity and fatigue life. Multiple papers (Abdelhak 2024, Cao 2024, Zhou 2023, Yang 2023) converge on the finding that scour reduces foundation stiffness, shifts natural frequencies, and accelerates fatigue damage. Passive control devices (TMDs) and scour monitoring through SHM are established mitigation strategies.
-
Cyclic loading governs offshore foundation design. Studies on monopiles in carbonate/quartz sand (Almeida 2024), screw piles (Wang 2023), and tripod suction buckets (Cheng 2024) all confirm that cyclic performance, not monotonic capacity, is the controlling design criterion. Foundations generally stiffen with moderate cycling but accumulate permanent displacement that must remain within serviceability limits.
-
Physics-informed and hybrid ML approaches outperform pure data-driven models for wind/ocean systems. Ye (2023) AIRU-WRF, Branlard (2024) Kalman-filter digital twin, and Ebbehoj (2024) GP-TARMA all demonstrate that embedding physical constraints into ML frameworks yields better generalization and interpretability than black-box approaches.
-
Digital twins are maturing rapidly for OWT applications. Branlard (2024) validates a full-scale floating turbine digital twin at 10-15% error on fatigue loads; Zhong (2023) achieves 500x speedup with ROM-based wildfire twins. The field is converging on physics-based virtual sensing + data assimilation as the standard architecture.
-
Centrifuge testing remains the gold standard for geotechnical validation of offshore foundations (Wang 2023, Almeida 2024, Asia 2024, Espanol-Espinel 2024), bridging the gap between 1-g lab tests and prohibitively expensive field tests.
DEBATES¶
-
Foundation type selection for next-generation OWT. Monopiles dominate (77% market share per Abdelhak 2024), but tripod suction buckets (Cheng 2024), screw piles (Wang 2023), and composite outrigger systems (Espanol-Espinel 2024) are contenders for deeper water and seismic zones. No consensus on optimal foundation for liquefiable soils.
-
BEM vs. vortex methods for aerodynamic design. Blondel (2024) argues vortex methods are needed for large/floating turbines where BEM assumptions break down, but computational cost remains a barrier despite GPU acceleration. Werthen (2023) still uses coupled BEM for 25 MW design.
-
Physics-based vs. data-driven digital twins. Branlard (2024) advocates physics-based models for transferability; Zhong (2023) uses deep-learning surrogates for speed. The community has not settled on how much physics must be embedded for reliable operation.
-
Scour protection strategy. Cao (2024) proposes passive structural control (TMDs) to mitigate scour effects rather than preventing scour itself (armor/flow-altering), arguing existing protection cannot fully prevent scour. Yang (2023) proposes artificial reefs as dual-purpose ecological-engineering protection. The optimal balance between prevention and mitigation remains debated.
GAPS¶
-
Long-term cyclic performance of novel foundations (screw piles, suction buckets) under realistic multi-directional loading. Most studies use idealized loading; real ocean loads are stochastic and multi-directional (Ding 2024 highlights the importance of directional spreading).
-
Carbonate sand behavior under cyclic lateral loading is far less understood than quartz sand behavior (Almeida 2024 is one of very few studies). This gap is critical for tropical/subtropical OWT deployment.
-
Validated digital twin frameworks for soil-foundation systems are absent. Branlard (2024) covers the superstructure; Al-Subaihawi (2024) introduces RTHS for soil-pile interaction, but no integrated digital twin spans the full aero-hydro-geotech chain with validated soil modeling.
-
Seismic design of OWT foundations. Espanol-Espinel (2024) is one of few studies addressing liquefaction risk for OWT foundations. As offshore wind expands to seismically active regions (SE Asia, US west coast), this gap is urgent.
-
Unsupervised SHM methods for scour are nascent. Abdelhak (2024) demonstrates feasibility, but validation is limited to numerical data; no field-validated unsupervised scour monitoring system exists.
METHODS¶
| Method Category | Papers | Maturity |
|---|---|---|
| Centrifuge modeling | Wang 2023, Almeida 2024, Asia 2024, Espanol-Espinel 2024 | Mature |
| 3D FEM (ABAQUS, PLAXIS) | Alqawas 2024, Cheng 2024, Cici 2024, Corigliano 2024 | Mature |
| Physics-guided ML | Ye 2023, Branlard 2024, Ebbehoj 2024 | Emerging |
| Real-time hybrid simulation | Al-Subaihawi 2024 | Early-stage |
| Material Point Method | Chmelnizkij 2024 | Developing |
| Reduced-order modeling / digital twin | Zhong 2023, Branlard 2024 | Emerging |
| Unsupervised novelty detection for SHM | Abdelhak 2024, Drangsfeldt 2024 | Early-stage |
| DEM (Discrete Element Method) | Wang 2023 | Mature for granular |
| Sensitivity / elementary effects analysis | Wiley 2023, Zhou 2023 | Mature |
BENCHMARKS¶
| Benchmark | Value | Source |
|---|---|---|
| Monopile market share for OWT | 77% | Abdelhak 2024 |
| Fatigue life reduction from scour (1.3D depth) | ~24% | Cao 2024 |
| Fatigue life increase from TMD (1% mass ratio) | ~65% | Cao 2024 |
| Digital twin fatigue DEL accuracy (simulation) | 5-10% error | Branlard 2024 |
| Digital twin fatigue DEL accuracy (field) | 10-15% error | Branlard 2024 |
| ROM surrogate speedup vs. physics model | 500x | Zhong 2023 |
| CF increase with 15 MW vs 5 MW turbines | 2-3% | Akhtar 2024 |
| Nonlinear wave loading fraction | up to 40% of total | Ding 2024 |
| Lateral capacity increase after 4,800 cycles | ~2x | Almeida 2024 |
| Seismic acceleration reduction (30% tire crumb) | 60-70% | Cici 2024 |
| China PV+wind capacity target (optimized) | 15 PWh/yr by 2060 | Wang 2023 |
| Abatement cost (optimized deployment) | $6/tCO2 | Wang 2023 |
| EU offshore wind target 2050 | 300 GW | Akhtar 2024 |