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[Articles In Press]
Experimental and Theoretical Investigation of Trim Tab Effects on Hydrodynamic Resistance and Planning Performance of High-Speed Planning Vessels
P. 1-13
Abstract
(1414 Views) |
Full-Text (PDF)
(521 Downloads)
| Graphical Abstract
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Highlights
| Audio file of the article abstract [MP3] (38 Download)
- Experimental towing tank tests were conducted on two 40-foot scaled beam-type planning vessel models equipped with adjustable trim tabs.
- Results show that optimal trim tab deployment significantly reduces hydrodynamic resistance and lowers the hump resistance region.
- Trim Tab configuration “B” enabled earlier planning transition, reduced bow impact, and lowered power demand compared to untrimmed and Tab A cases.
- Scaling effects, model construction tolerances, and ITTC-recommended procedures were carefully addressed to ensure fidelity with full-scale performance.
- Findings provide practical insights into improving propulsion efficiency, vessel stability, and structural safety in high-speed marine craft design.
Machine Learning Models Development to Predict Corroded Pipeline Behavior Considering Defects Interaction
P. 14-31
Abstract
(1313 Views) |
Full-Text (PDF)
(456 Downloads)
| Graphical Abstract
| Highlights
Highlights
| Audio file of the article abstract [M4A] (41 Download)
- Developed LHS-FEM database to predict MVMS in corroded pipelines using ML.
- Integrated ABAQUS with Python to automate nonlinear FE analysss for pipeline defects.
- Evaluated five ML models with grid search and k-fold to optimize prediction accuracy.
- NN and DTR models performed well in predicting MVMS; NN showed robust generalization.
- Used learning curve analysis and PI method to validate models and assess parameters.
Reconciling Per-Capita Water Metrics with Aquifer Stress on Qeshm Island: Pathways for Coastal Blue Economy Development
P. 32-47
Abstract
(527 Views) |
Full-Text (PDF)
(247 Downloads)
| Graphical Abstract
| Highlights
Highlights
1- Comprehensive island-scale water-budget shows that population growth not rainfall variabilityis the primary driver of scarcity on Qeshm.
2- Trend scenarios project a sustained decline in per-capita renewable water, pushing the island toward severe stress within two decades without intervention.
3- A ≤40% extraction cap on renewable flows enables viable mixed allocations (municipal–agriculture–industry) while remaining within sustainable limits.
4- Long-term monitoring documents simultaneous groundwater-level decline and rising EC, evidencing coupled quantity–quality stress and heightened seawater-intrusion risk.
5- A practical management toolbox demand restraint and loss control, managed aquifer recharge, fit-for-purpose reuse, and desalination as a quantitative backstop with transparent energy/brine accountingsupports resilient, cost-effective island water security.
| Audio file of the article abstract [MP3] (14 Download)
1- Comprehensive island-scale water-budget shows that population growth not rainfall variabilityis the primary driver of scarcity on Qeshm.
2- Trend scenarios project a sustained decline in per-capita renewable water, pushing the island toward severe stress within two decades without intervention.
3- A ≤40% extraction cap on renewable flows enables viable mixed allocations (municipal–agriculture–industry) while remaining within sustainable limits.
4- Long-term monitoring documents simultaneous groundwater-level decline and rising EC, evidencing coupled quantity–quality stress and heightened seawater-intrusion risk.
5- A practical management toolbox demand restraint and loss control, managed aquifer recharge, fit-for-purpose reuse, and desalination as a quantitative backstop with transparent energy/brine accountingsupports resilient, cost-effective island water security.
