Dissertation/ Thesis
Innovative Real-Time Aerodynamic Drag Optimization Strategy for Enhancing Vehicle Energy Efficiency ; Stratégie innovante d'optimisation de la traînée aérodynamique en temps réel pour l'amélioration de l'efficacité énergétique des voitures
| العنوان: | Innovative Real-Time Aerodynamic Drag Optimization Strategy for Enhancing Vehicle Energy Efficiency ; Stratégie innovante d'optimisation de la traînée aérodynamique en temps réel pour l'amélioration de l'efficacité énergétique des voitures |
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| المؤلفون: | Cembalo, Agostino |
| المساهمون: | Institut Pprime UPR 3346 (PPrime Poitiers ), Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA )-Centre National de la Recherche Scientifique (CNRS), ISAE-ENSMA Ecole Nationale Supérieure de Mécanique et d'Aérotechique - Poitiers, Jacques Borée, Patrick Coirault, Clement Dumand |
| المصدر: | https://theses.hal.science/tel-04627261 ; Autre. ISAE-ENSMA Ecole Nationale Supérieure de Mécanique et d'Aérotechique - Poitiers, 2024. Français. ⟨NNT : 2024ESMA0007⟩. |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2024 |
| المجموعة: | Université de Poitiers: Publications de nos chercheurs.ses (HAL) |
| مصطلحات موضوعية: | Road testing, Track testing, Base pressure, Recursive control, Drag reduction, Adpatative flow control, Tests sur route, Tests sur circuit, Pression au culot, Contrôle récursif, Réduction de la traînée, Contrôle adptatif de l'écoulement, [SPI.OTHER]Engineering Sciences [physics]/Other |
| الوصف: | The reduction of CO2 emissions and environmental footprint represents a major challenge for the automotive industry in the 21st century, with approximately 72% of greenhouse gas emissions in the European transportation sector attributed to road transport. To address this issue, automotive manufacturers are increasingly focusing on reducing the environmental footprint of their vehicles and minimizing energy consumption. In this context, car aerodynamics plays a crucial role. This study therefore explores the challenges and opportunities associated with real-time control of vehicle’s wakes using a Predictive Control with Recursive model estimation based on a Subspace method (RSPC). We first characterize the wake of a full-scale vehicle, both in wind tunnel and on-road. The results highlight the importance of low-frequency phenomenons and quasi-static wake movements. Subsequently, we implement a control methodology aimed at regulating the angular positions of rigid flaps located at the base of the studied models to maintain a prescribed base pressure state. Among the significant results, we note that the control law succeeds in achieving defined objectives under varied conditions, including variations in yaw angle and disturbances in the underflow through the use of a movable grid placed upstream of the vehicle. The observed benefits in terms of aerodynamic drag are remarkable and model-dependent, while maintaining relatively low energy consumption. The latter varies between 0.35% and 0.6% of the dissipated aerodynamic power. In conclusion,this study opens new perspectives for vehicle aerodynamic control, offering significant opportunities for energy consumption reduction and, consequently, greenhouse gas emissions. It thus aim to mitigating the effects of climate change. ; La réduction des émissions de CO2 et de l’empreinte environnementale représente un défi majeur pour l’industrie automobile au XXIe siècle, avec environ 72% des émissions de gaz à effet de serre dans le secteur des transports européens attribuées ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | French |
| Relation: | NNT: 2024ESMA0007; tel-04627261; https://theses.hal.science/tel-04627261; https://theses.hal.science/tel-04627261/document; https://theses.hal.science/tel-04627261/file/2024ESMA0007_cembalo.pdf |
| الاتاحة: | https://theses.hal.science/tel-04627261 https://theses.hal.science/tel-04627261/document https://theses.hal.science/tel-04627261/file/2024ESMA0007_cembalo.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.8CA35AEA |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |