A5008701978- Fluid Dynamics and Turbulent Flows
- Heat Transfer Mechanisms
- Rheology and Fluid Dynamics Studies
- Microfluidic and Capillary Electrophoresis Applications
- Fluid Dynamics and Heat Transfer
- Fluid Dynamics and Vibration Analysis
- Heat Transfer and Optimization
- Fluid Dynamics and Mixing
- Plant Water Relations and Carbon Dynamics
- Additive Manufacturing and 3D Printing Technologies
- Advanced Materials and Mechanics
- Structural Integrity and Reliability Analysis
- Heat Transfer and Boiling Studies
- Structural Health Monitoring Techniques
- Fatigue and fracture mechanics
- Hybrid Renewable Energy Systems
- Advanced Battery Technologies Research
- Aluminum Alloy Microstructure Properties
- Electric Vehicles and Infrastructure
- Petroleum Processing and Analysis
- Reservoir Engineering and Simulation Methods
- Innovations in Concrete and Construction Materials
- Hydrogen Storage and Materials
- Advancements in Battery Materials
- Blood properties and coagulation
Polytechnic Institute of Viana do Castelo
2017-2025
Universidade do Porto
2001-2018
Battery electrical vehicle (BEV) ownership has increased in recent years. There is a general concern over the life cycle of batteries used such vehicles. This study provides comprehensive overview electric vehicles, encompassing their technical evolution, autonomy, and ownership. The analysis delved into various types utilized these examining composition constituent materials mechanisms underlying operation. Additionally, it assessed performance terms energy density storage, recharge...
This study focuses on the development of a machine learning (ML) model to elaborate predictions structural damage in submerged structures due ocean states and subsequently compares it real-life case 6-month experiment with benthic lander bearing multitude sensors. The ML uses wave parameters such as height, period direction input layers, which describe conditions, strains selected points structure output layers. To streamline dataset generation, simplified approach was adopted, integrating...
This study explores the fatigue properties of EN AW-6082-T6 aluminum alloy in gigacycle range (106–109 cycles), using ultrasonic resonance testing at 20 kHz a push–pull mode with symmetric load cycle (R = −1). A custom-built machine, developed TU-Varna, comprising generator, train (including high-power transducer, booster, custom-made sonotrode, and specimen), monitoring, data logging systems, an air-cooling capability, was used for experiments conducted. Bezier curve amplification ratio...
Additive manufacturing (AM) has gained significant traction in the production of high-performance metallic components, yet concerns persist regarding consistency powder materials and mechanical properties 3D-printed parts. This study addresses these challenges through a detailed analysis maraging steel part manufactured using laser bed fusion. The demonstration was evaluated for geometric accuracy, surface roughness, chemical composition, microstructure, properties, including hardness...
The evolution of viscoelastic turbulent models, in the last years, has been significant due to direct numeric simulation (DNS) advances, which allowed us capture detail effects and development closures. New closures are proposed for fluids described by finitely extensible nonlinear elastic-Peterlin constitutive model. One closure developed context isotropic consists a modification viscosity include an elastic effect, capable predicting, with good accuracy, behaviour different drag...
Abstract Measurements of the power consumption and mean turbulent velocities in wall jet a stirred vessel flow, powered by hyperboloid impeller, were carried out. The fluids aqueous solutions tylose, CMC xanthan gum (XG), at weight concentrations ranging from 0.1% to 0.6%, which exhibited varying degrees shear‐thinning viscoelasticity. impeller parameter k Metzner Otto (1957) was found be equal 27.2 ±4. In Reynolds number range 10 3 × 4 mixing reduced for all non‐Newtonian fluids, but never...
This article focuses on the use of fused deposition modeling (FDM) technology to manufacture and test polymer isogrid lattice cylindrical shell (LCS) structures with equilateral triangular unit-cells using non-professional conventional 3D printing software hardware. A parametric automated model for these is created in SolidWorks Visual Basic (VBA) programming language. Different configurations LCS structure are modeled, manufactured, tested order determine compressive structural strength...
The aim of this paper is the study storage hydrogen in liquid state, LH2, with a focus on thermal gains for cylindrical and spherical tank geometries. A given volume was assumed; three geometries such were taken, similar to most common tanks LH2 storage: (vertical horizontal) spherical. An integrated refrigeration system considered stored at temperature around 22 K pressure 3 bar. Then, energy expenditure by maintain state determined compared value contained order compare method other...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation A. Cavadas, F. T. Pinho, J. M. Campos; Numerical Investigation of the Flow Field in Confined Impinging Jets Non Newtonian Fluids. AIP Conf. Proc. 7 July 2008; 1027 (1): 165–167. https://doi.org/10.1063/1.2964621 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote...
Abstract Measurements of power consumption in stirred vessel flows powered by a Rushton and an hyperboloid impeller were carried out. The fluids aqueous solutions tylose, CMC xanthan gum at weight concentrations ranging from 0.1% to 0.6% also included Newtonian fluids. For the turbine addition polymer increased Newton number about 13–20% Reynolds numbers range 1,000–3,000, whereas with decreased 13%. This decrease was especially noticeable for absent 0.2% tylose solution flow. Concentrated...