Browsing by Author "Rodríguez-García, JuanDeDios"
Now showing items 1-20 of 20
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A new way to obtain climate files in areas with the presence of microclimates by applying the Sandia method: a Galician case study
Couce-Casanova, Antonio; Rodríguez-García, JuanDeDios; Lamas, M.I.; Orosa, José A. (MDPI, 2022-09-25) -
Analysis of a nature-inspired shape for a vertical axis wind turbine
Blanco Damota, Javier; Rodríguez-García, JuanDeDios; Couce-Casanova, Antonio; Telmo Miranda, Javier; Caccia, Claudio Giovanni; Lamas, M.I. (MDPI, 2022-07-12)[Abstract] Wind energy is gaining special interest worldwide due to the necessity of reducing pollutant emissions and employ renewable resources. Traditionally, horizontal axis wind turbines have been employed but certain ... -
Analysis of a Nature-Inspired Shape for a Vertical Axis Wind Turbine
Blanco Damota, Javier; Rodríguez-García, JuanDeDios; Couce-Casanova, Antonio; Telmo Miranda, Javier; Caccia, Claudio Giovanni; Lamas, M.I. (MDPI, 2022-07-12)[Abstract] Wind energy is gaining special interest worldwide due to the necessity of reducing pollutant emissions and employ renewable resources. Traditionally, horizontal axis wind turbines have been employed but certain ... -
Analysis of the Pre-injection Configuration in a Marine Engine Through Several MCDM Techniques
Rodríguez, Carlos G.; Lamas, M.I.; Rodríguez-García, JuanDeDios; Caccia, Claudio (University of Zagreb Faculty of Mechanical Engineering and Naval Architecture, 2021)[Abstract] The present manuscript describes a computational model employed to characterize the performance and emissions of a commercial marine diesel engine. This model analyzes several pre-injection parameters, such as ... -
Analysis of the Pre-Injection System of a Marine Diesel Engine Through Multiple-Criteria Decision-Making and Artificial Neural Networks
Rodríguez, C.G.; Lamas, M.I.; Rodríguez-García, JuanDeDios; Abbas, A. (Mathematical Institute, Slovak Academy of Sciences, 2022-01-01)[Abstract] The present work proposes several pre-injection patterns to reduce nitrogen oxides in the Wärtsilä 6L 46 marine engine. A numerical model was carried out to characterise the emissions and consumption of the ... -
Creation of a Typical Meteorological Year in Spain: Step by Step Application of the Method Based on UNE-EN ISO-15927-4:2011
Couce-Casanova, Antonio; López-de-Ullibarri, Ignacio; Lamas, M.I.; Rodríguez-García, JuanDeDios (DYNA, 2022-11)[Abstract]: Perceptible acceleration of the climate change process makes it necessary to update climate files, which are used, for example, for energy simulation of buildings. The process of preparing a climatic file ... -
Desarrollo de un sistema experimental de propulsión ondulante y del método de predicción de su comportamiento mediante CFD
Rodríguez-García, JuanDeDios (2010)[Resumo]O obxectivo da presente tese é o deseño dun propulsor ondulatorio que sexa aplicable a vehículos mariños e sistemas de impulsión de fluidos. Froito do estudo realizado proponse un deseño innovador de superficie ... -
Effect of multiple injection strategies on emissions and performance in the Wärtsilä 6L 46 marine engine. A numerical approach
Lamas, M.I.; Rodríguez-García, JuanDeDios; Castro-Santos, Laura; Carral Couce, Luis (Elsevier, 2019-01-01)[Abstract] The present paper proposes a Computational Fluid Dynamics model to analyze the operation cycle and exhaust gas composition in a four-stroke marine diesel engine, the Wärtsilä 6L 46. Once validated, the numerical ... -
Enhanced Performance of a Hydrokinetic Turbine Through a Biomimetic Design
Lamas, M.I.; Rodríguez-García, JuanDeDios; Couce-Casanova, Antonio; Blanco Damota, Javier; Caccia, Claudio Giovanni; Rebollido Lorenzo, José Manuel; Telmo Miranda, Javier (MDPI, 2024-08-02)[Abstract] Hydrokinetic energy constitutes a source of renewable energy. However, many regions have flow velocities that are too low for effective energy extraction, and conventional turbines are not suitable for these ... -
Ensayos experimentales para la obtención del coeficiente hidráulico como un factor relevante en el desarrollo del proyecto de un buque
Álvarez García, Ana; Rodríguez-García, JuanDeDios; González López, Primitivo B. (2010-11-15)[Resumen]En este artículo se presenta un estudio experimental del comportamiento de un modelo sujeto a la inundación progresiva de sus compartimentos. El estudio consta de varios ensayos mediante los que se inunda uno o ... -
Multi-criteria analysis to determine the most appropriate fuel composition in an ammonia/diesel oil dual fuel engine
Rodríguez, Carlos G.; Lamas, M.I.; Rodríguez-García, JuanDeDios; Abbas, Amr (MDPI, 2023-03-24)[Abstract] The possibility to employ alternative fuels is gaining special interest in the marine sector. There are several suitable candidates for traditional fossil fuels substitution. Among them, ammonia is a promising ... -
Numerical Analysis of Emissions from Marine Engines Using Alternative Fuels
Lamas, M.I.; Rodríguez, C.G.; Rodríguez-García, JuanDeDios; Telmo Miranda, Javier (Sciendo, 2015-12-30)[Abstract]: The current restrictions on emissions from marine engines, particularly sulphur oxides (SOx ), nitrogen oxides (NOx ) and carbon dioxide (CO2 ), are compelling the shipping industry to a change of tendency. In ... -
Numerical analysis of several port configurations in the Fairbanks-Morse 38D8-1/8 opposed piston marine engine
Lamas, M.I.; Rodríguez, Carlos G.; Rodríguez-García, JuanDeDios; Telmo Miranda, Javier (University of Zagreb. Faculty of Mechanical Engineering and Naval Architecture, 2015)[Abstract] The aim of the present paper is to analyze several port configurations in the Fairbanks-Morse 38D8-1/8 marine diesel engine. The motivation comes from the high number of intake and exhaust ports which characterizes ... -
Numerical Model of SO2 Scrubbing with Seawater Applied to Marine Engines
Lamas, M.I.; Rodríguez, C.G.; Rodríguez-García, JuanDeDios; Telmo Miranda, Javier (Sciendo, 2016-06-30)[Abstract]: The present paper proposes a CFD model to study sulphur dioxide (SO2) absorption in seawater. The focus is on the treatment of marine diesel engine exhaust gas. Both seawater and distilled water were compared ... -
Numerical Model to Analyze the Physicochemical Mechanisms Involved in CO₂ Absorption by an Aqueous Ammonia Droplet
Lamas, M.I.; Rodríguez-García, JuanDeDios; Rebollido Lorenzo, José Manuel (MDPI, 2021-04)[Abstract] CO₂ is the main anthropogenic greenhouse gas and its reduction plays a decisive role in reducing global climate change. As a CO₂ elimination method, the present work is based on chemical absorption using aqueous ... -
Optimization of a nature-inspired shape for a vertical axis wind turbine through a numerical model and an artificial neural network
Blanco Damota, Javier; Rodríguez-García, JuanDeDios; Couce-Casanova, Antonio; Telmo Miranda, Javier; Caccia, Claudio Giovanni; Lamas, M.I. (MDPI, 2022-08-11)[Abstract] The present work proposes an artificial neural network (ANN) to analyze vertical axis wind turbines of the Savonius type. These turbines are appropriate for low wind velocities due to their low starting torque. ... -
Possibilities of Ammonia as Both Fuel and NOᵪ Reductant in Marine Engines: A Numerical Study
Rodríguez, Carlos G.; Lamas, M.I.; Rodríguez-García, JuanDeDios; Abbas, Amr (MDPI, 2022-01)[Abstract] Nowadays, the environmental impact of shipping constitutes an important challenge. In order to achieve climate neutrality as soon as possible, an important priority consists of progressing on the decarbonization ... -
Proposal of a Nature-Inspired Shape for a Vertical Axis Wind Turbine and Comparison of Its Performance with a Semicircular Blade Profile
Blanco, Javier; Rodríguez-García, JuanDeDios; Couce-Casanova, Antonio; Lamas, M.I. (MDPI, 2021)[Abstract] In order to improve the efficiency of the Savonius type vertical axis wind turbine, the present work analyzes an improvement based on an innovative rotor geometry. The rotor blades are inspired on an organic ... -
Undulating Propulsion System Design
Rodríguez-García, JuanDeDios; González López, Primitivo B.; Couce-Casanova, Antonio; González-Filgueira, Gerardo (AEIPRO (Spanish Association of Project Engineering), 2010)[Abstract] Throughout history the practical implementation of propulsion mechanisms in the fluid environment based on the rotation has been easier to deal because of the state of the art in its time, and this has meant ... -
Vertical Axis Wind Turbines: Current Technologies and Future Trends
Damota, Javier; Lamas, M.I.; Couce-Casanova, Antonio; Rodríguez-García, JuanDeDios (2015-04)[Abstract] This paper, based on the pursuit of scientific articles published and recorded in the last five years (2010-2014) patents on VAWT technology, gives an image of the current situation of the treated ...