A5036912204- Hydraulic and Pneumatic Systems
- Cavitation Phenomena in Pumps
- Mineral Processing and Grinding
- Granular flow and fluidized beds
- Advanced Combustion Engine Technologies
- Vehicle emissions and performance
- Fluid Dynamics and Vibration Analysis
- Cyclone Separators and Fluid Dynamics
- Computational Fluid Dynamics and Aerodynamics
- Combustion and flame dynamics
- Biomimetic flight and propulsion mechanisms
- Wind Energy Research and Development
- Underwater Vehicles and Communication Systems
- Fluid Dynamics and Turbulent Flows
- Aerospace Engineering and Energy Systems
- Catalytic Processes in Materials Science
- Aerodynamics and Acoustics in Jet Flows
- Dermatology and Skin Diseases
- Maritime Transport Emissions and Efficiency
- Rocket and propulsion systems research
- Drilling and Well Engineering
- Soil Mechanics and Vehicle Dynamics
- Water Systems and Optimization
- Aerosol Filtration and Electrostatic Precipitation
- Minerals Flotation and Separation Techniques
University of Concepción
2012-2025
Allakos (United States)
2023-2024
Instituto de Neurociencia Biomédica
2023
Universidad Técnica del Norte
2022
Universidade da Coruña
2011-2021
Hospital Privado de Comunidad
2020
Offshore Renewable Energy Catapult
2019
Australian National University
2017
Hospital General Universitario Gregorio Marañón
2014
Universidade Politecnica
2011-2012
The highest vibration levels in large pump turbines are, general, originated the rotor stator interaction (RSI). This has specific characteristics that can be clearly observed frequency domain: harmonics of moving blade passing and a particular relationship among their amplitudes. It is valuable for design condition monitoring to count on these characteristics. A CFD model an appropriate tool determine force its However, it time consuming needs highly qualified human resources while usually...
To assess the quality of antifungal use, to propose a point score for this evaluation and estimate potential economic savings an stewardship programme. From December 2010 January 2011, we identified 100 adult inpatients receiving systemic antifungals. Antifungal use was evaluated by means predefined that considered indication, drug selection, dosage, adjustments after microbiology results, switching oral agent length treatment. Total prescriptions [in defined daily doses (DDDs) days therapy...
Gyratory crushers are fundamental machines in aggregate production and mineral processing. Discrete Element Method (DEM) simulations offer detailed insights into the performance of these serve as a powerful tool for their design analysis. However, computationally intensive due to large number particles involved need account particle breakage. This study aims investigate effect shape size distribution on DEM model gyratory crusher. The selected case corresponds primary crusher operating...
A Mach 2, hydrogen-air combustor with an unswept 10-deg ramp fuel injector was experimentally and numerically studied for a simulated flight number near 5. Numerical modeling performed using the Viscous Upwind Algorithm Complex Flow Analysis code, results were compared against experimental wall-pressure distributions, plume images, velocity measurements. The model matched distributions well case of fuel-off fuel-air mixing. For reacting case, pressure in upstream third duct. Downstream,...
Current trends in design of pump-turbines have led into higher rotor-stator interaction (RSI) loads over impeller-runner. These dynamic are special interest having produced catastrophic failures pump-turbines. Determining RSI characteristics facilitates the proposal actions that will prevent these failures. Pressure measurements all around perimeter impeller-runner appropriate to monitor and detect characteristics. Unfortunately most installed not manufactured with in-built pressure sensors...
Abstract Cano Limon is a prolific oilfield located in Colombia's s Arauca Department (Llanos Basin), with the bulk of oil produced from Eocene Mirador and Upper Cretaceous sands. Long tangent profiles this application often necessitate changes to casing design. As result, operators employ borehole enlargement while drilling on rotary steerable systems (RSS). However, challenges like excessive vibration bottomhole assembly (BHA) instability arise when bit/reamer cutting structures encounter...
The aim of the present paper is to provide state works in field hydrodynamics and computational simulations analyze biomimetic marine propulsors. Over last years, many researchers postulated that some fish movements are more efficient maneuverable than traditional rotary propellers, most relevant propulsors which mimic fishes shown work. Taking into account complexity cost experimental setups, numerical models offer an efficient, cheap, fast alternative tool Besides, information cannot be...
Spectral vibration analysis using the Fourier transform is most common technique for evaluating mechanical condition of machinery working in stationary regimen. However, operating transient modes, such as variable speed equipment, generates spectra with distinct frequency content at each time, and standard approach not directly applicable diagnostic. The "order tracking" a suitable tool analyzing machines. We have studied computed order tracking (COT), new procedure proposed solving...
The discrete element method (DEM) has been widely employed to model processes in different industries, such as mining, agriculture, pharmaceuticals, and food. One of the main lines research, which authors propose several approaches, is calibration parameters. Bulk (BCA) a common approach used that does not necessarily represent individual behavior each particle. On other hand, direct measurement (DMA) another some cases. This work presents comparison between DEM parameters with non-cohesive...
Abstract The aim of the present paper is to develop a computational fluid dynamics (CFD) analysis study combustion process in four-stroke marine diesel engine, Wartsila 6L 46. motivation comes from importance emissions engines global emissions, particularly for nitrogen oxides (NO x ) and sulfur (SO ). pressure temperature fields were obtained, as well exhaust gas composition. In order validate this work, numerical results satisfactory compared with experimental ones, which indicates that...
Abstract The present paper proposes a CFD model to study sulphur dioxide (SO 2 ) absorption in seawater. focus is on the treatment of marine diesel engine exhaust gas. Both seawater and distilled water were compared analyze effect alkalinity. results indicate that more appropriate than due its alkalinity, obtaining almost 100% cleaning efficiency for conditions analyzed. This SO reduction meets limits x emission control areas (SECA) when operating heavy fuel oil. These numerical simulations...
Comminution by gyratory crusher is the first stage in size reduction operation mineral processing. In copper industry, these machines are widely utilized, and their reliability has become a relevant aspect. To optimize design to improve availability of crushers, it necessary calculate power torque accurately. The discrete element method (DEM) been commonly used several mining applications powerful tool predict required machines. this paper, DEM model was applied perform comprehensive...
In order to reduce NOx emissions in internal combustion engines, the present work analyzes a measurement which consists of injecting ammonia directly into chamber. A commercial compression ignition engine fueled with hydrogen-diesel blend was studied numerically. It verified that flow rate shape injected, particularly rectangular, triangular, or parabolic, as well injection duration had an important influence on reduction. 11.4% improvement reduction, corresponding overall reduction 78.2%...
Vibrating screens are critical machines used for size classification in mineral processing. Their proper operation, including accurate vibration movement and slope angle, can provide the benefits of energy savings cost reductions screening process whole mining process. Dynamic models vibrating screen available literature do not simulate ore motion or its interaction with decks. The discrete element method (DEM) allows calculation dynamic ore. In this paper, two 2D three‐degrees‐of‐freedom a...
Three-dimensional cfd analysis to study the thrust and efficiency of a biologically-inspired marine propulsorAquatic animals, which are result many millions years evolutionary optimization, very quick, efficient, robust, versatile. Accordingly, mechanisms emulate movement animals have recently become popular. For efficient design propulsion system it is important analyze fluid flow in detail. CFD (Computational Fluid Dynamics) has powerful technique understand phenomena because gives...