Alexandre Presas

发表

Experimental analysis of the dynamic behavior of a rotating disk submerged in water

Alexandre Presas, David Valentín, Eduard Egusquiza, 2014 .

Sensor-Based Optimized Control of the Full Load Instability in Large Hydraulic Turbines

Alexandre Presas, David Valentín, Eduard Egusquiza, 2018, Sensors.

Transmission of High Frequency Vibrations in Rotating Systems. Application to Cavitation Detection in Hydraulic Turbines

Alexandre Presas, David Valentín, Eduard Egusquiza, 2018 .

Experimental-Numerical Design and Evaluation of a Vibration Bioreactor Using Piezoelectric Patches

Alexandre Presas, David Valentín, Eduard Egusquiza, 2019, Sensors.

Accurate Determination of the Frequency Response Function of Submerged and Confined Structures by Using PZT-Patches †

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017, Sensors.

Experimental Study of a Vibrating Disk Submerged in a Fluid-Filled Tank and Confined With a Nonrigid Cover

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017 .

Transposition of the mechanical behavior from model to prototype of Francis turbines

François Avellan, Alexandre Presas, David Valentín, 2020 .

Dynamic behaviour of pump-turbine runner: From disk to prototype runner

Alexandre Presas, Eduard Egusquiza, Carme Valero, 2013 .

Behavior of Francis turbines at part load. Field assessment in prototype: Effects on the hydraulic system

Alexandre Presas, David Valentín, Eduard Egusquiza, 2019 .

Detection of Hydraulic Phenomena in Francis Turbines with Different Sensors

Alexandre Presas, David Valentín, Eduard Egusquiza, 2019, Sensors.

Power swing generated in Francis turbines by part load and overload instabilities

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017 .

Synchronous condenser operation in Francis turbines: Effects in the runner stress and machine vibration

Alexandre Presas, David Valentín, Eduard Egusquiza, 2020 .

Influence of the added mass effect and boundary conditions on the dynamic response of submerged and confined structures

Alexandre Presas, David Valentín, Eduard Egusquiza, 2014 .

Analysis of the dynamic response of pump-turbine runners-Part I: Experiment

Alexandre Presas, Eduard Egusquiza, Carme Valero, 2012 .

A Review of PZT Patches Applications in Submerged Systems

Alexandre Presas, David Valentín, Yongyao Luo, 2018, Sensors.

Failure investigation of a Pelton turbine runner

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017 .

On the detection of natural frequencies and mode shapes of submerged rotating disk-like structures from the casing

Alexandre Presas, David Valentín, Eduard Egusquiza, 2015 .

Condition monitoring of a prototype turbine. Description of the system and main results

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017 .

Feasibility of Detecting Natural Frequencies of Hydraulic Turbines While in Operation, Using Strain Gauges

Alexandre Presas, David Valentín, Eduard Egusquiza, 2018, Sensors.

Overview of the experimental tests in prototype

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017 .

Detection and analysis of part load and full load instabilities in a real Francis turbine prototype

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017 .

Numerical Analysis of the Influence of Design Parameters on the Efficiency of an OWC Axial Impulse Turbine for Wave Energy Conversion

Alexandre Presas, Yongyao Luo, Zhengwei Wang, 2019 .

On the capability of structural-acoustical FSI simulations to predict natural frequencies of rotating disk-like structures submerged in a heavy fluid

Alexandre Presas, David Valentín, Eduard Egusquiza, 2016 .

Condition monitoring of pump-turbines. New challenges

Alexandre Presas, David Valentín, Eduard Egusquiza, 2015 .

Dynamic response of Pelton runners: Numerical and experimental analysis in prototypes

Alexandre Presas, David Valentín, Carme Valero, 2020 .

Feasibility of Using PZT Actuators to Study the Dynamic Behavior of a Rotating Disk due to Rotor-Stator Interaction

Alexandre Presas, David Valentín, Eduard Egusquiza, 2014, Sensors.

On the use of PZT-Patches as exciters in modal analysis: application to submerged structures

Alexandre Presas, David Valentín, Eduard Egusquiza, 2016 .

Influence of the rotation on the natural frequencies of a submerged-confined disk in water

Alexandre Presas, David Valentín, Eduard Egusquiza, 2015 .

Behavior of Francis turbines at part load. Field assessment in prototype: Effects on power swing

Alexandre Presas, David Valentín, Eduard Egusquiza, 2019, IOP Conference Series: Earth and Environmental Science.

Influence of the boundary conditions on the natural frequencies of a Francis turbine

Alexandre Presas, David Valentín, Eduard Egusquiza, 2016 .

Increasing the operating range and energy production in Francis turbines by an early detection of the overload instability

Alexandre Presas, Eduard Egusquiza, Carme Valero, 2021, Measurement.

On the use of neural networks for dynamic stress prediction in Francis turbines by means of stationary sensors

Alexandre Presas, Eduard Egusquiza, Carme Valero, 2021 .

Numerical study on the influence of acoustic natural frequencies on the dynamic behaviour of submerged and confined disk-like structures

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017 .

Extension of Operating Range in Pump-Turbines. Influence of Head and Load

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017 .

Fatigue life estimation of Francis turbines based on experimental strain measurements: Review of the actual data and future trends

Alexandre Presas, Yongyao Luo, Bao Guo, 2019, Renewable and Sustainable Energy Reviews.

Dynamic response of the MICA runner. Experiment and simulation

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017 .

Experimental study on the added mass and damping of a disk submerged in a partially fluid-filled tank with small radial confinement

Alexandre Presas, David Valentín, Eduard Egusquiza, 2014 .

Dynamic response of a rotating disk submerged and confined. Influence of the axial gap

Alexandre Presas, David Valentín, Eduard Egusquiza, 2016 .

Natural frequencies of rotating disk-like structures submerged viewed from the stationary frame

Alexandre Presas, David Valentín, Eduard Egusquiza, 2016 .

Feasibility to Detect Natural Frequencies of Hydraulic Turbines under Operation Using Strain Gauges

Alexandre Presas, David Valentín, Eduard Egusquiza, 2017 .