Publications related to Turbine mode start-up simulation of a variable speed Francis pump-turbine prototype - Part II: 3-D unsteady CFD and FEM

Related publications (21)

Design of a Megawatt-Scale IGCT-Based Medium-Voltage Direct Current Transformer

Drazen Dujic, Nikolina Djekanovic, Rui Wang

This paper presents a robust design of a megawattscale medium-voltage (MV) direct current transformer (DCT) that features a bidirectional LLC resonant converter topology. This topology harnesses the inherent ability to control power flow seamlessly between ...

2025

A molecularly engineered large-area nanoporous atomically thin graphene membrane for ion separation

Kumar Varoon Agrawal

Atomically thin graphene membranes with sub-1-nm pores show promise for ion/molecular separation, osmotic energy generation, and energy storage. Narrowing the pore size distribution and controlling the surface charge are essential to achieve these applicat ...

Springer Science and Business Media LLC2025

Transient Stability Analysis of Power-Synchronized PLL-Less Grid-Following Inverters

Alireza Karimi

In the realm of modern power systems, grid-connected inverters are essential for integrating renewable energy resources. While grid-following inverters (GFLIs) currently dominate the market, grid-forming inverters (GFMIs) are pivotal for technology future ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2024

EXERGY EFFICIENCY IS A KEY PERFORMANCE INDICATOR TO RANK ADVANCED ACTIVE ENERGY TECHNOLOGIES AT THE DISTRICT LEVEL

Daniel Favrat

Supplying electricity, heat and cold is an essential part in the development of more sustainable city districts. Previous papers have illustrated the interest of using the exergy efficiency concept to decompose the problem and rank the technology combinati ...

ECOS 20242024

Self-exploring automated experiments for discovery, optimization, and control of unsteady vortex-dominated flow phenomena

Karen Ann J Mulleners

Typical unsteady vortex-dominated flows like those involved in bio-inspired propulsion, airfoil separation, bluff body wakes, and vortex-induced vibrations can be prohibitively expensive to simulate and impossible to measure comprehensively. These examples ...

American Physical Society (APS)2024

Production of carbon nanomaterials and syngas from biogas reforming and decomposition on one-pot mesoporous nickel alumina catalysts

Muhammad Awais Naeem

Biogas, a renewable energy source, is primarily composed of CH4 and CO2. It is a promising alternative to fossil fuels and can be used directly for electricity production as well as heat generation via combustion. Concerns about climate change and a greate ...

2023

Measurement of the Diffusion and Partition Coefficients of 6-Methyl-5-hepten-2-one in Clothing

Meixia Zhang

Deep understanding of the chemical reaction and physical transport characteristics of 6-methyl-5-hepten-2-one (6-MHO) in different phases (e.g., skin, clothing) is important for modeling the indoor squalene/ozone reaction. In this study, we make the first ...

2023

Harmonic Power-Flow Study of Hybrid AC/DC Grids with Converter-Interfaced Distributed Energy Resources

Mario Paolone, Andreas Martin Kettner, Yihui Zuo, Johanna Kristin Maria Becker

As the share of Converter-Interfaced Distributed Energy Resources (CIDERs) in power distribution systems increases, hybrid AC/DC distribution systems are drawing more interest. Indeed, CIDERs usually rely on DC power and hybrid AC/DC grids with few Network ...

IEEE2023

Photoelectrochemical CO2 Reduction at a Direct CuInGaS2/Electrolyte Junction

Michael Graetzel, Kevin Sivula, Jun Ho Yum, Nestor Guijarro Carratala, Dan Ren, Yongpeng Liu, Meng Xia, Simon Nussbaum

Photoelectrochemical (PEC) CO2 reduction has received considerable attention given the inherent sustainability and simplicity of directly converting solar energy into carbonbased chemical fuels. However, complex photocathode architectures with protecting l ...

AMER CHEMICAL SOC2023

Machine Learning for Optical Motion Capture-Driven Musculoskeletal Modelling from Inertial Motion Capture Data

Rahul Sharma

Marker-based Optical Motion Capture (OMC) systems and associated musculoskeletal (MSK) modelling predictions offer non-invasively obtainable insights into muscle and joint loading at an in vivo level, aiding clinical decision-making. However, an OMC system ...

MDPI2023

Precision Surface Microtopography Regulates Cell Fate Via Changes To Actomyosin Contractility And Nuclear Architecture

Jürgen Brugger

MARY ANN LIEBERT, INC2022

Climate Change Impact Assessment for Future Wind and Solar Energy Installations in India

Michael Lehning, Yasmine Zakari

Solar and wind assets are climate-dependent and changes in climate will result in variations in their generation and intermittency. Developers of solar and wind parks in India have observed changes in climate conditions and variability in solar irradiation ...

FRONTIERS MEDIA SA2022

Impact of the COVID-19 pandemic on the energy performance of residential neighborhoods and their occupancy behavior

Jean-Louis Scartezzini, Roberto Castello, Kavan Javanroodi

Several contrasting effects are reported in the existing literature concerning the impact assessment of the COVID19 outbreak on the use of energy in buildings. Following an in-depth literature review, we here propose a GISbased approach, based on pre-pande ...

ELSEVIER2022

Realizing High-Efficiency Perovskite Solar Cells by Passivating Triple-Cation Perovskite Films

Dan Ren, Hongwei Zhu

The photovoltaic performance of perovskite solar cells (PSCs) prepared by the low-temperature solution method has made rapid progress. However, the surface of the film is prone to defects that trap photogenerated charges, resulting in nonradiative recombin ...

WILEY-V C H VERLAG GMBH2022

An open-access database and analysis tool for perovskite solar cells based on the FAIR data principles

Ulf Anders Hagfeldt, Bowen Yang, Barbara Alexandra Primera Darwich

Making large datasets findable, accessible, interoperable and reusable could accelerate technology development. Now, Jacobsson et al. present an approach to build an open-access database and analysis tool for perovskite solar cells. ...

NATURE PORTFOLIO2022

Emergence of active turbulence in microswimmer suspensions due to active hydrodynamic stress and volume exclusion

Kai Qi

Microswimmers are ubiquitous in nature and present highly-dynamic collective motion. This study presents computational simulations of spheroidal model-microswimmers confined between two walls, revealing two collective dynamic states, giant motile clusters ...

2022

A Self-Powered and Battery-Free Vibrational Energy to Time Converter for Wireless Vibration Monitoring

Catherine Dehollain

Wireless sensor nodes (WSNs) are the fundamental part of an Internet of Things (IoT) system for detecting and transmitting data to a master node for processing. Several research studies reveal that one of the disadvantages of conventional, battery-powered ...

MDPI2021

Comparison of Wide-Band-Gap Technologies for Soft-Switching Losses at High Frequencies (vol 35, pg 12595, 2020)

Elison de Nazareth Matioli, Armin Jafari, Mohammad Samizadeh Nikooytabalvandani, Palliyage Srilak Nirmana Perera, Reza Soleiman Zadeh Ardebili, Halil Kerim Yildirim

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2021

The Imprint of Primary Production on High-Frequency Profiles of Lake Optical Properties

Alfred Johny Wüest, Camille Roland Marie Minaudo, Sébastien Manuel Lavanchy

Water inherent optical properties (IOPs) contain integrative information on the optical constituents of surface waters. In lakes, IOP measurements have not been traditionally collected. This study describes how high-frequency IOP profiles can be used to do ...

AMER CHEMICAL SOC2021

Cable-Driven Robotic Interface for Lower Limb Neuromechanics Identification

Mohamed Bouri

This paper presents a versatile cable-driven robotic interface to investigate the single-joint joint neuromechanics of the hip, knee and ankle in the sagittal plane. This endpoint-based interface offers highly dynamic interaction and accurate position cont ...

2021