Results 21 to 30 of about 2,110,233 (290)
Modeling Long-Term Electricity Generation Planning to Reduce Carbon Dioxide Emissions in Nigeria
Energies, 2021 The most recent assessments conducted by the International Energy Agency indicate that natural gas accounts for the majority of Nigeria’s fossil fuel-derived electricity generation, with crude oil serving mostly as a backup source.
Juyoul Kim +5 more
doaj +1 more source
A Numerical Comparison of the Combustion of Biodiesel Blend and Pure Diesel in a Single Cylinder Diesel Engine [PDF]
E3S Web of ConferencesThis study investigates numerically the effects of biodiesel blend on engine performance and emissions. The tested engine worked at a fixed speed and with predefined conditions. The tested blends were pure diesel and pure biodiesel blends.
Gassoumi Mehrez +3 more
doaj +1 more source
Modeling Dynamical Dark Energy
, 2003 Cosmological models with different types of Dark Energy are becoming viable alternatives for standard models with the cosmological constant. Yet, such models are more difficult to analyze and to simulate.
A. Klypin +4 more
core +2 more sources
Reduced finite element square techniques (RFE2): towards industrial multiscale fe software [PDF]
, 2019 Reduced order modeling techniques proposed by the authors are assessed for an industrial case study of a 3D reinforced composite laminate. Essentially, the main dominant strain micro-structural modes are obtained through standard reduced order modeling ...
Huespe, Alfredo Edmundo +3 more
core +2 more sources
NULL ENERGY CONDITION AND DARK ENERGY MODELS [PDF]
Modern Physics Letters A, 2008 Null Energy Condition (NEC) requires the equation of state (EoS) of the universe wu satisfy wu ≥ -1, which implies, for instance in a universe with matter and dark energy dominating wu = w m Ω m + w de Ω de = w de Ω de ≥ -1. In this paper we study constraints on the dark energy models from the requirement of the NEC.
Qiu, Taotao, Cai, Yi-Fu, Zhang, Xin-Min
openaire +2 more sources
THEORETICAL MODELS OF DARK ENERGY [PDF]
International Journal of Modern Physics D, 2012 Mounting observational data confirm that about 73% of the energy density consists of dark energy which is responsible for the current accelerated expansion of the Universe. We present observational evidences and dark energy projects. We then review various theoretical ideas that have been proposed to explain the origin of dark energy; they contain the ...
Yoo, Jaewon, Watanabe, Yuki
openaire +3 more sources
A Digital Twin of Hot Pumping Waxy Oil Through a Main Pipeline
EnergiesThis article presents a digital twin of hot pumping waxy oil through a main pipeline. Digital copies of the original object data were identified through sensor measurements from SCADA and ECMAS, forming the basis of the SmartTranPro 1.7.1 Software.
Uzak Zhapbasbayev +3 more
doaj +1 more source
Experimental analysis of the effect of pitch angle on the performance of a Darrieus vertical-axis wind turbine [PDF]
E3S Web of ConferencesThe demand for sustainable energy solutions has driven increased interest in vertical-axis wind turbines (VAWTs), which offer several advantages over horizontal-axis devices.
Toumi Oumayma +2 more
doaj +1 more source
Energies, 2023 The roasting process of Gari (Gelatinized cassava mash), a shelf-stable cassava product, is energy-intensive. Due to a lack of information on thermal characteristics and scarcity/rising energy costs, heat and mass transfer calculations are essential to ...
Mwewa Chikonkolo Mwape +5 more
doaj +1 more source
Superconducting Bearing Design for Outer Rotor Flywheel Using Lumped Parameter Techniques [PDF]
, 2014 This paper describes the application of lumped parameter modeling techniques to designing high temperature superconducting bearings for outer-rotor flywheel energy storage systems.
Chen, D, Longoria, R. G. +2 more
core +1 more source