Results 61 to 70 of about 445,081 (268)

Near optimal angular quadratures for polarised radiative transfer

open access: yes, 2020
In three-dimensional (3D) radiative transfer (RT) problems, the tensor product quadratures are generally not optimal in terms of the number of discrete ray directions needed for a given accuracy of the angular integration of the radiation field.
Javier Trujillo Bueno   +2 more
core   +1 more source

Simple universal bounds for Chebyshev-type quadratures [PDF]

open access: yes, 2010
A Chebyshev-type quadrature for a probability measure σ is a distribution which is uniform on n points and has the same first k moments as σ. We give an upper bound for the minimal n required to achieve a given degree k, for σ supported on an interval ...
Peled, Ron, Ron Peled
core   +1 more source

Comparative Study of Gas and Liquid Flow in Packed Beds Using Phase‐Contrast MRI

open access: yesChemie Ingenieur Technik, EarlyView.
This work presents applications of phase‐contrast magnetic resonance imaging (MRI) to investigate fluid flow fields and temperature in packed beds. Comparison of ethane (C2H6) gas flow with that of water flow is done at similar flow conditions. The temperature of water is also measured using MRI.
Maitreyi Sangal   +4 more
wiley   +1 more source

WSPLK: A systematic approach to the thermodynamic characterization of light and heavy Mexican crude oil

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract A streamlined characterization framework (WSPLK) is presented for modelling complex reservoir fluids using cubic equations of state. The key methodological contribution is the introduction of a single global parameter ε directly into Pedersen's boiling‐point correlation, restoring pure‐component calibration and eliminating the need for ...
Angélica Merlo‐Robredo   +3 more
wiley   +1 more source

Effectively Subsampled Quadratures for Least Squares Polynomial Approximations [PDF]

open access: yesSIAM/ASA Journal on Uncertainty Quantification, 2017
17 ...
Pranay Seshadri   +2 more
openaire   +4 more sources

Review of CFD modelling techniques for single‐phase and multiphase flow in static mixers

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
This review synthesizes computational fluid dynamics (CFD) approaches for static mixers, linking hydrodynamics to pressure drop, particle/droplet distributions, mixing metrics, and heat‐transfer performance to guide modelling choices and design decisions. Abstract Static mixers enable compact and low‐energy intensification.
Jussan Jaeger   +7 more
wiley   +1 more source

Coupled heat and mass transfer in reactive parallel‐plate flow: A perturbative Graetz model with modal symmetry and Arrhenius kinetics

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
A perturbative Graetz model describes coupled heat and mass transfer in reactive Couette–Poiseuille flow between parallel plates. Viscous dissipation and heat of reaction produce a small temperature rise, which enhances Arrhenius reaction rates and modestly accelerates axial species conversion in the small‐Brinkman‐number regime.
Leonardo Damián Soria Rodríguez   +1 more
wiley   +1 more source

Governance Drivers of Fossil Fuel Divestment: Evidence From Global Banks

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Climate change poses increasing transition risks for the banking sector, as financial institutions remain exposed to fossil fuel activities despite growing sustainability commitments. This study examines whether corporate governance influences banks' decisions to adopt fossil fuel divestment policies.
Rosella Carè   +3 more
wiley   +1 more source

Exact and Approximate Quadratures for Curvature Tensor Estimation

open access: yes, 2005
Accurate estimations of geometric properties of a surface from its discrete approximation are important for many computer graphics and geometric modeling applications.
Belyaev, A.   +2 more
core   +1 more source

Generalized Lie approach to integrability by quadratures

open access: yes, 2016
After a short review of the classical Lie theorem, a finite-dimensional Lie algebra of vector fields is considered and the most general conditions under which the integral curves of one of the fields can be obtained by quadratures in a prescribed way are
Falceto, F.   +3 more
core   +1 more source

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