About the Journal
RIMNI - An International Journal of Numerical Methods for Calculation and Design in Engineering (Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería) is a peer-reviewed Open Access journal, founded in 1985. RIMNI contributes to the spread of theoretical advances and practical applications of numerical methods in engineering and other applied sciences. RIMNI publishes articles written in Spanish and English. The journal's scope includes Computational and Numerical Models of Engineering Problems, Development and Application of Numerical Methods, Advances in Software, Computer Design Innovations, Educational Aspects of Numerical Methods, Soft Computing, Machine Learning, Artificial Intelligence, etc. RIMNI is an essential source of information for scientists and engineers in numerical methods theory and applications. RIMNI contributes to the interdisciplinary exchange and thus shortens the distance between theoretical developments and practical applications. This journal is published quarterly by Tech Science Press.
Indexing and Abstracting
SCIE (Web of Science): 2023 Impact Factor 0.3, JCR Q4; Scopus: 2023 CiteScore 0.7; DOAJ; Wikidata; Crossref; Title DOI; ROAD; ZDB; EZB; OpenAlex; SuDoc; FATCAT; The Keepers, etc.
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Open Access
ARTICLE
Estimation of peak flow in flood-producing rivers using numerical simulation, geospatial information and evolutionary algorithms
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.3, pp. 1-24, 2024, DOI:10.23967/j.rimni.2024.08.002 - 27 August 2024
Abstract Floods produce enormous human and material losses every year. Evaluating their extent and severity, and especially simulating possible future scenarios can improve the response, mitigation and prevention oftheeffectsofthisphenomenon.Thispaper presentsa methodology toreproduce theextentoffloods producedbychannel overflows and recorded by satellite images, identifying the maximum discharge that produced it by means of the numerical solution of the 2D shallow water equations and Differential Evolution. The objective is to minimize the difference between the extent of the flooded area recorded in the satellite images, and that obtained in the simulation by adjusting the maximum value of the flow curve More >
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Open Access
ARTICLE
Aeroelasticity analysis of folding wing with structural nonlinearity using modified DLM
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.3, pp. 1-15, 2024, DOI:10.23967/j.rimni.2024.06.004 - 12 July 2024
Abstract The
structural
nonlinear
aeroelastic
analysis
of
folding
wings
is
conducted
by
integrating
the
modified
Doublet
Lattice
Method
in
this
paper.
Firstly,
a
modified
Doublet
Lattice
Method
is
investigated
to
relax
the
aspect
ratio
limitation
of
aerodynamic
elements,
and
its
correctness
is
verified
through
numerical
examples.
Secondly,
the
rational
function
approximation
method
is
discussed,
and
the
modified
Doublet
Lattice
Method
is
approximated
using
the
minimum
state
method
to
obtain
the
unsteady
aerodynamic
forces
in
the
time
domain.
Finally,
the
aeroelastic
characteristics
of
a
folding
wing
with
free-play
and
friction
nonlinearity
are
studied
by
integrating
time-domain
unsteady More >
-
Open Access
ARTICLE
Estimation of peak flow in flood-producing rivers using numerical simulation, geospatial information and evolutionary algorithms
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.3, pp. 1-24, 2024, DOI:10.23967/j.rimni.2024.08.002
Abstract Floods produce enormous human and material losses every year. Evaluating their extent and severity, and especially simulating possible future scenarios can improve the response, mitigation and prevention oftheeffectsofthisphenomenon.Thispaper presentsa methodology toreproduce theextentoffloods producedbychannel overflows and recorded by satellite images, identifying the maximum discharge that produced it by means of the numerical solution of the 2D shallow water equations and Differential Evolution. The objective is to minimize the difference between the extent of the flooded area recorded in the satellite images, and that obtained in the simulation by adjusting the maximum value of the flow curve More >
-
Open Access
ARTICLE
Aeroelasticity analysis of folding wing with structural nonlinearity using modified DLM
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.3, pp. 1-15, 2024, DOI:10.23967/j.rimni.2024.06.004
Abstract The
structural
nonlinear
aeroelastic
analysis
of
folding
wings
is
conducted
by
integrating
the
modified
Doublet
Lattice
Method
in
this
paper.
Firstly,
a
modified
Doublet
Lattice
Method
is
investigated
to
relax
the
aspect
ratio
limitation
of
aerodynamic
elements,
and
its
correctness
is
verified
through
numerical
examples.
Secondly,
the
rational
function
approximation
method
is
discussed,
and
the
modified
Doublet
Lattice
Method
is
approximated
using
the
minimum
state
method
to
obtain
the
unsteady
aerodynamic
forces
in
the
time
domain.
Finally,
the
aeroelastic
characteristics
of
a
folding
wing
with
free-play
and
friction
nonlinearity
are
studied
by
integrating
time-domain
unsteady More >
-
Open Access
ARTICLE
Design and structural analysis for a camber-morphing wing with deformable truss
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.2, pp. 1-11, 2024, DOI:10.23967/j.rimni.2024.03.004
Abstract A camber-morphing wing based on a deformable truss is proposed in this paper. And then the structural analysis of the proposed camber-morphing wing is achieved. Compared with the existing concept of camber-morphing wings, the deformation mode of this wing is easier to manufacture and implement in engineering. Due to the fact that the wing is driven by multiple motors, it has the characteristic of multiple degrees of freedom in camber-morphing, which can achieve various deformation controls. Establishing corresponding finite element models, the deformation ability under different driving conditions is simulated. The results indicate that compared More >
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Open Access
ARTICLE
Prediction of EV charging behavior using BOA-based deep residual attention network
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.2, pp. 1-9, 2024, DOI:10.23967/j.rimni.2024.02.002
Abstract In smart city applications, electric vehicles (EVs) are rapidly gaining popularity due to their ability to help cut down on carbon emissions. Numerous environmental conditions, including terrain, traffic, driving style, temperature, and so on, affect the amount of energy an EV needs to operate. However, the burden on power grid infrastructure from widespread EV deployment is one of the biggest obstacles. Smart scheduling algorithms can be used to handle the rising public charging demand. Scheduling algorithms can be improved using data-driven tools and procedures to study EV charging behaviour. Predictions of behaviour, including temperature, departure… More >
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Open Access
ARTICLE
Research on early fault detection method for a new distribution system based on automatic arc power
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.2, pp. 1-10, 2024, DOI:10.23967/j.rimni.2024.04.003
Abstract The integration of a large amount of renewable energy sources into the new distribution system has significantly altered its fault characteristics, resulting in variable operation modes and limited short-circuit currents. Hence, early arc faults can serve as indicators of impending system short-circuits, and prevent the difficulty of tripping the new distribution system by effectively detecting them in advance. A quantitative analytical model for the early fault current and temperature is developed, and a theoretical analysis reveals the challenges of achieving reliable detection based solely on either current or temperature. A novel early fault detection method More >
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Open Access
ARTICLE
Numerical analysis of thermal differential distribution in Bobbin tool friction stir welding of 7075-AZ31B dissimilar alloy
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.2, pp. 1-8, 2024, DOI:10.23967/j.rimni.2024.05.004
Abstract The theoretical model of bobbin tool friction stir welding (BT-FSW) structure and dynamic process is established. Because of the great differences in properties of different materials, the mathematical relationship between material stress and deformation will be expressed based on 3D transient heat conduction equation and J-C constitutive model. The BT-FSW process of 7075 and AZ31B was analyzed by finite element method, and the field distribution, thermal cycle curve and stress distribution characteristics of different welding areas of the welded material were simulated. To predict and control the non-equilibrium distribution of welding temperature and stress field,… More >
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Open Access
ARTICLE
Time-resolved subcycle and intercycle interference influenced momentum shift in nonadiabatic tunnelling ionization
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.2, pp. 1-5, 2024, DOI:10.23967/j.rimni.2024.05.015
Abstract Momentum shift is an important sign of nonadiabatic tunnelling ionization process, to investigate the mechanism of momentum shift, we use the strong-field approximation theory to track the formation of ionization momentum spectra of hydrogen atom under the action of different laser pulses in time domain. By observing the ionization momentum spectra of different structures with time, we find that the momentum shift is formed by the continuous interference and evolution of ionization signals over time. Meanwhile, we further analyze how subcycle and intercycle interference influencing the formation of momentum shift. Before the duration is long More >
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Open Access
ARTICLE
Study on heat transfer characteristics of pulsating heat pipe heat exchanger with asymmetric structure
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.2, pp. 1-7, 2024, DOI:10.23967/j.rimni.2024.05.005
Abstract The Pulsating Heat Pipe (PHP), lauded for its efficacy in heat transfer, is distinguished by its uncomplicated architecture, economical production, diminutive form, and robust adaptability to environmental conditions. This study delineates the design of an asymmetric PHP heat transfer apparatus, achieved through the alteration of select conduit lengths within the comprehensive circulation system. The thermal transfer efficacy of this apparatus was empirically scrutinized under dual dissipation modalities: natural and forced convection. It was observed that the asymmetric PHP, when devoid of oscillatory activity, maintained a heat source temperature of 25∘C, whereas the temperature escalated to… More >
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Open Access
ARTICLE
Characterisation of mechanical behaviour of fibre reinforced thermoplastic composites subjected to off-axis compressive loading
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.39, No.1, pp. 1-9, 2023, DOI:10.23967/j.rimni.2023.02.001
Abstract This paper presents an experimental and numerical investigation on the mechanisms of damage onset and evolution in unidirectional carbon fibre reinforced thermoplastic (CFRTP) composites subjected to off-axis compressive loadings. A test fixture was designed to prevent buckling, splitting and end collapsing of specimens during test. A series of compression tests were conducted with specimens of various off-axis angles. Different failure mechanisms and nonlinear stress-strain responses were observed and studied. The fracture angles of the tested specimens were evaluated and analysed according to Puck’s theory. The off-axis compression failure envelope based on LaRC05 and Hashin criteria More >
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Open Access
ARTICLE
Application of the Discrete Elements Method for the simulation of a beam-column connection based on a self-centering system
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.39, No.2, pp. 1-9, 2023, DOI:10.23967/j.rimni.2023.06.005
Abstract At present, the beam-column connection system through a self-centering post-tensioned connection is currently an alternative to improve the seismic behavior in reinforced concrete buildings; by allowing its elements to have a linear behavior (no damage) in the face of displacements produced by seismic actions. This paper deals with the numerical modeling of the seismic behavior for a self-centering connection based on the Discrete Element Method (MED) is presented, with the aim of validating the hysterical response of the numerical model with an experimental test of the literature. The results demonstrated the horizontal distortions in the… More >
Copyright © 2024 The Author(s). Published by Tech Science Press.
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