Search Results - numerical methods and algorithms

Development of algorithms for enhancing numerical simulations in CFD & HT: conjugate heat transfer, moving bodies, indoor air quality, and thermal energy storage

Authors: Vera i Fernández, Jordi

Contributors: University/Department: Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics

Thesis Advisors: Oliva Llena, Asensio, Pérez Segarra, Carlos David

Source: TDX (Tesis Doctorals en Xarxa)

Subject Terms: Computational Fluid Dynamics and Heat Transfer (CFD & HT), Immersed Boundary Method (IBM), Sliding Meshes, Moving Bodies, Indoor Air Quality, Infection Probability, Thermal Energy Storage (TES), Thermocline, Àrees temàtiques de la UPC::Enginyeria mecànica, Àrees temàtiques de la UPC::Energies, 621 - Enginyeria mecànica en general. Tecnologia nuclear. Electrotècnia. Maquinària, 620 - Assaig de materials. Material comercials. Economia de l'energia

File Description: application/pdf

Access URL: http://hdl.handle.net/10803/693918
https://dx.doi.org/10.5821/dissertation-2117-425645

ZEUS: Numerical methods to detect quasi-particles describing excitable media.

Authors: Gobeyn A Kabus D Tolkacheva EG et al.

Source: Chaos (Woodbury, N.Y.) [Chaos] 2025 Dec 01; Vol. 35 (12).

Publication Type: Journal Article

Journal Info: Publisher: American Institute of Physics Country of Publication: United States NLM ID: 100971574 Publication Model: Print Cited Medium: Internet ISSN: 1089-7682 (Electronic) Linking ISSN: 10541500 NLM ISO Abbreviation: Chaos Subsets: MEDLINE

MeSH Terms: Algorithms* , Models, Cardiovascular* , Action Potentials* , Heart Conduction System*/physiopathology , Nonlinear Dynamics*, Animals ; Rabbits ; Computer Simulation ; Tachycardia, Ventricular/physiopathology

Mathematical Models and Numerical Simulations Based on High Precision Multiscale Algorithms.

Authors: Shen, Guiping¹ (AUTHOR) Grady0602@163.com

Source: Procedia Computer Science. 2025, Vol. 261, p118-127. 10p.

Subject Terms: Multiscale modeling, Finite element method, Mathematical models, Computer simulation, Phenomenological theory (Physics), Spectral element method

Comparative Analysis for Evaluating Wind Energy Resources Using Intelligent Optimization Algorithms and Numerical Methods.

Authors: Alrashidi, Musaed¹ malrashidi@qu.edu.sa

Source: Computer Systems Science & Engineering. 2023, Vol. 47 Issue 1, p491-513. 23p.

Subject Terms: Wind power, Algorithms, Weibull distribution, Numerical analysis, Parameter estimation

Numerical modeling of electrical activity in cardiac tissue using implicit high-order algorithms combined with meshless methods.

Authors: Kaba, Sita EL Kihal, Chafik Askour, Omar et al.

Source: Biomedical Signal Processing & Control. Sep2025, Vol. 107, pN.PAG-N.PAG. 1p.

Subject Terms: Radial basis functions, Continuation methods, Interpolation, Algorithms

Numerical methods for the robust reconstruction of elasticity

Métodos numéricos para a reconstrução robusta da elasticidade

Authors: Henriques, Rafael Oliveira

Subject Terms: Elastografia coerência óptica, Equação de elasticidade linear, Método dos elementos finitos, Problema inverso, Redes neuronais, Finite element method, Inverse problem, Linear elasticity equation, Neuronal networks, Optical coherence elastography, Ciências exactas e naturais::Matemática

Availability: https://hdl.handle.net/10316/118251

Advanced finite element methods for metal forming and manufacturing process simulation: an application to friction stir welding analysis

Authors: Venghaus, Henning

Contributors: University/Department: Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental

Thesis Advisors: Chiumenti, Michele, Baiges Aznar, Joan, Juhre, Daniel

Source: TDX (Tesis Doctorals en Xarxa)

Subject Terms: Finite Element Methods, Metal Forming, Adaptive Formulation Refinement, Friction Stir Welding, Embedded Finite Element Methods, Àrees temàtiques de la UPC::Enginyeria civil, Àrees temàtiques de la UPC::Matemàtiques i estadística, 624 - Enginyeria civil i de la construcció en general, 66 - Enginyeria tecnologia i indústria química. Metal·lúrgia, 51 - Matemàtiques

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Access URL: http://hdl.handle.net/10803/696015
https://dx.doi.org/10.5821/dissertation-2117-448533

Modelling and numerical methods for identifying low-level adulteration in ground beef using near-infrared hyperspectral imaging (NIR-HSI).

Authors: Jia W Ferragina A Hamill R et al.

Source: Talanta [Talanta] 2024 Aug 15; Vol. 276, pp. 126199. Date of Electronic Publication: 2024 May 03.

Publication Type: Journal Article

Journal Info: Publisher: Elsevier Country of Publication: Netherlands NLM ID: 2984816R Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-3573 (Electronic) Linking ISSN: 00399140 NLM ISO Abbreviation: Talanta Subsets: MEDLINE

MeSH Terms: Food Contamination*/analysis , Hyperspectral Imaging*/methods , Spectroscopy, Near-Infrared*/methods , Red Meat*/analysis, Cattle ; Animals ; Neural Networks, Computer ; Algorithms ; Swine ; Liver/chemistry

Algorithms for the fractional calculus: A selection of numerical methods: Algorithms for the fractional calculus: a selection of numerical methods

Authors: Yury Luchko Kai Diethelm Alan D. Freed et al.

Source: Computer Methods in Applied Mechanics and Engineering. 194:743-773

Subject Terms: Caputo differential equations, Mittag-Leffler function, numerical algorithms, Riemann–Liouville integrals, Nonlinear ordinary differential equations and systems, Numerical methods for initial value problems involving ordinary differential equations, Numerical quadrature and cubature formulas, 01 natural sciences, Numerical differentiation, General theory of numerical methods in complex analysis (potential theory, etc.), Caputo derivatives, Fractional derivatives and integrals, 0103 physical sciences, Riemann-Liouville integrals, 0101 mathematics

File Description: application/xml; YES

Access URL: https://ntrs.nasa.gov/api/citations/20030112277/downloads/20030112277.pdf
https://core.ac.uk/display/364040
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20030112277.pdf
https://www.sciencedirect.com/science/article/pii/S0045782504002981
https://repository.exst.jaxa.jp/dspace/handle/a-is/508484
https://ui.adsabs.harvard.edu/abs/2005CMAME.194..743D/abstract

The Gross-Pitaevskii Equation and Eigenvector Nonlinearities: Numerical Methods and Algorithms.

Authors: Henning, Patrick Jarlebring, Elias

Source: SIAM Review. 2025, Vol. 67 Issue 2, p256-317. 62p.

Subject Terms: *ALGORITHMS, *MATHEMATICAL optimization, GROSS-Pitaevskii equations, NONLINEAR Schrodinger equation, BOSE-Einstein condensation, QUANTUM theory, NUMERICAL analysis

Combined ANFIS and numerical methods to reveal the mass transfer mechanism of ultrasound-enhanced extraction of proteins from millet.

Authors: Ma YR Xu YQ Guo W et al.

Source: Ultrasonics sonochemistry [Ultrason Sonochem] 2024 Dec; Vol. 111, pp. 107153. Date of Electronic Publication: 2024 Nov 12.

Publication Type: Journal Article

Journal Info: Publisher: Elsevier Science Country of Publication: Netherlands NLM ID: 9433356 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-2828 (Electronic) Linking ISSN: 13504177 NLM ISO Abbreviation: Ultrason Sonochem Subsets: MEDLINE

MeSH Terms: Plant Proteins*/chemistry , Plant Proteins*/isolation & purification , Millets*/chemistry, Chemical Fractionation/methods ; Ultrasonic Waves ; Fuzzy Logic ; Hydrogen-Ion Concentration ; Algorithms

Modelling and numerical simulation of combustion and multi-phase flows using finite volume methods on unstructured meshes

Authors: Muela Castro, Jordi

Contributors: University/Department: Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics

Thesis Advisors: Oliva, Asensio, Pérez Segarra, Carlos David

Source: TDX (Tesis Doctorals en Xarxa)

Subject Terms: Àrees temàtiques de la UPC::Física

File Description: application/pdf

Access URL: http://hdl.handle.net/10803/565423
https://dx.doi.org/10.5821/dissertation-2117-117638

Numerical analysis of cyclic loaded shape memory allows with an adapted algorithm for ansys

Authors: Hilário, Jean César Andrade, Carlos A.R. Braz-César, Manuel et al.

Contributors: Hilário, Jean César Andrade, Carlos A.R. Braz-César, Manuel et al.

Subject Terms: Shape memory alloys, Superelasticity, Numerical methods, Dynamic response

File Description: application/pdf

Relation: 978-88-9385-155-8

Availability: http://hdl.handle.net/10198/19592

High Order Numerical Methods for Hyperbolic Balance Laws: Well-Balanced Discontinuous Galerkin Methods and Adjoint-Based Inverse Algorithms

Authors: Britton, Jolene

Subject Terms: Applied mathematics, Adjoint Methods, Discontinuous Galerkin, Hyperbolic Balance Laws, Inverse Problems, Well-balanced Methods

File Description: application/pdf

Access URL: https://escholarship.org/uc/item/0f0511p4
https://escholarship.org/content/qt0f0511p4/qt0f0511p4.pdf

Time-domain numerical methods in room acoustics simulations

Authors: Spa Carvajal, Carlos

Contributors: University/Department: Universitat Pompeu Fabra. Departament de Tecnologies de la Informació i les Comunicacions

Thesis Advisors: López, Vicente, Garriga Torres, Adam

Source: TDX (Tesis Doctorals en Xarxa)

Subject Terms: hybrid formulation, PSO2, PSO1, FDO1, FDO2, locallyreacting, impedance, afterglow, volumetric sources, transparent source, sincfunction, Gaussian pulse, unit impulse signal, Dirac delta source, source generation, numerical speed of sound, temporal sampling, spatial sampling, Courant, stability number, dispersion error, centered mesh, staggered mesh, MacCormack, parametric algorithm, Wavebased, PseudoSpectral, enclosure, particle velocity, acoustic pressure, acoustic features, impulse response, Room acoustics, reflection coefficient, Perfectly Matched Layers.

File Description: application/pdf

Access URL: http://www.tdx.cat/TDX-0225110-135230
http://hdl.handle.net/10803/7565

Improved prediction and flagging of extreme random effects for non-Gaussian outcomes using weighted methods.

Authors: Neuhaus, John Mcculloch, Chuck Boylan, Ross

Source: Biometrics. 81(3)

Subject Terms: Humans, Asthma, Data Interpretation, Statistical, Models, Statistical, Normal Distribution, Biometry, Algorithms, Computer Simulation, Outcome Assessment, Health Care

File Description: application/pdf

Access URL: https://escholarship.org/uc/item/1c46w51x
https://escholarship.org/content/qt1c46w51x/qt1c46w51x.pdf

Comparative evaluation of optimal Weibull parameters for wind power predictions using numerical and metaheuristic optimization methods for different Indian terrains.

Authors: Patidar H Shende V Baredar P et al.

Source: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2023 Mar; Vol. 30 (11), pp. 30874-30891. Date of Electronic Publication: 2022 Nov 28.

Publication Type: Journal Article

Journal Info: Publisher: Springer Country of Publication: Germany NLM ID: 9441769 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1614-7499 (Electronic) Linking ISSN: 09441344 NLM ISO Abbreviation: Environ Sci Pollut Res Int Subsets: MEDLINE

MeSH Terms: Wind* , Algorithms*, India

Unfittted finite element methods for explicit boundary representations

Authors: Martorell Pol, Pere Antoni

Contributors: University/Department: Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins, Canals i Ports de Barcelona

Thesis Advisors: Badia, Santiago, Verdugo Rojano, Francesc

Source: TDX (Tesis Doctorals en Xarxa)

Subject Terms: Àrees temàtiques de la UPC::Matemàtiques i estadística

File Description: application/pdf

Access URL: http://hdl.handle.net/10803/690625
https://dx.doi.org/10.5821/dissertation-2117-406723

Graphical simulation of numerical algorithms : an approach based on code instrumentation and Java technologies

Authors: Balsa, Carlos Alves, Luís M. Pereira, Maria João et al.

Contributors: Balsa, Carlos Alves, Luís M. Pereira, Maria João et al.

Subject Terms: E-Learning tool, Numerical methods, Code instrumentation, Octave, Inspector functions

File Description: application/pdf

Availability: http://hdl.handle.net/10198/6998

Numerical Behavior of Mixed Precision Iterative Refinement Using the BiCGSTAB Method

Authors: Takeshi Fukaya Takeshi Iwashita Yingqi Zhao

Source: Journal of Information Processing. 2023, 31:860