Results 71 to 80 of about 198 (145)

Heat transfer coefficient for flow boiling in an annular mini gap

open access: yesEPJ Web of Conferences, 2016
The aim of this paper was to present the concept of mathematical models of heat transfer in flow boiling in an annular mini gap between the metal pipe with enhanced exterior surface and the external glass pipe.
Hożejowska Sylwia   +2 more
doaj   +1 more source

Trefftz spectral method for elliptic equations of general type

open access: yesComputer Assisted Methods in Engineering and Science, 2023
A new numerical method for 2D linear elliptic partial differential equations in an arbitrary geometry is presented. The special feature of the method presented is that the trial functions, which are used to approximate a solution, satisfy the PDE only ...
Sergiy Reutskiy, Brunello Tirozzi
doaj  

A Cyber-Physical Data Collection System Integrating Remote Sensing and Wireless Sensor Networks for Coffee Leaf Rust Diagnosis. [PDF]

open access: yesSensors (Basel), 2021
Velásquez D   +8 more
europepmc   +1 more source

Solving singular convection–diffusion equation by exponentially-fitted trial functions and adjoint Trefftz test functions

open access: yesJournal of King Saud University - Science, 2018
AbstractThe paper develops a weak-form integral equation method (WFIEM) for solving the singularly perturbed convection–diffusion equation, which is too ill-posed to find the singular solution using conventional methods. We use Green’s second identity to generate integral equation, which includes a source term and boundary functions on the space-time ...
openaire   +1 more source

Stability of two-dimensional potential flows using bicomplex numbers. [PDF]

open access: yesProc Math Phys Eng Sci, 2022
Kleine VG, Hanifi A, Henningson DS.
europepmc   +1 more source

Domain optimisation using Trefftz functions – application to free boundaries

open access: yesComputer Assisted Methods in Engineering and Science, 2023
Trefftz approximations are known to require very few degrees of freedom to give an order of magnitude of the solution. In this paper, we show that it is possible to take advantage of this situation in two ways: (i) we show that it is also possible to ...
Mohamed Bouberbachene   +2 more
doaj  

Arbitrary order Trefftz-like basis functions on polygonal meshes and realization in BEM-based FEM

open access: yesComputers & Mathematics with Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

The application of the Beck`s method combined with the FEM and Trefftz functions to determine the heat transfer coefficient in minichannel

open access: yesJournal of Theoretical and Applied Mechanics, 2017
The aim of this study is to determine the heat transfer coefficient between the heated surface and the boiling fluid flowing in a minichannel on the basis of experimental data. The calculation model is based on Beck’s method coupled with the FEM and Trefftz functions.
openaire   +2 more sources

Thin plate bending analysis using an indirect Trefftz collocation method

open access: yesComputer Assisted Methods in Engineering and Science, 2023
In this work, the application of an indirect Trefftz collocation method to the analysis of bending of thin plates (Kirchhoff's theory) is described. The deflection field approximation is obtained with the use of a set of functions satisfying a priori ...
Carlos M. Tiago   +2 more
doaj  

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