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A meshless solution of the compressible viscous flow in axisymmetric tubes with varying cross-sectionsRana, Khush Bakhat ...The meshless Diffuse Approximate Method (DAM) is for the first time formulated and applied to simulate the compressible Newtonian flow of an ideal gas in an axisymmetric tube with varying ... cross-sections. The problem is structured by coupled partial differential equations for conservation of mass, momentum and energy, and the equation of state closure. These equations are solved in primitive variables and strong form. DAM is formulated on irregular node arrangement by using the second and third-order polynomial shape functions and Gaussian weights, leading to weighted least squares approximation on overlapping local subdomains. Pressure-velocity coupling is performed by the Pressure Implicit with Splitting of Operators (PISO) scheme. The solution of the represented novel application of DAM is verified by matching the meshless results with the fine-mesh finite-volume method results. The characteristics of meshless DAM for this kind of problem are systematically assessed by a detailed investigation of the varying node density, shape function order, Gaussian weight's shape, and the number of nodes in a local subdomain. The sensitivity study of DAM parameters shows that for the tested problems, the most suitable values of the Gaussian weight function and the number of nodes in a local subdomain are 5.0 and 13, respectively. Third-order convergence rate with better results is observed while using third-order polynomial shape functions.Source: Engineering analysis with boundary elements. - ISSN 0955-7997 (Vol. 143, Oct. 2022, str. 340-352)Type of material - article, component part ; adult, seriousPublish date - 2022Language - englishCOBISS.SI-ID - 114950915
source: Engineering analysis with boundary elements. - ISSN 0955-7997 (Vol. 143, Oct. 2022, str. 340-352)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Rana, Khush Bakhat | 51900 |
Mavrič, Boštjan, 1989- | 36364 |
Zahoor, Rizwan | 37776 |
Šarler, Božidar | 04101 |
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