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A meshless solution of the compressible viscous flow in axisymmetric tubes with varying cross-sections
ID
Rana, Khush Bakhat
(
Avtor
),
ID
Mavrič, Boštjan
(
Avtor
),
ID
Zahoor, Rizwan
(
Avtor
),
ID
Šarler, Božidar
(
Avtor
)
PDF - Predstavitvena datoteka,
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(5,74 MB)
MD5: 9F241EF9741EA0FDB698E23700F232A9
URL - Izvorni URL, za dostop obiščite
https://www.sciencedirect.com/science/article/pii/S0955799722002260
Galerija slik
Izvleček
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.
Jezik:
Angleški jezik
Ključne besede:
compressible flow
,
ideal gas
,
axisymmetry
,
diffuse approximate method
,
PISO
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2022
Št. strani:
Str. 340-352
Številčenje:
Vol. 143
PID:
20.500.12556/RUL-138374
UDK:
532:544.27:004.94
ISSN pri članku:
0955-7997
DOI:
10.1016/j.enganabound.2022.06.029
COBISS.SI-ID:
114950915
Datum objave v RUL:
18.07.2022
Število ogledov:
578
Število prenosov:
110
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Engineering analysis with boundary elements
Skrajšan naslov:
Eng. anal. bound. elem.
Založnik:
Elsevier
ISSN:
0955-7997
COBISS.SI-ID:
5605380
Licence
Licenca:
CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:
Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
stisljiv tok
,
idealni plin
,
osnosimetričnost
,
razpršena približna metoda
,
PISO
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Program financ.:
Young researchers
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0162
Naslov:
Večfazni sistemi
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
J2-1718
Naslov:
Napredno brezmrežno modeliranje in simulacija večfaznih sistemov
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Centre of Free Electron Laser
Naslov:
Innovative methods for imaging with the use of X-ray Free Electron Laser (XFEL) and synchrotron sources: simulation of gas-focused microjets
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