مورد إلكتروني
A meshless solution of the compressible viscous flow in axisymmetric tubes with varying cross-sections
| العنوان: | A meshless solution of the compressible viscous flow in axisymmetric tubes with varying cross-sections |
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| بيانات النشر: | Uppsala universitet, Avdelningen för beräkningsvetenskap Univ Ljubljana, Fac Mech Engn, Askerceva Cesta 6, Ljubljana 1000, Slovenia. Univ Ljubljana, Fac Mech Engn, Askerceva Cesta 6, Ljubljana 1000, Slovenia. Univ Ljubljana, Fac Mech Engn, Askerceva Cesta 6, Ljubljana 1000, Slovenia. Univ Ljubljana, Fac Mech Engn, Askerceva Cesta 6, Ljubljana 1000, Slovenia.;Inst Met & Technol, Lepi Pot11, Ljubljana 1000, Slovenia. Elsevier BV 2022 |
| تفاصيل مُضافة: | Rana, Khush Bakhat Mavric, Bostjan Zahoor, Rizwan Sarler, Bozidar |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | 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. |
| مصطلحات الفهرس: | Compressible flow, Idealgas, Axisymmetry, Diffuse approximate method, PISO, Other Physics Topics, Annan fysik, Article in journal, info:eu-repo/semantics/article, text |
| DOI: | 10.1016.j.enganabound.2022.06.029 |
| URL: | Engineering analysis with boundary elements, 0955-7997, 2022, 143, s. 340-352 |
| الإتاحة: | Open access content. Open access content info:eu-repo/semantics/openAccess |
| ملاحظة: | application/pdf English |
| أرقام أخرى: | UPE oai:DiVA.org:uu-481768 doi:10.1016/j.enganabound.2022.06.029 ISI:000828303900003 1349082689 |
| المصدر المساهم: | UPPSALA UNIV LIBR From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1349082689 |
| قاعدة البيانات: | OAIster |
| DOI: | 10.1016.j.enganabound.2022.06.029 |
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