Spectral method for analyzing motions of ellis fluid over corrugated boundaries / Bakhsheshi, M. Fazel in Transactions of the ASME . Journal of fluids engineering, Vol. 133 N° 2 (Fevrier 2011)  

Public ISBD [article]  inTransactions of the ASME . Journal of fluids engineering > Vol. 133 N° 2 (Fevrier 2011) . - 14 p. Titre : Spectral method for analyzing motions of ellis fluid over corrugated boundaries Type de document : texte imprimé Auteurs : Bakhsheshi, M. Fazel, Auteur ; Floryan, J. M., Auteur ; Kaloni, P. N., Auteur Année de publication : 2011 Article en page(s) : 14 p. Note générale : Fluids engineering Langues : Anglais (eng) Mots-clés : Spectral method Non-newtonian fluid Ellis Corrugated boundaries Immersed boundary condition Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : A spectral method for solving the steady flow of a shear-thinning Ellis fluid is discussed for the case of a planar channel with corrugated boundaries. Polynomial approximations are employed for the velocity and viscosity distributions in the regions around singularities. The proposed algorithm employs a fixed computational domain with the physical domain of interest submerged inside the computational domain. The flow boundary conditions are imposed using the concept of immersed boundary conditions. The method, thus, eliminates the need for grid generation. The algorithm relies on Fourier expansions in the flow direction and Chebyshev expansions in the transverse direction. Various tests confirm spectral accuracy of the algorithm. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA400013 [...] [article] Spectral method for analyzing motions of ellis fluid over corrugated boundaries [texte imprimé] / Bakhsheshi, M. Fazel, Auteur ; Floryan, J. M., Auteur ; Kaloni, P. N., Auteur . - 2011 . - 14 p. Fluids engineering Langues : Anglais (eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 133 N° 2 (Fevrier 2011) . - 14 p. Mots-clés : Spectral method Non-newtonian fluid Ellis Corrugated boundaries Immersed boundary condition Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : A spectral method for solving the steady flow of a shear-thinning Ellis fluid is discussed for the case of a planar channel with corrugated boundaries. Polynomial approximations are employed for the velocity and viscosity distributions in the regions around singularities. The proposed algorithm employs a fixed computational domain with the physical domain of interest submerged inside the computational domain. The flow boundary conditions are imposed using the concept of immersed boundary conditions. The method, thus, eliminates the need for grid generation. The algorithm relies on Fourier expansions in the flow direction and Chebyshev expansions in the transverse direction. Various tests confirm spectral accuracy of the algorithm. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA400013 [...]

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