Title

Efficient Localized Meshless Modeling Of Natural Convective Viscous Flows

Abstract

A localized radial-basis function (RBF) collocation meshless method is developed for natural convection heat transfer problems in fully-viscous fluid flows. The expansion method is based on the localized collocation of the Hardy Muldquadrics RBF, and it is efficiently formulated to generate derivative fields through simple inner products of small order vectors. The solution of the Navier-Stokes equations is formulated using a third-order-accurate explicit fractional time-stepping method and a velocity correction scheme. The fluid flow is modeled as incompressible and driven by buoyancy forces through the Boussinesq approximation. A new automatic point distribution method along with an optimized topology generation technique is implemented in an auto-segmented load-balanced parallel computing environment for added accuracy and performance. Several cases are studied and confirmed to attain accurate results when compared to classical benchmark solutions as well as numerical predictions provided by the commercial CFD code Fluent.

Publication Date

1-1-2006

Publication Title

Collection of Technical Papers - 9th AIAA/ASME Joint Thermophysics and Heat Transfer Conference Proceedings

Volume

1

Number of Pages

545-561

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.2006-3089

Socpus ID

33845513922 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33845513922

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