Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 1.4

ISSN Imprimir: 1940-2503
ISSN On-line: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2012003330
pages 531-537

OUTFLOW BOUNDARY CONDITION IN THE FINITE-VOLUME METHOD FOR UNSTEADY-STATE FLUID FLOW COMPUTATION WITH VARIABLE DENSITY

Yohsuke Matsushita
Research and Education Center of Carbon Resources, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan

RESUMO

This paper presents the outflow boundary condition for unsteady-state fluid flow computations with variable density as part of the semi-implicit method for pressure-linked equations (SIMPLE) calculation in the finite-volume method. In the SIMPLE algorithm, there is no built-in numerical procedure to calculate the velocities at an outflow boundary. The outflow boundary condition is meant to satisfy the mass flow rate between the inflow and outflow boundary conditions and the sum of all transient terms over the entire computational domain. When the proposed outflow boundary condition for unsteady-state computations is applied to a thermal fluid flow calculation, stable, robust, and highly accurate mass conservation is obtained compared with that obtained for steady-state calculations. Therefore, the proposed outflow boundary condition is expected to have wide applicability in unsteady-state fluid flow computations with variable density, such as in combustion calculations.


Articles with similar content:

Nodal Integral Immersed Boundary Method for convection-diffusion physics in complex domain
Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019), Vol.0, 2019, issue
Amritpal Singh, Manish Kumar, Neeraj Kumar
OUTFLOW BOUNDARY CONDITION FOR THE UNSTEADY-SATE FLUID FLOW COMPUTATION WITH VARIABLE DENSITY ON A COLLOCATED GRID
Computational Thermal Sciences: An International Journal, Vol.6, 2014, issue 5
Tomoyuki Katayama, Yasuhiro Saito, Sohey Nozawa, Tatsuya Soma, Hideyuki Aoki, Yohsuke Matsushita
A LOCAL EXPANSION METHOD FOR SOLVING THE MACROSCOPIC MOMENTUM EQUATION OF THE SINGLE PHASE FLOW IN HIGHLY PERMEABLE POROUS MEDIA
Journal of Porous Media, Vol.21, 2018, issue 10
Zhi-Feng Liu, Jun-wen Liu, Xiao-Hong Wang, Zhi-Fan Liu, An-Feng Shi
A PREDICTION PROCEDURE FOR FULLY DEVELOPED TURBULENT FLOW AND HEAT TRANSFER IN TUBE BANKS
International Heat Transfer Conference 6, Vol.4, 1978, issue
Brian E. Launder, T. H. Massey, J. A. Hitchcock
VORTEX SHEDDING AND HEAT TRANSFER OF 2-D FLOWS OVER A SQUARE SECTIONED CYLINDER
International Heat Transfer Conference 10, Vol.6, 1994, issue
X. W. Lin, W. M. Pun, A. S. C. Ma