caa a22 4500 46316265X CHVBK 20180406164752.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s11242-007-9106-7 doi (NATIONALLICENCE)springer-10.1007/s11242-007-9106-7 Free convection from one thermal and solute source in a confined porous medium [Elektronische Daten] [Fu-Yun Zhao, Di Liu, Guang-Fa Tang] This paper reports a numerical study of double diffusive natural convection in a vertical porous enclosure with localized heating and salting from one side. The physical model for the momentum conservation equation makes use of the Darcy equation, and the set of coupled equations is solved using the finite-volume methodology together with the deferred central difference scheme. An extensive series of numerical simulations is conducted in the range of −10 ⩽ N ⩽ +10, 0 ⩽ R t ⩽ 200, 10−2 ⩽ Le ⩽ 200, and 0.125 ⩽ L ⩽ 0.875, where N, R t , Le, and L are the buoyancy ratio, Darcy-modified thermal Rayleigh number, Lewis number, and the segment location. Streamlines, heatlines, masslines, isotherms, and iso-concentrations are produced for several segment locations to illustrate the flow structure transition from solutal-dominated opposing to thermal dominated and solutal-dominated aiding flows, respectively. The segment location combining with thermal Rayleigh number and Lewis number is found to influence the buoyancy ratio at which flow transition and flow reversal occurs. The computed average Nusselt and Sherwood numbers provide guidance for locating the heating and salting segment. Springer Science+Business Media, Inc., 2007 Free convection nationallicence Porous medium nationallicence Numerical solution nationallicence Heatlines nationallicence Discrete source nationallicence Zhao Fu-Yun College of Civil Engineering, Hunan University Changsha, 410082, Hunan, P. R. China aut Liu Di College of Civil Engineering, Hunan University Changsha, 410082, Hunan, P. R. China aut Tang Guang-Fa College of Civil Engineering, Hunan University Changsha, 410082, Hunan, P. R. China aut Transport in Porous Media Springer Netherlands 70/3(2007-12-01), 407-425 0169-3913 70:3<407 2007 70 11242 https://doi.org/10.1007/s11242-007-9106-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11242-007-9106-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhao Fu-Yun College of Civil Engineering, Hunan University Changsha, 410082, Hunan, P. R. China aut NATIONALLICENCE 700 1- Liu Di College of Civil Engineering, Hunan University Changsha, 410082, Hunan, P. R. China aut NATIONALLICENCE 700 1- Tang Guang-Fa College of Civil Engineering, Hunan University Changsha, 410082, Hunan, P. R. China aut NATIONALLICENCE 773 0- Transport in Porous Media Springer Netherlands 70/3(2007-12-01), 407-425 0169-3913 70:3<407 2007 70 11242 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer