TY - JOUR ID - 4349 TI - Double diffusive natural convection in a partially layered cavity with inner solid conductive body JO - Scientia Iranica JA - SCI LA - en SN - 1026-3098 AU - Ismael, Muneer A. AU - Ghalib, Hassan S. AD - Mechanical Engineering Department, Engineering College, University of Basrah, Basrah, Iraq Y1 - 2018 PY - 2018 VL - 25 IS - 5 SP - 2643 EP - 2659 KW - Double-diffusive KW - cavity KW - Porous medium KW - inner body KW - finite difference DO - 10.24200/sci.2017.4349 N2 - This paper investigates the double–diffusive natural convection in partially layered square cavity. The cavity composed of porous layer on the left and fluid layer on the right. A conductive solid body is included inside the cavity to control the natural convection. The left wall is kept at constant high temperature and adjusted with high concentration, while the right wall is kept at low temperature and low concentration. The horizontal walls are thermally insulated. The 2-dimensional governing equations have been solved using up-wind scheme finite difference method. The Parndtl number and buoyancy ratio are fixed at 6.26 and 1, respectively. The problem has been governed by five parameters namely, Lewis number (Le = 1–50), Rayleigh number Ra (103-106), Darcy number (10-9-1), aspect ratio of the body relative to the cavity A (0.3, 0.5) and the position of the body. The results have showed that locating the solid body close to the mid height of the left wall gives maximum convective heat transfer, while minimum heat transfer is associated when the solid body is located at the cavity center. It is also found that the Nusselt and Sherwood numbers behave contradictory with the location of the solid body. UR - https://scientiairanica.sharif.edu/article_4349.html L1 - https://scientiairanica.sharif.edu/article_4349_7634a3a95a89576227549b2f962b3482.pdf ER -