97 American Scientific Research Journal for Engineering, Technology, and Sciences (ASRJETS) ISSN (Print) 2313-4410, ISSN (Online) 2313-4402 © Global Society of Scientific Research and Researchers http://asrjetsjournal.org/ Mass and Heat Transfer Enhancement during 3D Vibrating Drying of a Clay Porous Brick Nidhal Ben Khedher* College of Engineering, Mechanical Engineering Department, Haïl University, Haïl City, Saudi Arabia, City Laboratoire d'Études des Systèmes Thermiques et Énergétiques, Ecole Nationale d'Ingénieurs de Monastir, Monastir 5019 Tunisie Email: nidhal.ben.khedher@gmail.com Abstract A three dimensional coupled heat and moisture transfer model for vibrating convective drying process of unsaturated porous medium was established. The aim of this paper is to study the effect of vibration on the drying of whole brick. A Three-dimensional unstructured Control Volume Finite Element Method (CVFEM) is developed. In order to simulate 3-D complex geometries, as application here the drying of whole brick, we developed Fortran modules to build the polygonal CVFEM mesh based on 3-D unstructured meshes generated by the free mesh generator Gmsh. The temperature, the liquid saturation and pressure distributions for whole brick were presented and analyzed for both cases namely with and without vibration. The results obtained state that the drying process is highly enhanced by vibration and the drying time is reduced by 20%. Keywords: 3D vibrating drying; CVFEM; Gmsh; unsaturated porous media. 1. Introduction Technology of vibrating drying has been widely used in industry in several developed countries, and it has gained more and more attention. Since, the vibration has been found to enhance heat and mass transfer mechanisms. However, A review of literature shows that only few research papers were conducted to investigate this technique of drying. Beck and his colleagues investigate the influence of airborne ultrasound conditions on the drying [1]. Moreover, a fundamental study of the drying intensification by vibration was established by Colin and his colleagues [2]. ------------------------------------------------------------------------ * Corresponding author.