Modeling Water Imbibition in Porous Ceramics Using Richards Equation

Non-Isothermal wicking

Undergraduate Thesis 

Numerical Investigation for Entropy Generation of Natural Convection Flow and Heat Transfer inside a Prismatic Enclosure 

This work examines the entropy generation and heat transfer in an air filled prismatic enclosure. This configuration has applications for heat transfer in domestic buildings with an aim to provide thermal comfort to the occupants in attic-shaped buildings as well as minimizing the energy costs associated with heating and air-conditioning. 

Applications

Convective heat transfer has applications in different fields such as heat exchanging devices, cooling automobile engines, welding equipment and to cool high heat-flux devices such as high power microwave tubes and high-power laser diode arrays. Entropy generation analysis can be used for a direct identification of the causes of inefficiency and opens up the possibility for designing effective systems.

Methodology

For this problem non-dimensional Navier-stokes & thermal energy equations are used as governing equation. Finite element method (FEM) is used with the help of COMSOL Multiphysics® to solve the governing equations. The simulated results are represented in terms of streamlines and isotherms. Average Nusselt number is also represented for different conditions. The average Nusselt number is observed along the top of the thick bottom wall.