# International Association for Hydro-Environment Engineering and Research

IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
 You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Numerical and Computational Fluid Dynamics Modal for Thermal Energy in a 3-D Array in a Frozen Lake
 Numerical and Computational Fluid Dynamics Modal for Thermal Energy in a 3-D Array in a Frozen Lake Author : Chamika De Costa The purpose of this project is to create a CFD program that can simulate Heat flow in a fluid volume. This is to overall optimize energy consumption in a control volume while regulating temperature.Modeling heat flow in a medium is a complicated process. It is essential that all aspects of heat flow, such as conduction, convection and radiation has to be covered in order to accurately predict heat flow. Computational Fluid Dynamics (CFD) enables us to iterate a solution many times quickly and therefore we are capable of solving complicated problems in minutes. However, equations such as turbulence equations of fluids and the heat transfer equations have to be changed into iterable forms and combined into one formula to make a functioning CFD model. This paper will concentrate on the process of deriving such formula. The paper will also discuss the advantages and disadvantages of the model and how it will be used in further research in the future. The modal will be used to simulate heat flow within a frozen lake through a season, with estimation of how much ice will be formed as well as the minimum and max temperature profile of the lake. The results will be compared with analytical results. The paper will be using Finite Difference Method (FDM) with the help of Tailor expansion to derive the model. The derivative will be similar to Probability density modal as well as the combination of Prandtl?s one equation model. The basic equation will be confirmed with Navier Stokes equation. The final discussions will outlive why there are inaccuracies in the derived modal, but how it can be neglected in specific scenarios. File Size : 593,468 bytes File Type : Adobe Acrobat Document Chapter : IAHR World Congress Proceedings Category : 35th IAHR Congress - Chengdu (2013) Article : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT Date Published : 18/07/2016 Download Now