Modeling Radiation and Natural Convection in Ansys Fluent

Modeling Radiation and Natural Convection

Many techniques have been introduced in the past years to improve the efficiency of heat exchange systems involving natural convection and/or forced convection, and with or without phase change. In this area of research, researchers have considered heat transfer enhancement in natural convection using an array of discrete plate segments in lieu of a continuous uninterrupted surface. Their study was aimed at reducing the thermal boundary layer thickness in order to obtain higher heat transfer coefficients.

In this tutorial, combined radiation and natural convection are solved in a three-dimensional square box on a mesh consisting of hexahedral elements.

This tutorial demonstrates how to do the following:

  • Use the surface-to-surface (S2S) radiation model in ANSYS FLUENT
  • Set the boundary conditions for a heat transfer problem involving natural convection and radiation
  • Calculate a solution using the pressure-based solver
  • Display velocity vectors and contours of wall temperature, surface cluster ID, and radiation heat flux

Problem Description

The problem to be considered is shown schematically in picture below. A 3D box (0.25m x 0.25m x 0.25m) has a hot wall of aluminum at 473 K. All other walls are made of an insulation material and are subject to radiative and convective heat transfer to the surroundings which are at 293 K. Gravity acts downwards. The medium contained in the box is assumed not to emit, absorb, or scatter radiation. All walls are gray. The objective is to compute the flow and temperature patterns in the box, as well as the wall heat flux, using the surface-to-surface (S2S) model available in ANSYS FLUENT.

Mr CFD Company services

Due to the wide range of mechanical science and the different fields of work as well as the abundance of projects, this company offers to view all the products presented in this section. In the absence of any desired project or project close to your request, you can search our portfolios in order to find your eligible project, after all, if you didn’t find any ideal project you can order your project from the services pages on the header of this website. Your order will be reviewed by our experts in the shortest possible time, and if we need more information about the proposed project, we will be in touch with you. After completing the required information to examine the proposed project, and confirming your request, the time, conditions and costs will be sent to you during the contract. This process will take place as soon as possible. If you have any question, you can contact to our online support section (the fixed blue tab below the page). If it is offline, don’t worry, you can post your message, and it will be answered as soon as possible.

Leave a Reply

Your email address will not be published. Required fields are marked *

Call On WhatsApp