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# Floor Heating System (Uniform) of a Room CFD Simulation, ANSYS Fluent Training

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The present problem simulates the heat transfer from a floor heating system into a room.

This product includes Geometry & Mesh file and a comprehensive Training Movie.

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## Floor Heating System Project Description

The present problem simulates the heat transfer from a floor heating system into a room by ANSYS Fluent software. In fact, this heating system is built into the floor of the room, which acts as a heat source. It is assumed that this heating system has a constant thermal flux of 166.6 W.m-2. The sidewalls and ceiling have a thickness of 0.2 m of wood, which has convection heat transfer with the outside; Thus, the ambient air temperature is assumed to be 280 K and the convection heat transfer coefficient is assumed to be 10 W.m-2.K-1. The purpose of this study is to investigate the heat transfer rate through the floor heating system to the interior of the room using natural convection and buoyancy effect. Therefore, gravity is applied to the model, and the air inside the room is considered to be an ideal gas.

## Room Geometry & Mesh

The present 3-D model is drawn using the Design Modeler software. The present model consists of a room in the shape of a rectangular cube with dimensions of 4 m * 3 m * 3.3 m. The figure below shows the geometry. The mesh is done using ANSYS Meshing software and the mesh type is structured. The element number is 93,280. The following figure shows the mesh. To simulate the present model, several assumptions are considered:

• We perform a pressure-based solver.
• The gravity effect on the fluid is equal to -9.81 m.s-2 along the z-axis.

A summary of the defining steps of the problem and its solution is given in the following table:

 (floor heating system) Models Viscous model k-epsilon k-epsilon model standard near-wall treatment standard wall function Energy on (floor heating system) Boundary conditions Sidewalls & roof wall wall motion stationary wall convection heat transfer coefficient 10 W.m-2.K-1 free stream temperature 280 K Ground wall wall motion stationary wall heat flux 166.66666 W.m-2 (floor heating system) Solution Methods Pressure-velocity coupling Coupled Spatial discretization pressure second-order momentum second-order upwind turbulent kinetic energy second-order upwind turbulent dissipation rate second-order upwind density second-order upwind energy second-order upwind (floor heating system) Initialization Initialization method Standard gauge pressure 0 Pascal velocity (x,y,z) 0 m.s-1 temperature 280 K

## Results

At the end of the solution process, the velocity, temperature, and pressure contours, pathlines, and velocity vectors are obtained in two-dimensional and three-dimensional.

You can obtain Geometry & Mesh file and a comprehensive Training Movie that presents how to solve the problem and extract all desired results.

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