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July 4, 2015, 12:33 |
Cooling in a room
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#1 |
New Member
Major
Join Date: Jul 2015
Posts: 2
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Hi all,
Let us suppose that a small cube (a = 10 cm) made of gold is placed at the ground supposed to be a semi-infinite plane medium made of wood. The small cube is enclosed (left, right and top) by a large cubic box (L = 2 m) filled with air and made of plaster. This configuration represents a small cube placed at the ground of a room. The initial temperature of the cube (Tic = 60°C) is known, the initial temperature of air in the box is known (Tia = 20°C) and also all the relevant parameters of the system (calorific capacities, heat transfer coefficients...). I would like to calculate the temperature of the center of the cube Tc(t) and obtain the 3D velocity field as a function of the time by taken into account : - the thermal transfer between the cube and the air (convection...) - the thermal transfer between the bottom of the cube and the surface of the ground on which it is placed (conduction by contact...) - the thermal transfer by radiation (cube and sides of the box). In this problem, the boundaries of the large box are supposed isolated (q = 0 due to the thermal isolation of the room). Up to now, I solved the problem only when the box is supposed infinite with a small cube that floats in air (cooling of a cube embedded in air) but how to set OpenFoam to solve the problem above ? In particular to take into account the surface on which the cube is posed ? Have you a similar model to proposed me ? Thank you for your help. |
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