[mnobrega]

Comments and questions are welcomed on the article Barestrand et al., Modeling Convective Heat Transfer of Air in a Data Center Using OpenFOAM: Evaluation of the Boussinesq Buoyancy, OpenFOAM Journal, https://doi.org/10.51560/ofj.v3.59.

[Marpole]

Thanks for the paper. Can you elaborate "An opening is therefore made in the geometry to act as a pressure reference to alleviate this, enabling the use of a specified flow rate for the CRAH-return areas."? Is this opening the supply area (grey)?

[broccolibadger]

Hi Marpole,

The pressure opening acts as a sort of reference, indirectly modelling that the data center is not airtight towards the atmosphere. Here it is done by making a small 10x10 cm hole with a simple pressure boundary condition. The effect on the stiffness of the CFD solution is substantial in how it improves convergence due to the other boundaries using enforced mass flows to preserve continuity across racks.

/Henrik