Abstract
The main objective of this study was to map the flow field inside the data rack model, fitted with three 1U server models. The server model is based on the common four-processor 1U server. The main dimensions of the data rack model geometry are taken fully from the real geometry. Only the model was simplified with respect to the greatest possibility in the experimental measurements. The flow field mapping was carried out both experimentally and numerically. PIV (Particle Image Velocimetry) method was used for the experimental flow field mapping, when the flow field has been mapped for defined regions within the 2D/3D data rack model. Ansys CFX and OpenFOAM software were used for the numerical solution. Boundary conditions for numerical model were based on data obtained from experimental measurement of velocity profile at the output of the server mockup. This velocity profile was used as the input boundary condition in the calculation. In order to achieve greater consistency of the numerical model with experimental data, the numerical model was modified with regard to the results of experimental measurements. Results from the experimental and numerical measurements were compared and the areas of disparateness were identified. In further steps the obtained proven numerical model will be utilized for the real geometry of data racks and data.
Highlights
The paper aims to build on existing work in investigation of flow in data racks
The server model is based on the common four-processor 1U server
PIV (Particle Image Velocimetry) method was used for the experimental flow field mapping, when the flow field has been mapped for defined regions within the 2D/3D data rack model
Summary
The paper aims to build on existing work in investigation of flow in data racks. Several approaches were designed and verified within the previous research allowing for identification of the flow field within the data rack. The data rack model was fitted with only three 1U models of servers that were used in previous measurements This model by its design is based on real 1U server fitted with four sockets for CPU. One of the desired results is the quantification of flows within the recirculation zone Another modification, as opposed to the real data rack, is a circular hole in the bottom of data rack model due to power supply and management of server models. The reason for shifting was the fact that the power supply and management of individual servers were located in the symmetry plane and the servers in the area generated a minimum mass flow rate. It was necessary to adjust the position of the laser sheet during the measurement so that the measured area was continuously illuminated by necessary intensity and the signal degradation was avoided
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
