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Simulation for Industrial and Commercial Fan

Predict and optimize fan efficiency and performance

High efficiency is an important criteria in the fan design process as fans consume 18% of electricity in commercial and industrial buildings and processes. With standards such as ASHRAE 90.1-2013 and Commission Regulation (EU) No 327/2011 there are requirements for fan efficiency based on the metrics such as FEG, FMEG and FEI. these standards greatly impact fan design conditions and thus selection by customers.

To meet efficiency goals the classical approach of Design- Build-Test-Redesign is time consuming and expensive. Fan designers are now turning to an effective method to virtually test, make accurate aerodynamic assessment and optimize using engineering simulation.

Computational Fluid Dynamics (CFD) is the method that is used for the computerized calculation of fan aerodynamic quality to accurately predict fan performance earlier in the design stage, analyze various designs, reduce the number of physical prototypes and expensive testing and optimize design for maximum performance and shorten design cycle and cost.

SimScale CFD allows fan designers to calculate flow rates, static pressure, total pressure, static efficiency, total efficiency, peak total efficiency, forces and moments acting on the fans and etc. In addition SimScale platform also enables to analyze and optimize fan vibrations and conduct structural analyses on the foils, brackets, and structural mounts to ensure structural reliability.

fans simulation

CFD simulation of centrifugal fan to predict the aerodynamic efficiency

Overview: This CFD analysis is made on a centrifugal radial compact fan with forward curved impeller that is used for electronics cooling applications such as thermal management for the infotainment, IT and telecom systems.

Goal: The focus of this 3D simulation is to predict the fan aerodynamic performance and identify areas for design optimization.

Results: The following contours show a 3D visualization of static pressure, flow velocity and the aerodynamic forces acting on the rotor. The performance curves obtained from this analysis are key indicators to decide whether the design meet the requirements or needs optimization.

centrifugal fan 1
centrifugal fan 2
centrifugal fan 3
centrifugal fan 4
centrifugal fan performance 1
centrifugal fan performance 2
centrifugal fan performance 3
centrifugal fan performance 4

Simulation of tangential fan to study aerodynamics and vibration performance

Overview: Tangential fans are used widely throughout the HVAC and electronics industry. They produce a fairly two-dimension flow and can be mounted horizontally or vertically.

Goal: The design objective is to obtain maximum flow across the fan, while maintaining lowest possible levels of vibration. Hence it is important for the designer to study and optimize the performance characteristics in early design stage to avoid substantial cost spent in building physical prototypes.

Results: The outcome of CFD analysis visualizes the flow field using contour plots. It aims at predicting the maximum air flow for a specific rotation speed of the fan. subsequently  the output of the CFD result, the forces which acts on the blades was converted to average load, in order to define them as the boundary condition for vibrational analysis to find the maximum displacements expected due to vibration.

CrossFan 1
CrossFan 2
CrossFan 3
CrossFan 4

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