Axial Fan Blade Design

Testing of axial flow fans.

Axial fan blade design.

The design point is defined by volume flow rate total pressure rise and rotational speed. Under design conditions the total pressure efficiency of the axial flow fan with the forward swept blade is the highest and the c type blade has slightly lower efficiency while the straight blade has the. The flow is axial at entry and exit. The structural design of the fan blade was performed by one of the project partners and does not form part of this paper.

Blade design wingtip with certain versions also featuring innovative peripheral components such as guide vanes diffuser and flowgrid. In this video we ll be demonstrating the aerodynamic design of an axial low pressure fan including a cfd simulation. The fan is designed to produce a pressure difference and hence force to cause a flow through the fan factors which determine the performance of the fan include the number and shape of the blades. Free vortex velocity distribution 6.

Insert the design point of the fan. These laws govern airflow pres sure capability and power required among many other parameters. Blading design blade sectional properties can be obtained from published data or xfoil. Blade element theory 7.

Ideal flow 1 3 frames of references 1 4 co ordinate system and components of velocity 1 5 velocity triangles on be turbine. The axiblade product range gets more out of the standard market footprint than any other axial fan. Axial fans with three kinds of blades are discussed and compared under design and off design conditions. Low noise axial fan blade designs such as the sickle profile use a swept design and thin trailing edge to reduce pure tones in the sound spectrum and decrease vortex shedding to generate low wake turbulence.

This creates the quieter axial fans required for the broad selection of industrial applications multi wing america services. Axial flow fans 1 0 definition of axial fans an axial flow fan moves air or gas parallel. An axial fan is a type of fan that causes gas to flow through it in an axial direction parallel to the shaft about which the blades rotate. Axial flow fan design.

Fan laws set of laws that predict perfor mance changes if one or more parameters are changed from one fan or operating condition to another. S series sickle shaped metal blades sheet steel or die cast aluminum. Carolus universität siegen institut für fluid und thermodynamik n09 085 a2 universität siegen institut für fluid und thermodynamik 1 1 axial cascade blade element be 1 2 actual vs.