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- Q17004999 subject Q8443230.
- Q17004999 abstract "An axial fan is a type of a compressor that increases the pressure of the air flowing through it. The blades of the axial flow fans force air to move parallel to the shaft about which the blades rotate. In other words, the flow is axially in and axially out, linearly, hence their name. The design priorities in an axial fan revolve around the design of the propeller that creates the pressure difference and hence the suction force that retains the flow across the fan. The main components that need to be studied in the designing of the propeller include the number of blades and the design of each blade. Their applications include propellers in aircraft, helicopters, hovercrafts, ships and hydrofoils. They are also used in wind tunnels and cooling towers. If the propeller is exercising propulsion, then efficiency is the only parameter of interest and other parameters like power required and flow rate are considered of no interest. In case the propeller is used as a fan, the parameters of interest includes power, flow rate, pressure rise and efficiency.An axial fan consists of much fewer blades i.e., two to six, as compared to ducted fans. Axial fans operate at high specific speed i.e., high flow rate and low head and hence adding more blades will restrict the high flow rate required for its operation. Due to fewer blades, they are unable to impose their geometry on the flow, making the rotor geometry and the inlet and outlet velocity triangles meaningless. Also the blades are made very long with varying blade sections along the radius.".
- Q17004999 thumbnail Axial_fan_slipstream_theory.svg?width=300.
- Q17004999 wikiPageExternalLink 19930091790.pdf.
- Q17004999 wikiPageExternalLink saeid-diss.pdf.
- Q17004999 wikiPageExternalLink surge-stall-and-instabilities-in-fans-contractors-mysteries.
- Q17004999 wikiPageExternalLink Tbn006.pdf.
- Q17004999 wikiPageExternalLink EL-03.pdf.
- Q17004999 wikiPageExternalLink Parallel_stall_md_en.pdf.
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- Q17004999 comment "An axial fan is a type of a compressor that increases the pressure of the air flowing through it. The blades of the axial flow fans force air to move parallel to the shaft about which the blades rotate. In other words, the flow is axially in and axially out, linearly, hence their name. The design priorities in an axial fan revolve around the design of the propeller that creates the pressure difference and hence the suction force that retains the flow across the fan.".
- Q17004999 label "Axial fan design".
- Q17004999 depiction Axial_fan_slipstream_theory.svg.