I'm intending to design a windmill to run some machinery. I am totally newbie in this field. I want to ask for some help from you guys. What are the parameters on the basis of which the aerofoils and windmills are designed?
The basic parameters are cl (coefficient of lift), cd (coefficient of drag) and cm (coefficient of pitching moment). Otherwise, it depends on what kind of machinery you are designing: turbomachinery, wind turbine, etc.
What is the chord length? Is it blade length? Why does. Coefficient of drag and lift come into picture?Can u elaborate the significance ?@Bibhu Sharma
The textbooks that were used at TU Delft for an intro to wind energy class were the "Wind Energy Handbook" and "Wind Energy Explained: Theory, Design and Application". These books overlap a lot, but you could probably get a feel for which you would like to purchase by looking at google books excerpts.
If you have no earlier experience about wind turbine, you need to just google "small wind turbine" and copy some already designed ones as designing a wind turbine is a complicated procedure calling for different engineering fields. You need to respect the fact that a wind turbine is an active system and its blade selection is only 1% of the design. It needs a control system (pitch-regulated or stall-regulated), it also needs a yaw system. Note that an uncontrolled wind turbine would damage all connected electrical devices and probably itself, due to excessive wind-induced vibrations.
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