How Do I Calculate Lift and Drag with Winglets?

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To calculate lift characteristics such as coefficient of lift (Cl) and coefficient of drag (Cd) with winglets, understanding the non-linear nature of the problem is essential. Utilizing wind tunnel testing and computational fluid dynamics (CFD) is recommended, but one must first define the flow conditions, including airspeed and whether the flow is compressible or incompressible. It is crucial to select the appropriate solver, such as a potential flow solver or one based on the Navier-Stokes equations, after defining the geometry and grid for CFD analysis. Consulting foundational texts like "Fundamentals of Aerodynamics" and "Low Speed Aerodynamics" is advised to gain a clearer understanding of these calculations. A thorough grasp of these principles will facilitate more accurate lift and drag calculations involving winglets.
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Hi I need to know how to calculate lift characteristics like cl ,cd and so on... how can we include the winglets in it?
 
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Wind tunnel... cfd... addition of winglets is a non-linear problem.
 
viscousflow said:
Wind tunnel... cfd... addition of winglets is a non-linear problem.

Can u explain it in more clear way please??
 
why don't you just look through Fundamental of Aerodynamics and Low speed aerodynamics books to get some sense about how to calculate lift and drag ?
Then you come up here again and ask what you need exactly. You need to specify
your flow condition like airspeed..based on that we must imposed some laws: for instance,
compressible or incompressible,potential flow is applicable or not?
Those kinda things have to consider before you get your solutions. For CFD, you must define your geometry first..then..grid..then solver like potential flow solver or Full Navier Stoke equations. I recommend you read the books I mentioned and try to get some senses firstly.
Best Regards,
 

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