Flow over NACA0008 for various Angles of attack

Google drive link to all the contours and plot:

https://drive.google.com/open?id=1fBI5Zcassvv2ut9o2Qsy7ktrIq3LQx10

The link contains all the plots for various angles of attack and the pressure and velocity distribution for all cases.

 

The airfoil used was NACA0008. A chord length of 0.5m was used for the wing with a wingspan of 0.5m.

The lift and drag forces variation are shown in the plot:

The data for each case was extracted from solidworks and plotted in MATLAB.

  • We see that as we increase the angle of attack from 0 degrees gradually, the lift and drag forces also start to increase gradually from 0.
  • The drag initially rises slowly and after a certain point ,it rises very rapidly.
  • The lift force rises very rapidly as we increase the angle of attack.
  • We see that as we keep on increasing the angle of attack, after a certain point (here 6 degrees) the lift forces starts to fall down and drag rises up as usual.
  • This phenomenon is known as stalling of the wing.
  • Due to very high speed of the flow and less energy, the flow is unable to follow the curved surface of the wing and starts to separate from the surface.
  • This is known as flow separation, the separated flow starts to recirculate in that region and forms vortices i.e. swirling whirlpools of air.
  • The vortices induce a very low pressure in the region where they are formed.
  • Due to this low pressure region formed behind the wing, large drag is induced and lift falls down considerably.

 


Projects by Utkarsh Garg

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Google Drive Link for all sorce code files and functions files https://drive.google.com/open?id=1UE-_9nn7VMuXmUqr3XWFgwbxaaGaNpdX   Outputs: 1. Jacobi Method The program also showed the following output in the command window \"The Jacobi Solver could not co Read more

Hagen Poiseuille s Flow
Utkarsh Garg · 2018-06-15 20:28:52

Google drive link to all the blockMeshDict file for various angles: https://drive.google.com/open?id=1GuYMGjgkJHC8hovIfkqA1sp4k1OdNR1t Google drive link to all the plots and source code: https://drive.google.com/open?id=1ntyenSwIed9JrNxDXwMKVZIeMk0-xNrk   Assu Read more

Google drive link containing source code for both functions and all the plots https://drive.google.com/open?id=1q-2do7AV4YP2U5ilL54n37U3CXuNoeNK   Observations and Conclusions: 1. Normalized Mass flow rate We see that in case of conservative form of governing Read more


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