| Main Info | Preprocessor | Postprocessor | Run DVM-2 now | Example | Author |

The 2-dimensional Discrete Vortices Method (DVM)
is applied to compute a flow around an airfoil and simplified theory of
finite-aspect ratio wing. The computing code takes into account: possible
flow separation on the upper surface, drag of suspension lines, flares
and payload, friction in turbulent boundary layer depending on Reynolds
number. It defines pressure distribution on the canopy and integral coefficients
of drag and lifting forces. The program helps to optimize rib geometry
with strengthening carcass and holes, position of intake, canopy plan geometry,
optimal angle of attack ensuring maximal Lift/Drag ratio, defines the position
of convergence point and appropriate suspension lines length for chosen
angle of attack. The DVM-2 has an interface with **MONSTR-2.2**
to ensure an aeroelastic approach in solution, to confirm that the canopy
keeps chosen perfect form under aerodynamic loading and to define structural
stressing state.

This program is the component of the** integrated
software **and consists of Pre/Postprocessor and two computing codes
for 2D and 3D problems respectively.

The **Preprocessor** helps to create and edit 3
types of data text files responsible for

- airfoil geometry as a set of polylines and/or B-splines, Reynolds number, number of attached vortices simulating the airfoil
- list of angles of attack to compute aerodynamic functions depending on this angle
- geometric parameters of finite-aspect ratio wing; length and drag coefficient of suspension lines; cargo weight, geometry and drag coefficients;

The **Postprocessor **displays results in multiwindow
graphic mode

- airfoil form
- structure of vortices
- pressure distribution around the airfoil for chosen angle of attack
- main aerodynamic coefficients of airfoil and wing depending on angle of attack
- flight velocities Vx, Vy, ratio Vx/Vy depending on angle of attack

The computing process is very fast and takes at about 5 minutes (200 vortices, 10 angles of attack).

In order to run the software
via Internet, please, visit our **Calculator**
or fill in and submit the **data form**.

**More examples of application? Click HERE to
visit Gallery.**

The author and copyright owner - Yuri Mosseev (e-mail: yuri.mosseev@mtu-net.ru)

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