CFD FLUENT DYNAMIC MESH

Mesh elements around moving wings of dragonfly.

Numerical analysis of four-winged insect flight.
The dragonfly Juncea Aeshna was selected as a representative of the flying four-winged insect family for simulation study. In Catia software a geometric model is developed based on photos of the Juncea Aeshna dragonfly. Then this model is imported to Gambit software which generates a mesh for the purpose of numerical calculations. Elements of the mesh are fine around the space in which the wings move. Numerical calculations in three dimensional space are realized in the Fluent software. CFD calculations of insect flight are performed to adequately simulate flight in hovering mode.

Research is performed in Warsaw University of Technology - The Faculty of Power and Aeronautical Engineering - Institute of Aeronautics and Applied Mechanics.

Category:

Science & Technology

Tags:

• CFD
• FLUENT
• ANSYS
• 12.1
• PostCFD
• DYNAMIC
• MESH

[lequi7]

How long did it take to complete and in which hardware? Number of elements?

[Kazzq1]

@lequi7

Cześć, I have calculated 3 cycles of wings motion, each cycle took around 24h. This simulation was performed on Q9554, 4 cores each overclocked to 3,85 [GHz]. Mesh size increased during calculation. It was started at 1st cycle with 0.25 [mln] and during remeshing finall number of elements was about 1 [mln].

[doctsh]

Hi..I am trying to simulate a simple 2D flapping swimmer..How can I write udf? I am failing as could not visualise the motion I wanted....any help plz..

[e2kk]

there is no Boundary Layer right ?