Rotating sphere at Re=300

Rotating sphere

3D surface with acroread

For 3D, open as regular Adobe PDF file (1.6MB)

Cylinder results for Re=400

Protected: Some new results

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Flow around wall-mounted cylinder with UNS3

Note: only linear visual rendering for quadratic FEM

Unsteady 3D computations with my MF3/UNS3 flow solver

Note: only linear visual rendering for quadratic FEM

Global flow stability results for the flow around a sphere at Re = 300


Preliminary results, obtained with parallel, 3D global stability analysis for the flow around a sphere. The real part of one of the dominating eigenvectors is shown. Vx,Vy,Vz and averaged V values are depicted. Details of the procedure are described in Morzyński & Thiele, AIAA 2008-3865,  Finite Element Method for Global Stability Analysis of 3D Flows.


mode_0_a

mode_0_b

Stable zero frequency mode  Re=300

mode1_remode1_im

Eigenmode – Re and Im part, Re=300

mode2_im

mode2_re

Eigenmode – Re and Im part, Re=300

mode2_re_vxmode2_re_vymode2_re_vz

Eigenmode, Re=300, Vy, Vz and Vx component, respectively.

disturb_final-258

Stable, double-thread wake for Re=250  computed with unsteady solver.  Vx is depicted.

Disturbance for a sphere flow

Initial disturbance development, after unsymmetrical perturbation i y-direction for the flow around a sphere (Vx, Vy,Vz).

disturb_x disturb_y disturb_z

disturb_stream1 disturb_stream11 disturb_stream2

Streamlines

My CFD code MF3

cube

Further development of my CFD code (MF3) is targeting flow stability and control. The parallel unstructured FEM solver is science-oriented. It is penalty formulation based Navier-Stokes solver using quadratic tetrahedral elements.

export4

Click here (60MB!) for the film showing  details of the flow around a sphere.


New page – Udine CISM 2008 course Reduced-Order Modeling

Here you can find a link to a Udine CISM 2008 course Reduced-Order Modeling page – hopefully the forum for ROM community.