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README	2022-05-28	Martin Beaudoin	[efc4b8] Add a reference to the OpenFOAM Wiki page docum...

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Petit et al. [1] provides a detailed description of the Timisoara Swirl Generator
OpenFOAM case-study. The design of the geometry and experimental results are
described thoroughly in [2-10]. The Timisoara Swirl Generator was developed at
Politehnica University of Timisoara. It consists of four leaned strouts, 13 guide
vanes, a free runner with 10 blades and a convergent divergent draft tube.
The guide vanes create a tangential velocity component while keeping a
quasi-constant pressure. The purpose of the free runner is to re-distribute the
total pressure by inducing an excess in the axial velocity near the shroud and
a corresponding deficit near the hub, like a Francis turbine operating at 70%
partial discharge. The runner blades act like a turbine near the hub, and a pump
near the shroud. Thus the runner spins freely, without any total torque.
The design value for the rotation of the runner is 870 rpm, but a stroboscope
measurement on the test rige gave a slightly higher rotation, 920 rpm.

The measurements were performed at Politehnica University of Timisoara and were
first presented by Bosioc et al. [10]. The flow rate was kept at 80% of the
maximum power of the pump, that is 30 liter/s. The rotational speed of the free
runner was 920 rpm. Velocity components have been measured in three different
windows using using LDV. The unsteady static presure measured at four positions
using Cole-Parmer unsteady pressure transducers.

References:

[1] Petit, O., Bosioc, A., Nilsson, H., Muntean, S., Susan-Resiga, R., Unsteady
    Simulation of the Flow in a Swirl Generator Using OpenFOAM, International
    Journal of Fluid Machinery and Systems, Vol. 4, No. 1, January-March 2011,
    DOI:10.5293/IJFMS.2011.4.1.199

[2] Susan-Resiga, R., Muntean, S., Bosioc, A., Stuparu, A., Milos, T., Baya,
    A., Bernad, S., and Anton, L.E., 2007, “Swirling Flow Apparatus and Test
    Rig for Flow Control in Hydraulic Turbines Discharge Cone”, in Proceedings
    2nd IAHR International Meetings of the Workgroup in Cavitation and Dynamic
    Problems in Hydraulic Machinery and Systems, Scientific Bulletin of the
    Politehnica University of Timisoara, Transcations on Mechanics, Vol. 52(66),
    Fasc.6, pp. 203-216.

[3] Susan-Resiga, R., Muntean, S., Tanasa, C., and Bosioc, A., 2008,
    “Hydrodynamic Design and Analysis of a Swirling Flow Generator”, in
    Proceedings of the 4th German – Romanian Workshop on Turbomachinery
    Hydrodynamics (GRoWTH), June 12-15, 2008, Stuttgart, Germany.

[4] Bosioc, A., Susan-Resiga, R., and Muntean, S., 2008, “Design and
    Manufacturing of a Convergent-Divergent Test Section for Swirling Flow
    Apparatus”, in Proceedings of the 4th German – Romanian Workshop on
    Turbomachinery Hydrodynamics (GRoWTH), June 12-15, 2008, Stuttgart, Germany.

[5] Susan-Resiga, R., Muntean, S., and Bosioc, A., 2008, “Blade Design for
    Swirling Flow Generator”, in Proceedings of the 4th German – Romanian
    Workshop on Turbomachinery Hydrodynamics (GRoWTH), June 12-15, 2008,
    Stuttgart, Germany.

[6] Susan-Resiga, R., Vu, T.C., Muntean, S., Ciocan, G.D., and Nennemann, B.,
    2006, “Jet Control of the Draft Tube Vortex Rope in Francis Turbines at
    Partial Discharge”, in Proceedings of the 23rd IAHR Symposium on Hydraulic
    Machinery and Systems, Yokohama, Japan, Paper F192.

[7] Muntean, S., Susan-Resiga, R., Bosioc, A., Stuparu, A., Baya, A., Anton, L.E.,
    2008, “Mitigation of Pressure Fluctuation in a Conical Diffuser with
    Precessing Vortex Rope Using Axial Jet Control Method”, in Proceedings of
    the 24th IAHR Symposium on Hydraulic Machinery and Systems, Foz do Iguassu,
    Brazil.

[8] Muntean, S., Susan-Resiga, R., and Bosioc, A., 2009, “Numerical Investigation
    of the Jet Control Method for Swirling Flow with Precessing Vortex Rope”, in
    Proceedings of the 3rd IAHR International Meeting of the Workgroup on
    Cavitation and Dynamic Problem in Hydraulic Machinery and Systems, Brno,
    Czech Republic.

[9] Susan-Resiga, R., and Muntean, S., 2008, “Decelerated Swirling Flow Control
    in the Discharge Cone of Francise Turbines”, in Proceedings of the 4th
    International Symposium on Fluid Machinery and Fluid Engineering, Beijing,
    China. Paper IL-18.

[10] Bosioc, A., Susan-Resiga, R., and Muntean, S., 2009, “2D LDV Measurements
     of Swirling Slow in a Simplified Draft Tube”, in Proceedings of the CMFF.

[11] Muntean, S., Nilsson, H., and Susan-Resiga, R., 2009, “3D Numerical Analysis
     of the Unsteady Turbulent Swirling Flow in a Conical Diffuser Using Fluent
     and OPENFOAM”, in Proceedings of the 3rd IAHR International Meeting of the
     Workgroup on Cavitation and Dynamic Problem in Hydraulic Machinery and
     Systems, Brno, Czech Republic. ISBN: 978-80-214-3947-4

[12] Bergman, O. "Numerical investigation of the flow in a swirl generator,
     using OpenFOAM", Master's thesis 2010:25, Chalmers University of Technology,
     2010.

[13] Petit, O., Bosioc, A., Nilsson, H., Muntean, S., Susan-Resiga, R., A Swirl
     Generator Case Study for OpenFOAM, In proceedings of 25th IAHR Symposium on
     Hydraulic Machinery and Systems, 2010, Timisoara, Romania,
     ISBN: 978-606-554-134-4, ISBN: 978-606-554-135-1 (vol 1).

[14] S. Muntean, A. Bosioc, R. Stanciu, C. Tanasa and R. Susan-Resiga, "3D
     Numerical Analysis of a Swirling Flow Generator", 4-th International
     Meeting on Cavitation and Dynamic Problems in Hydraulic Machinery and
     Systems, October, 26-28, 2011, Belgrade, Serbia.

[15] A. Bosioc, "Swirling flow control in the draft tube cone of hydraulic
     turbines", PhD. Thesis 2011, Politehnica University of Timisoara.

See the following site for all the details:
https://openfoamwiki.net/index.php/Sig_Turbomachinery_/_Timisoara_Swirl_Generator