Advanced Modelling of Fluid-Structure Interactions
The project has been focussed on the large and harmful vibrations that can result when a bluff body is placed in a flow. We have used the Pawsey facility to model accurately the motions of both elastically mounted bodies and those rolling down slopes. These cases underpin many of the particle-wall interactions that occur in particle technology and sedimentation, and those vibrations that occur in heat exchangers, marine platforms and many other practical situations.![Magnifying glass](https://pawsey.org.au/wp-content/themes/project/img/project-area.png)
Area of science
Applied Science, Fluid Dynamics![CPU](https://pawsey.org.au/wp-content/themes/project/img/project-systems.png)
Systems used
Magnus![Computer](https://pawsey.org.au/wp-content/themes/project/img/project-applications.png)
Applications used
Inhouse Spectral Element method; OPENFoam.The Challenge
The challenge is to understand the mechanisms leading to vibration of 3D bodies, which is poorly understood, in order to either mitigate them to prevent structural damage, or to enhance them for energy harvesting purposes.
The Solution
We need to understand why different types of vibration occur for 3D bodies, such as vortex-induced vibration, motion-induced vibration such as galloping and flutter, and wake-induced vibration such as when a second body is located upstream. By modelling the processes using high performance computing, the large-scale flow structures associated with the vibrations can be determined and means of controlling them can be formulated.
The Outcome
The computation of time-dependent, turbulent flows around 3D bodies is an extremely resource-hungry process requiring high power computing and large data storage. The Pawsey Centre’s facility provides a means that the research in Australia remains leading-edge and provides downstream solutions for Australian industry.
List of Publications
Publications in 2018/19 explicitly using NCMAS
Journal Articles
1. Rajamuni, M.M., Thompson, M.C. & Hourigan, K., Vortex-Induced Vibration of elastically-mounted spheres: a comparison of the response of three-degrees-of-freedom and one-degree-of-freedom systems, Journal of Fluids and Structures (accepted 2 February 2019).
2. Rajamuni, M.M., Thompson, M.C. & Hourigan, K., Vortex-induced vibration of a transversely rotating sphere, Journal of Fluid Mechanics, 847, 786-820, 2018.
3. Rajamuni, M.M., Thompson, M.C. & Hourigan, K., Transverse flow-induced vibrations of a sphere, Journal of Fluid Mechanics, 837, 931-966, 2018.
Conference Papers
1. Gupta, S., Sharma, A., Agrawal, A. & Hourigan, K., Effect of Strouhal Number on an Undulating Hydrofoil – from Drag to Thrust Generation, Proceedings of the 7th International and 45th National Conference on Fluid Mechanics and Fluid Power (FMFP), December 10-12, 2018, IIT Bombay, Mumbai, India.
2. Rajamuni, M. M., Thompson, M. C. & Hourigan, K., An efficient FSI solver for multiple-degree-of-freedom flow-induced vibration. 30th International Conference of Parallel Computational Fluid Dynamics (ParCFD), (Eds. C. Sheng et al.), Indianapolis, Indiana, USA, 14-17 May 2018.
3. Rajamuni, M. M., Thompson, M. C. & Hourigan, K., Flow-induced vibration of a sphere, 7th Conference on Bluff Body Wakes and Vortex-Induced Vibrations (BBVIV), (Eds. T. Leweke and C.H.K. Williamson), Carry-le-Rouet (Marseille), France, 3-6 July 2018.
Publications in 2018/19 with auxiliary validating experimental studies
Journal Articles
1. Sareen, A., Zhao, J., Sheridan, J., Hourigan, K. & Thompson, M.C., The effect of imposed rotary oscillation on the flow-induced vibration of a sphere, Journal of Fluid Mechanics, 855, 703-735, 2018.
2. Sareen, A., Zhao, J., Sheridan, J., Hourigan, K. & Thompson, M.C., Vortex-induced vibrations of a sphere close to a free surface, Journal of Fluid Mechanics, 846, 1023-1058, 2018.
3. Sareen, A., Zhao, J., Lo Jacono, D., Sheridan, J., Hourigan, K. & Thompson, M.C., Vortex-induced vibration of a rotating sphere, Journal of Fluid Mechanics, 837, 258-292, 2018.
4. Zhao, J., Hourigan, K., Thompson, M.C., Flow-induced vibration of D-section cylinders: An afterbody is not essential for vortex-induced vibration, Journal of Fluid Mechanics, 851, 317-343, 2018.
5. Zhao, J., Lo Jacono, D., Sheridan, J., Hourigan, K. & Thompson, M.C., Experimental investigation of in-line flow-induced vibration of a rotating circular cylinder, Journal of Fluid Mechanics, 847, 664-699, 2018.
Conference Papers
1. Zhao, J., Hourigan, K. & Thompson, M.C., Flow-induced vibration of high-side-ratio rectangular cylinders, IUTAM Symposium on Critical flow dynamics involving moving/deformable structures with design application, Santorini, Greece, June 18-22, 2018.
2. Zhao, J., Hourigan, K. & Thompson, M.C., Flow-induced vibration of elliptical cross-sectional cylinders, 7th Conference on Bluff Body Wakes and Vortex-Induced Vibrations (BBVIV), (Eds. T. Leweke and C.H.K. Williamson), Carry-le-Rouet (Marseille), France, 3-6 July 2018.
3. Sareen, A., Zhao, J., Sheridan, J., Hourigan, K. & Thompson, M.C., Effect of a free surface on the VIV response of a sphere, 7th Conference on Bluff Body Wakes and Vortex-Induced Vibrations (BBVIV), (Eds. T. Leweke and C.H.K. Williamson), Carry-le-Rouet (Marseille), France, 3-6 July 2018
Figure 3. Predicted vorticity in the wake of a rotating sphere, with increasing rotation rate from top to bottom.
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