Analysis of Vortex Induced Vibration Using IFS


Prateek Chaturvedi1, Ruchira Srivastava1, Sachin Agrawal2 and Karan Puri3
1Amity University, India, 2Skyline Institute of Engineering and Technology, India and 3DIT School of Engineering, India


nteraction of fluid structure (IFS) is one of the upcoming field in calculation and simulation of multi-physics problems. IFS play an important role in calculating offshore structures deformations caused by the vortex induced loads. The complexity interaction nature of fluid around the solid geometries pose the difficulties in the analysis, but IFS analysis technique overshadow the challenges. In this paper, Analysis is done by considering a cylindrical member which is similar to the part of offshore platform. The IFS analysis is done by using the commercial package ANSYS 14.0. The Vortex induced loads simulation with IFS is purely a mesh dependent, for that we have to simulate many problems for getting optimum grid size. Computational Fluid Dynamics (CFD) analysis of a two dimensional model have been done and the obtained results were validated with the literature findings. CFD analysis is performed on the extruded version of the two dimensional mesh and the results were compared with the previously obtained two dimensional results. Preliminary IFS analysis is done by coupling the structural and fluid solvers together at smaller time steps and the dynamic response of the structural member to the periodically varying Vortex induced vibrations (VIV) loads were observed and studied.


Interaction of Fluid Structure (IFS), Computational Fluid Dynamics (CFD), Vortex Induced Vibrations (VIV) Introduction (Heading 1)