A Highly Scalable Sharp-Interface Immersed Boundary Method for Large-Scale Parallel Computers

2017 ◽  
Author(s):  
Chi Zhu ◽  
Jung Hee Seo ◽  
Vijay Vedula ◽  
Rajat Mittal
Keyword(s):  
Immersed Boundary Method ◽  
Large Scale ◽  
Parallel Computers ◽  
Sharp Interface ◽  
Immersed Boundary ◽  
Boundary Method

Role of solution reconstruction in hypersonic viscous computations using a sharp interface immersed boundary method

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Shuvayan Brahmachary ◽  
Ganesh Natarajan ◽  
Vinayak Kulkarni ◽  
Niranjan Sahoo ◽  
V. Ashok ◽  
...  
Keyword(s):  
Immersed Boundary Method ◽  
Sharp Interface ◽  
Immersed Boundary ◽  
Boundary Method

Multi-Scale Modeling of Wind-Wave Interaction in the Presence of Offshore Structures for Renewable Energy Applications

2010 ◽  
Author(s):  
Yi Liu ◽  
Di Yang ◽  
Xin Guo ◽  
Lian Shen
Keyword(s):  
Immersed Boundary Method ◽  
Large Scale ◽  
Wind Wave ◽  
Offshore Structures ◽  
Local Scale ◽  
Immersed Boundary ◽  
Multi Scale ◽  
Scale Modeling ◽  
Boundary Method ◽  
Multi Scale Modeling

We develop a multi-scale modeling capability for the simulation of wind and wave coupling dynamics, with a focus on providing environmental input for wind and wave loads on offshore structures. For the large-scale wind–wave environment, large-eddy simulation for the wind turbulence and high-order spectral simulation for the nonlinear ocean waves are dynamically coupled. For the local-scale air and water flows past the structure, we use a hybrid interface capturing and immersed boundary method. Coupled level-set/volume-of-fluid/ghost-fluid method is used to capture the wave surface. Immersed boundary method is used to represent the structure. The large-scale wind–wave simulation provides inflow boundary conditions for the local-scale air–water–structure simulation. Our simulation captures the dynamic evolution of ocean nonlinear wavefield under the wind action. The wind field is found to be strongly coupled with the surface waves and the wind load on a surface-piercing object is largely wave-phase dependent.

Study of Fluid Structure Interaction Using Sharp Interface Immersed Boundary Method

2016 ◽  
Author(s):  
Long He ◽  
Keyur Joshi ◽  
Danesh Tafti
Keyword(s):  
Immersed Boundary Method ◽  
Fluid Structure Interaction ◽  
Linear Structure ◽  
Current Approach ◽  
Sharp Interface ◽  
Immersed Boundary ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Boundary Method ◽  
Coupling Algorithms

In this work, we present an approach for solving fluid structure interaction problems by combining a non-linear structure solver with an incompressible fluid solver using immersed boundary method. The implementation of the sharp-interface immersed boundary method with the fluid solver is described. A structure solver with the ability to handle geometric nonlinearly is developed and tested with benchmark cases. The partitioned fluid-structure coupling algorithm with the strategy of enforcing boundary conditions at the fluid/structure interaction is given in detail. The fully coupled FSI approach is tested with the Turek and Hron fluid-structure interaction benchmark case. Both strong coupling and weak coupling algorithms are examined. Predictions from the current approach show good agreement with the results reported by other researchers.

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