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Simulation of fluid flow in a body-fitted grid system using the lattice Boltzmann method
1Center of Excellence for Design and Simulation of Space Systems, Faculty of Aerospace Engineering, K.N. Toosi University of Technology, Tehran, Iran. Mirzaei@kntu.ac.ir
Summary
A new method combines the interpolation supplemented lattice Boltzmann method (ISLBM) with Joukowski transformation. This approach overcomes ISLBM limitations for simulating fluid flow around complex geometries using body-fitted grids.
Area of Science:
- Computational Fluid Dynamics
- Numerical Methods
Background:
- The interpolation supplemented lattice Boltzmann method (ISLBM) has limitations in simulating fluid flow around complex geometries.
- Applying ISLBM to body-filled grid systems is challenging.
Purpose of the Study:
- To develop an improved ISLBM to address its limitations.
- To enable ISLBM application in body-fitted grid systems for complex geometries.
Main Methods:
- A novel method combining ISLBM with Joukowski transformation was developed.
- Joukowski transformation maps physical domains with body-fitted grids to computational domains with uniform Cartesian grids.
- This transformation allows for the straightforward application of the conventional ISLBM.
Main Results:
- The developed method effectively simulates fluid flow around complex geometries.
- The approach successfully integrates ISLBM with body-fitted grid systems.
- Results show good agreement when compared to a Navier-Stokes solver.
Conclusions:
- The proposed ISLBM combined with Joukowski transformation overcomes the limitations of the original ISLBM.
- This enhanced method is suitable for fluid flow simulations in complex geometries using body-fitted grids.
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