Journal
SYMMETRY-BASEL
Volume 10, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/sym10040094
Keywords
fluid simulation; Smoothed Particle Hydrodynamics (SPH); non-Newtonian fluid; boundary handling
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Funding
- National Key Research and Development Program of China [2016YFB0700500]
- National Science Foundation of China [61702036, 61572075]
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In order to simulate fluid-solid boundary interaction for non-Newtonian Smoothed Particle Hydrodynamics (SPH) fluids, we present a steady and realistic fluid-solid boundary handling method using symmetrical interaction forces. Firstly, we use the improved SPH method to model the non-Newtonian fluid. Secondly, the density of boundary particle is created into the calculation of fluid-solid interaction forces. Besides, we apply friction conditions to constrain the fluid particles at the boundary. Finally, we apply the predictive-corrective scheme to correct the density deviation and improve boundary computing efficiency. The experiment confirms the feasibility for the interaction between non-Newtonian fluid and solid objects with this method. At the same time, it reflects the viscous characteristics and ensures the physical properties of non-Newtonian fluid. In addition, compared to existing methods, this method is more stable and easier to implement.
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