Abstract
Material point method (MPM) was originally introduced for large deformation problems in solid mechanics applications. Later, it has been successfully applied to solve a wide range of material behaviors. However, previous research has indicated that MPM exhibits numerical instabilities when resolving incompressible flow problems. We study Chorin’ s projection method in MPM algorithm to simulate material incompressibility. Two projection-type schemes, non-incremental projection and incremental projection, are investigated for their accuracy and stability within MPM. Numerical examples show that the non-incremental projection scheme provides stable results in single phase MPM framework. Further, it avoids artificial pressure oscillations and small time steps that are present in the explicit MPM approach.
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Biography: Shyamini Kularathna, Female, Ph. D. Candidate
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Kularathna, S., Soga, K. Comparison of two projection methods for modeling incompressible flows in MPM. J Hydrodyn 29, 405–412 (2017). https://doi.org/10.1016/S1001-6058(16)60750-3
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DOI: https://doi.org/10.1016/S1001-6058(16)60750-3