Hybrid smoothed particle hydrodynamics

K. Raveendran, C.J. Wojtan, G. Turk, in:, S. Spencer (Ed.), ACM, 2011, pp. 33–42.

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Conference Paper | Published | English
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Abstract
We present a new algorithm for enforcing incompressibility for Smoothed Particle Hydrodynamics (SPH) by preserving uniform density across the domain. We propose a hybrid method that uses a Poisson solve on a coarse grid to enforce a divergence free velocity field, followed by a local density correction of the particles. This avoids typical grid artifacts and maintains the Lagrangian nature of SPH by directly transferring pressures onto particles. Our method can be easily integrated with existing SPH techniques such as the incompressible PCISPH method as well as weakly compressible SPH by adding an additional force term. We show that this hybrid method accelerates convergence towards uniform density and permits a significantly larger time step compared to earlier approaches while producing similar results. We demonstrate our approach in a variety of scenarios with significant pressure gradients such as splashing liquids.
Publishing Year
Date Published
2011-08-05
Page
33 - 42
Conference
SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation
Conference Location
Vancouver, Canada
Conference Date
2011-08-05 – 2011-08-07
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Raveendran K, Wojtan CJ, Turk G. Hybrid smoothed particle hydrodynamics. In: Spencer S, ed. ACM; 2011:33-42. doi:10.1145/2019406.2019411
Raveendran, K., Wojtan, C. J., & Turk, G. (2011). Hybrid smoothed particle hydrodynamics. In S. Spencer (Ed.) (pp. 33–42). Presented at the SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation, Vancouver, Canada: ACM. https://doi.org/10.1145/2019406.2019411
Raveendran, Karthik, Christopher J Wojtan, and Greg Turk. “Hybrid Smoothed Particle Hydrodynamics.” edited by Stephen Spencer, 33–42. ACM, 2011. https://doi.org/10.1145/2019406.2019411.
K. Raveendran, C. J. Wojtan, and G. Turk, “Hybrid smoothed particle hydrodynamics,” presented at the SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation, Vancouver, Canada, 2011, pp. 33–42.
Raveendran K, Wojtan CJ, Turk G. 2011. Hybrid smoothed particle hydrodynamics. SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation 33–42.
Raveendran, Karthik, et al. Hybrid Smoothed Particle Hydrodynamics. Edited by Stephen Spencer, ACM, 2011, pp. 33–42, doi:10.1145/2019406.2019411.
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