Raveendran, Karthik ; Wojtan, ChrisIST Austria ; Turk, Greg
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.
33 - 42
SCA: ACM SIGGRAPH/Eurographics Symposium on Computer animation
2011-08-05 – 2011-08-07
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.