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Consistent scaling of thermal fluctuations in smoothed dissipative particle dynamics.
J Chem Phys 2009; 130(3):034901JC

Abstract

Dissipative particle dynamics (DPD) as a model of fluid particles suffers from the problem that it has no physical scale associated with the particles. Therefore, a DPD simulation requires an ambiguous fine-tuning of the model parameters with the physical parameters. A corrected version of DPD that does not suffer from this problem is smoothed dissipative particle dynamics (SDPD) [P. Espanol and M. Revenga, Phys. Rev. E 67, 026705 (2003)]. SDPD is, in fact, a version of the well-known smoothed particle hydrodynamics method, albeit with the proper inclusion of thermal fluctuations. Here, we show that SDPD produces the proper scaling of the fluctuations as the resolution of the simulation is varied. This is investigated in two problems: the Brownian motion of a spherical colloidal particle and a polymer molecule in suspension.

Authors+Show Affiliations

Departamento de Fisica Fundamental, UNED, Apartado 60141, 28080 Madrid, Spain.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19173537

Citation

Vázquez-Quesada, Adolfo, et al. "Consistent Scaling of Thermal Fluctuations in Smoothed Dissipative Particle Dynamics." The Journal of Chemical Physics, vol. 130, no. 3, 2009, p. 034901.
Vázquez-Quesada A, Ellero M, Español P. Consistent scaling of thermal fluctuations in smoothed dissipative particle dynamics. J Chem Phys. 2009;130(3):034901.
Vázquez-Quesada, A., Ellero, M., & Español, P. (2009). Consistent scaling of thermal fluctuations in smoothed dissipative particle dynamics. The Journal of Chemical Physics, 130(3), p. 034901. doi:10.1063/1.3050100.
Vázquez-Quesada A, Ellero M, Español P. Consistent Scaling of Thermal Fluctuations in Smoothed Dissipative Particle Dynamics. J Chem Phys. 2009 Jan 21;130(3):034901. PubMed PMID: 19173537.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Consistent scaling of thermal fluctuations in smoothed dissipative particle dynamics. AU - Vázquez-Quesada,Adolfo, AU - Ellero,Marco, AU - Español,Pep, PY - 2009/1/29/entrez PY - 2009/1/29/pubmed PY - 2009/1/29/medline SP - 034901 EP - 034901 JF - The Journal of chemical physics JO - J Chem Phys VL - 130 IS - 3 N2 - Dissipative particle dynamics (DPD) as a model of fluid particles suffers from the problem that it has no physical scale associated with the particles. Therefore, a DPD simulation requires an ambiguous fine-tuning of the model parameters with the physical parameters. A corrected version of DPD that does not suffer from this problem is smoothed dissipative particle dynamics (SDPD) [P. Espanol and M. Revenga, Phys. Rev. E 67, 026705 (2003)]. SDPD is, in fact, a version of the well-known smoothed particle hydrodynamics method, albeit with the proper inclusion of thermal fluctuations. Here, we show that SDPD produces the proper scaling of the fluctuations as the resolution of the simulation is varied. This is investigated in two problems: the Brownian motion of a spherical colloidal particle and a polymer molecule in suspension. SN - 1089-7690 UR - https://www.unboundmedicine.com/medline/citation/19173537/Consistent_scaling_of_thermal_fluctuations_in_smoothed_dissipative_particle_dynamics_ L2 - https://dx.doi.org/10.1063/1.3050100 DB - PRIME DP - Unbound Medicine ER -