Publication Cover
Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 82, 2022 - Issue 3
89
Views
0
CrossRef citations to date
0
Altmetric
Articles

Alternative expression for Boltzmann temperature of dissipative-particle-dynamics particles

, , ORCID Icon, &
Pages 53-69 | Received 31 Jul 2021, Accepted 12 Apr 2022, Published online: 25 Apr 2022
 

Abstract

The coarse graining parameter has been used to determine parameter values of the dissipative particle dynamics (DPD). However, it is known that the self-diffusivity obtained by the DPD simulation reduces with increasing the coarse graining parameter. In this study, an alternative expression for Boltzmann temperature of the DPD particles is proposed. The self-diffusivity and the dynamic viscosity of water were obtained by using the proposed expression for Boltzmann temperature of the DPD particles and the standard weight function. The obtained self-diffusivity was slightly higher than the measured value in the temperature range from 280 K to 330 K, however, it was independent of the coarse graining parameter. The obtained dynamic viscosity agreed well with value obtained by REFPROP in the temperature range from 280 to 370 K.

Acknowledgments

The authors would like to express their appreciation to Takasago Thermal Engineering Co, Ltd., Japan, for providing financial support for this work.

Additional information

Funding

This research was funded by the Takasago education and research grant (Vote No: 4B631).

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.