Work

Effect of carrier concentration on rheological behavior of high density PCM slurry

Year: 2025

Type: article

Abstract: Erythritol slurry has demonstrated significant potential as a heat transfer medium. This study focused on the changes in the density difference between dispersed particles and carrier fluid by varying the concentration of carrier fluid. To estimate the density difference, the density of carrier fluid, an erythritol aqueous solution, was measured at various temperatures and concentrations using a hydrometer. The pressure drop of erythritol slurry was measured in horizontal homogeneous flow. The results indicated that the non-Newtonian characteristics is pronounced as the carrier concentration decreases, particularly under high solid fraction conditions. Moreover, the particle Reynolds number was proposed as a parameter for evaluating the non-Newtonian characteristics of erythritol slurry. A correlation was developed between the power-law index n′, solid fraction and particle Reynolds number. The calculated values showed good agreement with the experimental values of n', with nearly all values within ±10%.

Source: Experimental Thermal and Fluid Science

DOI: 10.1016/j.expthermflusci.2025.111429

Authors: Hikaru Ebihara, Shunsuke Abe, Tatsunori Asaoka

Institution: Shinshu University

Language: English

Topic: Rheology and Fluid Dynamics Studies

Subfield: Fluid Flow and Transfer Processes

Field: Chemical Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,720

Funder: Japan Society for the Promotion of Science