Application Exchange

Classic DLVO Equivalent Sphere in COMSOL: Derjaguin Approximation

Allan Gomez, Chonbuk National University
Email:

The interaction energies of colloids according to Classic DLVO based on the Derjaguin Approximation. The Classic DLVO consists of the non-retarded Attractive van der Waals interaction and the Repulsive electrostatic interaction energies. The equations are for a Sphere-Plate configuration and constant surface potential. The constant surface potential includes to models: one based on Hogg et al and other based on the Linear Superposition Approximation (LSA). It assumes an equivalent sphere for simplicity. The equations are broadly used in colloid science. Made in COMSOL 5.5.
REFS:
*Elimelech, Menachem, John Gregory, and Xiadong Jia. Particle deposition and aggregation: measurement, modelling and simulation. Butterworth-Heinemann, 2013.
*Hogg, R. T. W. D. W., To Wo Healy, and D. W. Fuerstenau. "Mutual coagulation of colloidal dispersions." Transactions of the Faraday Society 62 (1966): 1638-1651.
*Bhattacharjee, Subir, and Menachem Elimelech. "Surface element integration: a novel technique for evaluation of DLVO interaction between a particle and a flat plate." Journal of colloid and interface science 193, no. 2 (1997): 273-285.
*Gomez-Flores, Allan, Scott A. Bradford, Lei Wu, and Hyunjung Kim. "Interaction energies for hollow and solid cylinders: Role of aspect ratio and particle orientation." Colloids and Surfaces A: Physicochemical and Engineering Aspects 580 (2019): 123781.

User Comments

Login to comment on this entry.