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Classic DLVO Equivalent Sphere in COMSOL: Derjaguin Approximation

Allan Gomez, Chonbuk National University

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.
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*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.

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