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THE CALCULATORS

Equivalent Diameter Calculation (Surface Basis)

Calculates the surface-equivalent diameter of an irregular particle by determining the diameter of a sphere with the same total surface area.

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1. Define Input Parameters

2. Engineering Output

Surface-Equivalent Diameter (d_S)
- mm

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Context & Assumptions

This calculation is used in process engineering to characterize irregular particles for fluid flow and heat transfer models. It provides a simplified geometric parameter essential for analyzing systems where surface-dependent processes, such as drying or catalytic reactions, are dominant.

Understand the Engineering Principles

Review the step-by-step derivations, typical industrial limits, and scale-up rules.

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