If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is φs is defined by________________?
Correct answer: A. φs = 6 Vp/dpsp
- A. φs = 6 Vp/dpsp
- B. φs = Vp/dpsp
- C. φs = 6 dpSp/Vp
- D. φs = dpSp/Vp
Explanation
Sphericity compares the surface area of a volume-equivalent sphere, πd_p², with the actual particle area S_p. Since V_p = πd_p³/6, this gives φ_s = 6V_p/(d_pS_p).
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