Keller - Cavitation Criterion

Minimum blade-area ratio A_E/A_0 to avoid cavitation per Keller formula - the screening calculation for propeller sizing given thrust and shaft depth.

CavitationKellerPropeller

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

A_E/A_0 \geq \frac{(1.3 + 0.3Z)T}{(p_0 - p_v)D^2} + K

Symbol	Meaning	Unit
$T$	Thrust	N
$D$	Propeller diameter	m
$p_0 - p_v$	Atmospheric + hydrostatic − vapour pressure	Pa
$K$	Keller constant

Source: Keller J. - RINA 1966

In short

Minimum blade-area ratio A_E/A_0 to avoid cavitation per Keller formula - the screening calculation for propeller sizing given thrust and shaft depth.

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