Coanda Effect — FRCA Primary MCQ
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Correct answer: D — The tendency of a fluid jet to follow a nearby curved surface
The Coanda effect describes the tendency of a fluid jet to adhere to and follow a nearby curved surface rather than continuing in a straight line. It is relevant to fluidic ventilators (which use no moving parts) and may contribute to the preferential ventilation of one lung during jet ventilation. It is named after Romanian inventor Henri Coandă.
Reference: Al-Shaikh Stacey 2019 Essentials of Anaesthetic Equipment