= Dynamic similarity (Reynolds and Womersley numbers)
{wiki=Dynamic_similarity_(Reynolds_and_Womersley_numbers)}
Dynamic similarity is a concept used in fluid mechanics to compare different flow situations. It occurs when two or more flow systems exhibit the same behavior under similar conditions, which can be characterized by dimensionless numbers. In particular, the Reynolds number and the Womersley number are two important dimensionless parameters used to analyze fluid flow in different contexts such as in biomedical applications (e.g., blood flow in arteries) and engineering (e.g., behavior of different types of fluids in pipes).
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