dynamic similarity

American  

noun

1. a principle whereby model airplanes, ships, and hydraulic structures are operated for test purposes under conditions exactly simulating full-scale performance.

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Example Sentences

The Reynolds law of dynamic similarity or Reynolds similitude, states that if two fluids flow around similar structures with different length scales, they are hydrodynamically identical provided they exhibit the same Reynolds number.

From Science Daily

Such likeness may be called syntechnic resemblance, incidentally produced by dynamic similarity, just as syncryptic resemblance is produced by static similarity.

From Project Gutenberg