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4 cards from this section. Quick, good the night before a test.
Define Reynolds shear stress.
Think about its relationship to average velocities.
What is the significance of Kolmogorov length scale in turbulence?
Consider its relation to grid size.
What does Reynolds shear stress represent in fluid dynamics?
Focus on its definition in turbulence modeling.
True or False: The Kolmogorov length scale is the largest scale of turbulence.
Recall the definition of Kolmogorov scale.
Given a turbulent flow with a Reynolds number of 10^5, calculate how many grid points would be required based on the relation derived (Re^9/4). Discuss feasibility in terms of computational power.
Consider the implications of needing such a large number of grid points.
Develop a method for optimizing grid size in a DNS simulation of a turbulent flow where computational resources are limited. Outline your strategy.
Think about adapting grid sizes based on observed turbulence characteristics.
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