1. High Reynolds number flows are characterised by their slow rates of mixing and 'reversibility'. 2. Gravity waves have a lower Bond number than capillary waves. 3. When creating a small-scale model of a large prototype, you can only match both the Reynolds number and Froude number if the fluid in the model is different from that in the prototype. 4. A hydraulic jump is a mechanism for a flow to transition from a low Froude number to a high Froude number. 5. You create a dynamically similar model to estimate the drag force on a submerged aquatic organism in the ocean (such as a fish). If salt water is used in the model too, then the drag force on the prototype will equal that on the model. 6. The Reynolds number of the Swan River model is the same as that of the real Swan River.

Q: How about discussing the principles of data analysis and modeling?

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Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.