Day: February 2, 2024

The relationship between inertial and gravitational forces expressed by the Froude number (Fr) is reflected by the changes in surface flows and the formation-decay of stationary (standing) waves. Fr < 1 reflects subcritical (tranquil) flow; Fr>1 supercritical flow. Although the Froude number can be determined experimentally, it can also be eased out of a dimensional analysis of the relevant hydrodynamic variables.

Model dimensions and dimensional analysis

February 2, 2024

The correct scaling of geometric, dynamic, and kinematic system variables is a critical part of

One of my grandfather's model ships - a 3-masted barque

Geological models: An introduction

February 2, 2024

The posts in this series focus on Earth science models, particularly the soft-rock kind. I

A sand-box size analogue model of thrust-fault propagation folds in layered stratigraphy, at 44% horizontal shortening. A new, embryonic thrust is forming at the frontal edge of the “thrust belt”. These experiments, although not fully scaled geometrically or dynamically, retain considerable heuristic value for students. The image was generously provided by Prof. Sandra McLaren, Melbourne University.

Analogue models

February 2, 2024

Analogue models are physical objects; we can touch them and observe represented systems directly. As

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Copyright © 2024 Geological Digression

Copyright © 2024 Geological Digression