#6 H&H Essentials: 1D, 2D and 3D Flow

Australian Water School Understand key differences in 1D, 2D and 3D flow computations

Target Audience

The course is designed to cater for engineers and non-engineers alike, with a range of provided background materials that make the course suitable for both beginners and experienced professionals seeking a refresher for the underlying concepts behind hydrologic and hydraulic modelling applications.


Hydrologic and hydraulic modelling software packages are becoming increasingly powerful, with impressive abilities to run countless iterations and display realistic flood inundation scenarios; however, a basic understanding of the underlying concepts is key in correctly interpreting, applying and presenting results. Working in collaboration with industry and academic experts the Australian Water School (AWS) has created the Hydrology and Hydraulics (H&H) Essentials training series, comprised of 8 individual intensive 3-hour courses with each course flowing into the next enabling attendees to build their skills piece by piece through every course.

This course is part of AWS H&H Essentials series (click here to view the ENTIRE series). Throughout the course attendees will be shown practical working examples, learning hands-on how to use and apply different equation sets, leading to an increased understanding in the effects of the adopted modelling assumptions.

Key Concepts/Topics

  • Mannings equation
  • Navier-Stokes and Saint-Venant equations
  • Courant Number
  • Finite element vs finite difference vs finite volume approaches
  • Implicit vs explicit solutions
  • Boundary conditions and flow transitions

Attendees earn CPD hours/points with professional organisations for at least 5 hours per course.

View next course in the series

Learning Objectives

In this 3-hour intensive training course, attendees will increase their knowledge of the underlying equations governing 1D, 2D and 3D flow estimation and learn:

  • How to select an appropriate modelling approach
  • How to determine whether equation terms can be ignored
  • How to account for vertical variation using depth-averaged results