Category Archives: numerical

infos for professional data-tamers like us

The capacitor problem

Hi, here is how I managed to solve the “capacitor problem”, i.e. how I would try to transform a small system of (linear) capacitors in something more similar to a lake characterized by his (non-linear) storage capacity curve. As explained … Continue reading

Posted in numerical | Leave a comment

Wall effect on Lift and Drag Forces

A short discussion on lateral wall effect on Lift/Drag Forces on a rigid body in a flow. And a question, too. Based on my knowledge, forces on rigid bodies in a flow stream are given for an undefined flow field, … Continue reading

Posted in hydro, Matlab, numerical | 3 Comments

Venice as a RC-circuit

After sharing with my public my funny ideas about an electric-analogical model of the Venice lagoon, I can now proudly show you the first results: using this tool I could make the first essays. It was kindly published by Israel … Continue reading

Posted in numerical | 2 Comments

Electric lagoon

This is not a post, this is a call: a call for help. Long time ago I thought about modelling the Venice lagoon in a different way. You know, there are already many kinds of models, conceived for a better … Continue reading

Posted in numerical | Leave a comment

Water quality model: a case study

My experience in water quality modelling is quite limited: just an application on marine dispersion based on bidimensional grid but with only one quality variable in it, a generic “pollutant” relative concentration. Really barbaric, in some way, but effective too: … Continue reading

Posted in documents, numerical | 3 Comments

Glacier Bay Tidal Modeling

Researchers in the Department of Civil and Environmental Engineering at the Pennsylvania State University released their Glacier Bay project page, which an be found at http://www.engr.psu.edu/ce/hydro/hill/research/glba/default.stm. The modeling was done using ADCIRC. The project page is a good source of … Continue reading

Posted in hydro, numerical | Leave a comment

ETA atmospheric model

Eta Model is an atmospheric (meteorological forecasting) model developed in seventies and eighties years (by Mesinger & Janjic: Mesinger, F., and Z. I. Janjic, 1974: Noise due to time-dependent boundary conditions in limited area models. The GARP Programme on Numerical … Continue reading

Posted in hydro, numerical | Leave a comment

Navier-Stokes on matlab (reprise): ifiss 2.2

Follow this link to a useful (and free) matlab code that is basically a PDE solver adapted to common problems like diffusion, convection-diffusion, Stokes flow and Navier-Stokes flow problems (incompressible fluid dynamics). I am talking about ifiss2.2 or Incompressible Flow … Continue reading

Posted in hydro, Matlab, numerical | 1 Comment

2-D unstructured mesh Matlab generator

MESH2D is a toolbox for the generation and manipulation of unstructured triangular meshes in MATLAB. High quality meshes can be generated automatically for user defined geometries. These meshes are suitable for subsequent Finite Element Method or Finite Volume Method analysis. … Continue reading

Posted in hydro, Matlab, numerical | 1 Comment

2-D Navier-Stokes equations Matlab solver

I am pretty sure that any hydraulic engineer wants to have a code for integrating Navier-Stokes equations over a complex domain. Fortunately there are some cool guys who share their work.This is what Navier-Stokes Solver (Navier2d) is: a Matlab solver … Continue reading

Posted in hydro, Matlab, numerical | 1 Comment