Horizontal grit chamber checking software

Submitted by Nicola Rainiero on 2012-09-25

Simple programm written in a QuickBasic language and compiled in FreeBASIC, which allows you to verify an horizontal grit chamber. Once you have put the geometric section and the incoming flow, it computes using elementary formulation the shorter length of this hydraulic device.

The horizontal_grit_chamber.bas bases itself on the previous article: Horizontal grit chamber: theory. It can not be considered a correct and rigouros method to design these devices, but an help to verify the assumptions made during the plan phase.

The program with source code and binaries (compiled for Windows XP and Ubuntu 12.04) is available here: horizontal_grit_chamber.zip

Example

Input data:

  • Q = 31 l/s (flow rate coming in);
  • B = 1.25 m (width of useful sedimentation volume);
  • H = 1.00 m (height of useful sedimentation volume, shorter than the real one);
  • Ltot = 1.80 m (total length of the chamber, verified only if the program outputs a smaller value).

The screen results of the program:

Hydraulic data Check of the average horizontal speed in the section Diameter and specific weight of the particle
Hydraulic data Check of the average horizontal speed in the section
Diameter and specific weight of the particle
Iterative calculation of the coefficient CD First length of useful sedimentation volume Computation of the length comparing to the time of distance covered
Iterative calculation of the coefficient CD First length of useful sedimentation volume
(according to the drop time of the particle)
Computation of the length comparing to the time of distance covered
(the device is verified, because the total length is longer than 1.62 m)



Related Content:

Nicola Rainiero

A civil geotechnical engineer with the ambition to facilitate own work with free software for a knowledge and collective sharing. Also, I deal with green energy and in particular shallow geothermal energy. I have always been involved in web design and 3D modelling.

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