TwinSpreader01: Twin disc spreader with rotating parts (inlet of particles directly over the disc).
TwinSpreader02: Twin disc spreader with rigid parts (inlet of particles over the fixed parts).
Get a one year license in the GiD shop or try the one month trial version for free, sending a e-mail to spreaddem@cimne.upc.edu.
What is new...
Fromv2.3.1to v2.3.2 (04-03-2022):
Fixed bug when mirroring the results on the transverse distribution graph.
Transverse distribution exported data now prints the density in kg/ha as well as the index of irregularity.
Improved the format data of exported radial and polar distrubitions.
Fixed bug in h5 data file that sometimes affected the dosing rate.
Number of threads by default set to maximum minus one.
Fromv2.3to v2.3.1 (06-07-2021):
Fixed bug with the initial license check.
Fromv2.2.3to v2.3 (27-02-2021):
Dose of fertilizer calculated in the postprocess is now more accurate since it no longer depends on particle flying time.
Fixed bug on ballistic times that could cause a slight miscalculation on the fertiliser amount registered in the data file.
Several coding improvements to make it slightly faster.
Added the option of computing particle collisions in all the domain instead of only on spreader (not advisable, as it increases considerably the computation time).
Fixed bug with the move check option in Step 1. Now it hides the moving entries when this option is unchecked.
Added a warning message when moving an object in Step 1, if the selected node does not belong to the target object.
Fixed bug when moving an imported inlet with the “densified flow” option activated.
Inlet wall redimensioning, when “densified flow” option is activated. Now it only depends on the mesh size rather than the inlet size.
Contextual help messages updated according to the latest changes.
Enhanced backwards compatibility.
Fromv2.2.2to v2.2.3 (25-10-2020):
Radius and impact velocity of the particles flying out of the domain of the bounding box are now printed in the postprocess.
Fixed bug when importing STL files with the extension in capital letters.
Added the option of stopping the simulation for a specific column width (transverse distribution graph), when statistical convergence criterion has been selected.
Grid parallelization option disabled.
Fromv2.2.1to v2.2.2 (30-10-2019):
Main window resized.
'Save image' and 'Save data' buttons repositioned on 'Spread pattern' and 'Coefficient of variation' windows.
'Measure distance' tool now gives the vector.
Fromv2.2.0to v2.2.1 (10-09-2019):
Shaped inlet can be now imported as a .dxf file.
Customized inlet shape has been added to 'Examples > Geometries' folder.
Fixed bug when moving imported inlets.
Added secure code for project names.
Fromv2.1.0to v2.2.0 (02-04-2019):
Angular and radial distributions available in 'Static spread pattern' window (Step 6).
Mirrored results can be enabled and disabled in postprocess, as well as the distance between discs (Step 6).
Maximum number of processors automatically detected in Step 5.
Normals check on inlets to prevent possible importing errors (inlet should be a planar surface).
Fromv2.0.2to v2.1.0 (16-07-2018):
Shaped inlets can be imported from a .stl file.
Densified flow option added for inlets, so that the behaviour of the flow of particles is closer to the real hopper discharge (experimental).
Spread pattern data can be exported in usable format (.json, .xls, .txt).
Layers rendering options available on the left menu. Now the user can choose the colour, hide layers and change their transparency, both in pre and postprocess.
When 'mirrored results' option is selected in preprocess, the contribution of a single disc can be also generated in Sstep 6.
'Process info' button added in Step 5 to show more details about the simulation process.
Fromv2.0.1to v2.0.2 (23-04-2018):
Warning message informing that the inlet of particles is not capable of generating the specified mass flow is integrated in Step 5 window instead of in a pop-up window (sometimes this window was pushed into the background and the simulation progress was not updated until you pressed OK).
Now, the Y-Axis of the transverse distribution graph represents the proportion of the mean density.
From v2.0.0 to v2.0.1 (10-04-2018):
Fixed bug on the information of a running case displayed in Step 6. The spread pattern is now available at a much earlier stage of the simulation.
From v1.5.4 to v2.0.0 (28-03-2018):
Important simulation time reduction.
Frequency of the results load option added in postprocess results window (Step 6).
Project file size reduction: just first four turns of the disc results saved in high definition.
Added as 'End time criterion' the total disc turns and the inlet stop time in calculation settings window (Step 5).
Fixed bug on the inlet radius entry (Step 3: Inlet) and particle radius size factor entry (Step 6: Results). Sometimes they entered into a loop.
Limit axes can be modified in spread pattern graph in 'Static spread pattern' window (Step 6).
From v1.5.3 to v1.5.4 (25-01-2018):
Impact results option added in calculation settings window (Step 5). Activating this option increases considerably the computation time.
Input variables summary can be saved as a .txt or .csv file in calculation settings window (Step 6).
From v1.5.2 to v1.5.3 (23-01-2018):
Project file size reduction: just first eight turn of the disc results saved in high definition.
Animation speed option added in postprocess results window (Step 6).
From v1.5.1 to v1.5.2 (18-01-2018):
Fixed bug on the calculation of the automatic time step when the angular velocity of the disc is negative and is way above than 800 rpm (default value).
Examples of calculated cases uploaded on the website and deleted on the installation package.
From v1.5.0 to v1.5.1 (10-01-2018):
Fixed bug when ocasionally isolated particles reached the ground well before the rest of the particles.
From v1.4.0 to v1.5.0 (09-01-2018):
Migration to GiD 13.0.3 pre and postprocessor.
New example case integrating rigid parts.
Update of results (coefficient of variation or dynamic spread pattern) in background window if any variable is changed (speed, working width, overlapping configuration) in foreground window.
Deleted the duplicated message box asking to save the project when finish button is pressed.
Warning message requesting confirmation to cancel the running process.
From v1.3.0 to v1.4.0 (19-12-2017):
Fixed bug in inlet velocity vector and rotation axis when deleting inlet or discs geometry repeatedly (just when working in model units different from meters).
Saving transverse distribution graphs now takes into account the width of the bins.
New 'Capture settings' option in the side menu, allowing the assignment of some properties of the snapshots (size, transparency, background colour, etc.).
New 'Print snapshot' option in the side menu.
Background colour option added in postprocess results window (Step 6), also applied when recording animations. White and dark backgrounds are allowed.
Background colour option added in preprocess, included in 'Capture settings' new feature. White and default coloured backgrounds are allowed.
Updated automatic spinbox intervals when changing units.
From v1.2.0 to v1.3.0 (13-12-2017):
Fixed bugs in rendering options and background colours.
Improvements in generating inlets of particles over an existing disc.
Improvements in the calculation of the automatic time step.
Improvements in the processing of data for transverse distribution diagram.
Warning dialog box when entering identical coordinates for the initial and final node defining the rotation axis.
From v1.1.0 to v1.2.0 (05-12-2017):
Fixed error with the motion of rotating bodies when working in model units different from meters.