manual de ventsim en español Ventsim Visual™ User Guide This manual presents a guide to the effective use of Ventsim Visual™ ventilation software. Ventsim SoftwareVentsim Visual™ Standard, Advanced and Premium Versions ( Version 1 MBI Drilling – Presentación Principal-Español This manual presents a guide to the effective use of Ventsim Visual™ ventilation software for mine. (Español) Webinar: Descubre las mejoras en VentSim DESIGN V Sorry, this entry Are you still generating the curve of your fan manually? This is a thing of.
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Has the drive or airway been filled with backfill or other blockages?
Tutorial: Validating Your Ventsim™ Model
Chasm Consulting introduces a new software package to help manage recording underground measure ventilation information. Unfortunately the airway sizes, friction factors, shock losses and fan performances are often not exactly known and can be difficult or time consuming to measure in some areas. The notes can then be compared side-by-side with the simulated results, showing any discrepancies.
Some tips on creating accurate models: Funnily enough, engineers who do not consider over-break from design sizes, also forget to consider shock losses, and the effect somewhat cancel each other out across the model — but not always in the correct places.
Recirculation can be defined as any portion of mine airflow that travels through the same area more than once. Without an accurate representation of current conditions, future design using the model will not be accurate and could provide misleading or incorrect results. Custom Expaol are a great way to more clearly show ventilation infrastructure icons or equipment within your ventilation model.
The tedious job of accurately entering fan curve data has been solved. Provided the simulation is performing without errors or warnings, it is almost certainly simply returning the results of the input data placed within the model. One of the most critical requirements of a Ventsim model is that it accurately represents the ventilation conditions in your mine. Each major ventilation assumption resistance, friction factor, airway size, fan curve, shock losses, simulation settings such as compressible flows vengsim surface temperatures and barometric pressures needs to be reviewed for accuracy.
For this reason, validating your model with current actual ventilation data and conditions is very important. Some parts of the mine may require a physical inspection — is the fan running? These can be used to derive friction factors which can then be applied to other similar airways, and are probably better than using standard default friction factors. More often than not, a major factor or item has been missed in the model simulation, and once resolved the simulation will perform as expected.
Work backwards from the main airflows to the surface and try to discover the discrepancy between the data put into the ventwim such as airway sizes, frictions factors, regulators or doors, fans etcand the actual data of the mine.
At other times, equipment moving about, doors opening or manial, and other temporary mine disturbances can effect airflow measurements. Your browser does not support the video tag.
This simulation differs from the normal ‘steady state’ contaminant and gas simulations in that ventilation models can show contamination progress and concentration at any time.
This will show discrepancies in design sizes and airway locations that may warrant further investigation. Is the door or regulator open or close? Mznual all simulation parameters and settings are accurate.
Tutorials – Ventsim – 3D Mine Ventilation Simulation Software
Accuracy represents the difference between modelled airflows and pressures, and the actual measured airflows and pressures.
A model that is to be used to predict future expensive infrastructure and fans should target a higher accuracy than perhaps a long term life of mine draft. There is no correct answer, but every engineer and consultant should have a target to aim for based on what the model ventsij required for.
This step espaop a systematic audit or all information used and will be covered in more detail in a future article. For that reason, engineers will often use standard design sizes and default friction factors and shock losses to design a model. Dynamic Contaminants offer a way to simulate the second-by-second spread of a contaminant through a mine.
If the mine is ventsom to have a strong natural ventilation pressure presence, then this will need to be included in the model. Recirculated air has a number of undesirable and possibly dangerous consequences.