Kingsley Hortin

Hi Fred, If you choose "Inherit" from the File menu, you can select the settings to inherit from another project. Most settings are available to inherit and will come across but not all. For example, the settings for "Dynamic Scripts / VentLog" do not get inherited. Regards, Kingsley

Hi There, For me, I haven't noticed anything different with the latest update, but the clip level function seemed to change from Version 5.4.4.3 onwards. Prior to Version 5.4.4.3 if you right clicked and selected "Clip Level" and then clicked on an airway, all airways 10m above and below in a horizontal plane would be shown. After Version 5.4.4.3, selecting "Clip Level" and then clicking on an airway will display the airways included in that range defined in the Levels table. Therefore, if you haven't defined specific levels (default is a single level ALL with min to max range of -25000 to +25000), selecting an airway with "Clip Level" will show all airways. The only time it won't is, as you stated, if you drag a box using the clip level function but that sometimes does leave out airways. Therefore, I have found that I have needed to create a list of levels (Tools menu -> Level Elevations) for every model that I am working on now so that I can use the Clip Level function effectively. However, what I also found is that you must ensure to remove the ALL range from the list. If you look at the first picture below, the ALL range is still included. Even if the levels have been additionally defined as shown, using the "Clip Level" function will still show all airways. You must remove that range as shown in the second picture. Regards, Kingsley

Hi Martin, Thanks so much for the reply. However, when importing, I am actually splitting the layers by name not by colour and as a result the "Create P/S Layers" is not available. See below. Interestingly, and maybe this will help solve what's going on, I have this issue when converting centrelines after importing these references into the existing model (not created by me). Yet, when I import the references into a new Ventsim model and convert centrelines, I don't get the response box regarding Primary and Secondary layers. Regards, Kingsley

Hi There, Every time I convert centrelines now I get the below response box. Is there a way of turning this box off? Thanks! Kingsley

Hi Ventsim Team, When I select Copy Hi-Res from the View menu and then paste the picture into a document or PowerPoint, the orientation arrows show correctly, but the letters of those arrows are displaced. See picture below. Regards, Kingsley

Hi Adrian, Whilst not an answer to your query, the below link is applicable to the potential for such incidents. https://www.northernontariobusiness.com/industry-news/mining/underground-electric-vehicle-fire-provides-teaching-moment-for-sudbury-miner-3282728

That's really helpful. Good job Ventsim team and thanks to Kevin for articulating a frustration that has arisen for me at times.

Hi Martin, Thanks for your response regarding the calculation for orifice area. That's given me something to think about. With regards to the picture of the Regulator Resistance, I accidently added that picture when I made the post. However, when I went back to edit my post, I found I couldn't delete the picture. With that said, thanks for the extra info regarding the Regulator Resistance option!

Hi Ventsim Team, I have a couple of queries with respect to orifices/regulators, mainly just to make things clear in my mind. When I fix a flow through an airway requiring a restriction, the resultant returns an Equivalent Orifice area. For instance in the example below, to achieve 65 m³/s, an equivalent orifice of 3.6 m² is defined as being required. Am I right in my understanding that this is area represents a round opening? If so, then the hydraulic diameter is 2.14 m. Yet, if I am using this to estimate the size of a rectangular opening (for example to represent a drop board regulator), then this area would seem to be underestimated. For a opening width of say, 3 metres, an area of 5.0 m² would be required to retain the 2.14 m hydraulic diameter. If the width of the opening is 4 metres, an area of 5.8 m² would be required to retain the 2.14 m hydraulic diameter. Am I looking at this the right way, or am I misunderstanding something?

I have noted that when I inherit layers (Primary, Secondary and Air Type) that whilst the names of the layers are brought across from one model to the next, the colours do not get translated across. For my particular application at the moment, this is important to maintain consistency across models. As an interim workaround, I tried to copy the colours (or at the least the colour attributes such as red, green and blue colour code numbers) but have been having troubles with that as well. Once a colour has been selected in a model, I do not seem to be able to interrogate the colour attributes. As an example, if you note the diagram below, the first layer “Main Shaft” has a sort of teal colour applied to it. Yet, if I click the cursor on the colour, it shows black attributes.

Thanks so much for taking care of that!!

Hi There, Having downloaded the latest version of Ventsim, I find that on my laptop (no problem when I view this on a large monitor) I am having troubles seeing the bottom part of a fan curve when selecting a fan using the Edit tool. See below screen capture. As you can see, there doesn't seem to be a way to scroll down to view the whole curve. Regards, Kingsley