[Music] hello and welcome to this short video focusing on some of the river and overland flow improvements delivered with 2021.1 of infoworks icm the first thing i wanted to talk about is clip meshing so with the previous full release of infoworks icm there was a new meshing procedure introduced as a prototype feature and in this model we have a 1d area to the northeast we have a river reach that goes from north to south and then a 2d zone which is represented by this dark area in the middle of the network if i zoom in we can see that 2d zone and what we had with the previous version of infoworks icm is a new mesh generation field which wasn't there before and for this mesh generation we had the option for classic that's the same meshing approach that's been in infoworks icm since its release and clip meshing which was introduced as prototype and the intention is to release this with 2021.1 as the default meshing procedure now in this particular network i have two scenarios one which is classic meshing and one which is clip meshing and you'll see the different selections here for mesh generation the reason the classic meshing has a blank entry is because this is a model that was carried forward from a previous version of infoworks icm and so the default behavior for those is to maintain the meshing procedure as it was before in this case a blank meshing generation is interpreted as a classic meshing generation selection and that's just to be able to provide consistent results and mesh results across versions any new 2d zones that are created will automatically have the clip meshing set what i want to do as part of this video is to show some of the performance of this so i will select the 2d zone with the classic meshing so the blank entry here go to model meshing mesh 2d zones and start that job going at the same time i will switch across to my clip meshing and in here go to model meshing mesh 2d zones also start that meshing procedure and what you might notice is that the status fields here have some slightly different entries because the clip meshing goes through different intersection states compared to the classic meshing and really what i'm looking to show here is the difference in performance for a network of this size in terms of the mesh elements that are generated and the time that it takes to generate that mesh in the first instance so we'll wait for these to complete and we can see that the mesh is ready for that 2d zone for the clip meshing approach so i will load this in and one of the things that i wanted to show here is a that that classic meshing for the same job and this is roughly a 400 000 mesh element network is still in progress and b that the meshing gives slightly different outputs so what i've done here is highlighted the internal element areas where we've had aggregation of triangles and we can see that there is a real focus around some of the building geometry some of the more complex geometry here and that's what we would expect to see and this is where aggregation has occurred or the boundaries of those particular polygons have been respected by the clip meshing approach and in some cases that is then also impacted on the surrounding elements and we can see that just now that classic meshing has completed so far faster with the new and improved clip meshing released with 2021.1 of infoworks icm the second feature i wanted to show is around the ability to drain from a sub catchment to a 2d point source so if i open this model group and then open my network one of the things that's being introduced with version 20 21.1 is that sub catchments i have one selected here now have additional options for the drains too so previously we had links we had nodes we had sub catchments and multiple links for the ability to drain sub catchments too we've now added an additional option here which is a 2d point source and as you can see here we have a sub catchment that's draining to this particular object that's a point object if i double click on this we can see that of the type 2d point source and that means we no longer have to route our sub catchment runoff into a 1d system before it's then able to connect to the 2d surface and this is particularly applicable for perhaps buildings that have gutters that run down to pavement surfaces or road surfaces rather than directly into the sewer system and i have a run result here just to show the outputs i'll drag this theme on maximize this and then play through the simulation and we can see here that the sub catchment is entirely draining to that point and there's no 1d representation whatsoever in this network but we are able to represent these flows onto the surface and where they then move to so that's the second feature i wanted to show in this third section i'd like to speak a bit about extending cross-section lines so i have a network here and looking at this network we can see a number of cross sections in the blue some river reach links which are these links between the outflow and the break nodes if i drag a ground model onto this we can see that this is the depression in the ground model where the river channel is and what i can do now which wasn't available previously is to select these cross section lines and then go to model geometry and ext extend cross sections now in this extend cross sections dialog at the moment i only have the ability to extend either to the left or to the right of those cross sections and i can go beyond the current endpoints i've got 500 meters to the left side and 300 meters to the right side at the moment and at the same time i can then choose to populate the extensions from grand model at vertices on a 20 meter scale in this instance so if i press ok here we can see that two cross-section lines have been extended and that we've inserted vertices every 20 meters and we've updated from the ground model if i close this dialog and now look at these cross sections we can see that they are much longer than they were before if i press the undo button we can see the difference the other thing that we can see is if i go into one of these cross sections and look at the section data we have the original cross section with much denser survey points in the middle here and then we can see the 20 meter spread across the different vertex points beyond the extensions of those cross sections and these have been populated from the ground model that's active inside the network now there are other options that we can have here so i could select a couple of additional cross sections and a bank line along with these and if i go to the same menu option for geometry extend cross sections we can now see that we both the second and the third radio buttons become available the second one is to extend by distances to the selected bank lines and the third one is to extend beyond those bank lines so if i select the second option and now press ok what we'll see is that there is a similar log that tells us what's happened on the different sides of these cross sections and what's happened here is that on one side we've extended by the meterage that was defined and we've hit the bank that's been selected and so the cross section has been extended to that bank line on the other side because i never selected the bank line the the cross section didn't get extended so if i go backwards and forwards we can see that here we've extended to the selected bank line but not to the one that was not selected now finally if i have that same selection again and this time go to model and geometry extend cross sections and select the third option this one will disregard bank lines as being required in order to stop the extension so if i press ok here and go back to my network we can see that we've hit the bank line on this side and we've stopped there as we did in the previous scenario but this time there is no requirement to hit a bank before the extension happens so on the other side of this river reach we've actually extended beyond the bank line that was not selected okay i'd now like to go on to the fourth topic which is around straightening lines if i open this network then what we'll see here is that we have the same cross-sections that we had before and what we were trying to show here is that in addition to the ability to extend cross sections i can select line objects and i can go to model geometry and there is now a straight and selected lines this does not just apply to cross-section lines that are priced to all line objects inside infoworks icm if i select this i can told that two of the lines have been straightened so line seven and line eight and we can see that rather than having the kings and they had previously these are now straight in line so if i undo that i can see that that was the original geometry for the line this is now the straightened geometry for the line the other thing that we can do is select lines as well as link objects and go to the same option which is geometry straight and selected lines and this time because it detects that we have lines intersecting link objects there is an option to do the straightening perpendicular to the selected link if i select this and press ok it will now tell me that two lines have been straightened as they were previously but in this case we're seeing that the lines are now perpendicular to the link that has been selected again if i step backwards and forward we can see the difference in the straightening there okay this next topic is around the minimum depth for flood theme displays so in infoworks icm we have the ability to display what's called a flood theme and that will take a 2d result level and it will compare that 2d result level with the underlying ground model that is in the geoplan so on screen here we have the ground model displayed and on this we have 2d elements with level results now as those 2d elements were averaged from the ground model some of them will be above and some of them will be low the ground model values when they're above then the issue that was previously encountered was that a minimal depth on the 2d zone was enough to show the flood theme all over the mesh where that situation was encountered so if i go to the maximum results here this is the previous expected result for a rainfall on mesh overlaid onto a dtm so we can see anywhere where we have this light blue we had rainfall on the mesh and the ground level for the dtm was below the mesh element level anywhere where it's perhaps brown was where the average element level was below the dtm now one thing we've introduced here is if you go to properties and themes and scroll down to the flood theme we now have the ability to exclude any 2d depths on the 2d results below a minimum value so if i put 0.15 here which means less than 15 centimeters depth on the 2d zone will be excluded from the flood theme then immediately we'll see that those minimal depths are removed and we still get the contoured flood result theme that some people might desire as an output for their flood maps i'd like to speak a little bit about 3d view so we've made some improvements to the 3d view which gives users much more flexibility in terms of how we display flood depths so what i'll do here is open up a workspace this is a 2d model you can see the 2d mesh if i go into the 3d view for this model then what we will see is a 3d representation of the flooding that's happened at the surface this is the original view that's been in infraworks icm since the 3d view was first introduced alongside this we've now got additional options so if i right click and go to properties we can now see that we have a 2d zone render box here and that's currently set to the radio button for original but we now also have a smooth option along with translucent water and graded water level transition so if i use these settings and use a smooth profile that will smooth the edges of the triangles to give a much smoother boundary to the flooding and the translucent water will display that flooding in a translucent fashion similar to what's seen now and the graded watch level transition will have a gradual transition from one depth to the other rather than the boundaries that we see between the different depths with the current view that's there so if i okay this we can see that we have smooth transitions from the high depths to the lower depths and at the edges we no longer have the individual triangle representation that was there in the original view but rather a smoothed profile at the edge of flooding areas now if i go back in here and switch off the translucent then in this situation the water levels become much more prevalent they're not translucent the background layer can't be seen in the same fashion and if i take the graded watch level transition off then what we'll see now is that we get those contours restored that we have in the original view for infoworx icm as well so as a user we now have far more choice we can have the original view which represents everything on an element by element basis or we can smooth the edges of these geometries these flooding areas and also choose whether we want the water to be displayed in a translucent or non-translucent fashion and whether we want the transition from high depth to low ups to be graded or not graded so do we have a contour equivalent as we do here or do we want a slow transition from high depths to low depths in the 3d view [Music] you