🌊 Sediment in Water Systems 🌊
This section is incredibly crucial when diving into Water Quality Simulations 🌧️🔬.
🚰 Sediment in conduits 🚰 In InfoWorks ICM, sediment layers in pipes have a story to tell 📖. They're treated differently by the hydraulic model 🌪️ and the water quality model 🌈. Picture this: InfoWorks ICM is like a theatre 🎭, and it showcases two different layers of sediment in pipes, each playing its unique role.
🛌 The Two Sediment Stars 🌟:
- Passive Layer 🛏️ - This is the chilled-out layer. Think of it as the sediment that's lounging around, fixed and unchanged during any dramatic rain event. It's just there, minding its business.
- Active Layer 🏃♂️ - This layer is the real action hero. During a water quality simulation, it can be eroded, transported, and deposited. It's the dynamic part of the sediment story.
📏 If you add the passive and active layers, and they make up more than 80% of the conduit's height, well, no more dramatic scenes for the active layer. It's a wrap; no more deposition.
💡 You're handed the director's chair 🎬. You decide whether the drama in the active layer during a water quality simulation affects the overall hydraulic story or not. This directorial choice is yours in the QM Parameters Dialog.
🚫 If you choose to ignore the active layer's dramatics for the hydraulic story, it might be a good idea to cap the sediment depth a bit, maybe at 10%, just so the hydraulic and water quality stories aren't worlds apart.
🌊🚰 Pipe Sediment in InfoWorks ICM 🚰🌊
🛌 Passive Layer 🛌: When sediment decides to take a break and just chill, you get the passive layer. It's fixed and doesn't change during any performance, acting mainly as a constriction on the stage (or pipe). How deep is this layer? Well, you set it using the Sediment Depth field for each conduit. Or, get fancy and define a unique set of Pipe Sediment Data for your show.
🏃♂️ Active Layer 🏃♂️: Here's where the action happens. This layer has one or two sediment stars 🌟, called Sediment Fraction 1 (SF1) and Sediment Fraction 2 (SF2). Each star has its own characteristics, like particle size and density. And if you want some behind-the-scenes control, you can tweak these characteristics in the Surface Pollutant Editor.
The active layer's drama is limited by: 📏 Maximum sediment depth - depth of Passive Layer
🏞️ River reach bed sediment 🏞️
Like a trilogy, the river section bed has three parts:
- Active layer 🏃♂️: This is the top layer. It's dynamic and ever-changing. You set its thickness, and as sediment gets deposited, some of it goes to the layer below.
- Deposited layer 🍂: Think of this as the middle child. It's made up of sediment that once was active but decided to settle down.
- Parent layer 🌍: This is the base layer - the OG sediment. It's the river bed, and it only gets eroded if the deposited layer is all used up.
Remember, these layers tell the story of the river, its history, and its future. So, take the director's chair and make the tale epic 🎥🍿.
