Emojis - 🌊🌱 Sediment Dynamics in InfoWorks ICM 🌱🌊

 🌊🌱 Sediment Dynamics in InfoWorks ICM 🌱🌊

When it comes to Water Quality Simulations, sediment plays a pivotal role. Here's a detailed breakdown:

🛤️ Sediment in Conduits 🛤️ In InfoWorks ICM, sediment behavior in pipes is bifurcated into two primary layers:

1. Passive Layer: This remains static throughout any simulation.
2. Active Layer: This layer can undergo erosion, transportation, and deposition during a water quality simulation.

Should the sum of these layers exceed 80% of the conduit's height, further deposition is halted.

🛠️ You can adjust the interaction between sediment depth and hydraulic calculations through the QM Parameters Dialog during run setup.

🔍 Pipe Sediment in InfoWorks ICM 🔍

1. Passive Layer:

   • Acts as a fixed constraint within the pipe.
   • Depth is adjusted using "Sediment Depth" for each conduit or through the "Pipe Sediment Data".

2. Active Layer:

   • Comprises mobile sediment.
   • Constituted by one or two sediment fractions: Sediment Fraction 1 (SF1) and Sediment Fraction 2 (SF2).
   • Parameters for sediment include D50 (average particle size) and Specific Gravity (density).

To adjust the passive layer, you can either redefine values in the "Sediment Depth" field or utilize the "Pipe Sediment Data".

🌊 River Reach Bed Sediment 🌊 The river bed's sediment is categorized into three distinct layers:

1. Active Layer: Found on the river bed's surface.
2. Deposited Layer: Located below the active layer.
3. Parent Layer: Found beneath the deposited layer, representing the original river bed.

🍃 Active Layer:

• The thickness is a function of the d50 or d90 bed material size.
• As sediment accumulates, a corresponding volume is transferred to the layer below.

🌾 Deposited Layer:

• Contains material previously situated in the active layer.
• Can diminish to zero when all its content is transferred to the active layer.

🌍 Parent Layer:

• Represents the riverbed and is defined by the Sediment Gradings.
• Erosion can occur, transferring material to the active layer, but no material is added back.

In essence, understanding sediment dynamics in InfoWorks ICM is crucial for accurate water quality simulations, given its intricate interactions and implications for water flow and quality. 🌊🔍📊