# Exercise 1c Minimum Flow Properties

Note: Create a new network called Exercise 1d and setup the timestep before running the network as described in Exercise 1a.

![](https://water-strategy.gitbook.io/~gitbook/image?url=https%3A%2F%2F530325344-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FOe4DHiaeqejzGopyV9BO%252Fuploads%252F9vvPDUvqmPMtTy1B6YC3%252F0.png%3Falt%3Dmedia\&width=768\&dpr=4\&quality=100\&sign=b7fb680a\&sv=2)

### **Create the network** <a href="#create-the-network" id="create-the-network"></a>

Navigate to the left panel and click on **Build** to open the Nodes list.

Drag and drop to the workspace Map:

\- 1 input node ![](https://water-strategy.gitbook.io/~gitbook/image?url=https%3A%2F%2F530325344-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FOe4DHiaeqejzGopyV9BO%252Fuploads%252FVql9GrpHtvFWNIrZlJwt%252Fimage.png%3Falt%3Dmedia%26token%3Dafbbe039-58bd-42f1-a7ca-328c3f52d907\&width=300\&dpr=4\&quality=100\&sign=766e468b\&sv=2)

\- 2 output nodes ![](https://water-strategy.gitbook.io/~gitbook/image?url=https%3A%2F%2F530325344-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FOe4DHiaeqejzGopyV9BO%252Fuploads%252F4264dvX48MmApPtBAW1V%252Fimage.png%3Falt%3Dmedia%26token%3D0a7d931c-943e-4e1f-bd71-500039fea569\&width=300\&dpr=4\&quality=100\&sign=3114d871\&sv=2)

\- 2 link nodes ![](https://water-strategy.gitbook.io/~gitbook/image?url=https%3A%2F%2F530325344-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FOe4DHiaeqejzGopyV9BO%252Fuploads%252Fg1RSNddX4ksUHcCJNosN%252Fimage.png%3Falt%3Dmedia%26token%3Df0210046-5792-4ede-92dc-4cad770528bb\&width=300\&dpr=4\&quality=100\&sign=c6941e48\&sv=2)

Click on **edge** ![](https://water-strategy.gitbook.io/~gitbook/image?url=https%3A%2F%2F530325344-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FOe4DHiaeqejzGopyV9BO%252Fuploads%252FfgL2eO97H2QxSOWetpuW%252F4.png%3Falt%3Dmedia\&width=300\&dpr=4\&quality=100\&sign=c443e76e\&sv=2) to activate “link mode”, connect the nodes and fill their attributes as shown in the picture below:

![](https://water-strategy.gitbook.io/~gitbook/image?url=https%3A%2F%2F530325344-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FOe4DHiaeqejzGopyV9BO%252Fuploads%252F1dFYasgKp4to8Nuis8p5%252F5.png%3Falt%3Dmedia\&width=768\&dpr=4\&quality=100\&sign=6ceca90e\&sv=2)

Click again on **edge** ![](https://water-strategy.gitbook.io/~gitbook/image?url=https%3A%2F%2F530325344-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FOe4DHiaeqejzGopyV9BO%252Fuploads%252FaE4xc3MWqC1Q44wANF36%252F6.png%3Falt%3Dmedia\&width=300\&dpr=4\&quality=100\&sign=92657f95\&sv=2) to deactivate “link mode”.

On the left panel click on **Run a Model** ![](https://water-strategy.gitbook.io/~gitbook/image?url=https%3A%2F%2F530325344-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FOe4DHiaeqejzGopyV9BO%252Fuploads%252FfwtQdqLb0xKKgbN3vgQn%252F7.png%3Falt%3Dmedia\&width=300\&dpr=4\&quality=100\&sign=ace6b556\&sv=2).

A new window will pop-up, click on **Submit**

Visualize the **simulated\_flow** results

![](https://water-strategy.gitbook.io/~gitbook/image?url=https%3A%2F%2F530325344-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252FOe4DHiaeqejzGopyV9BO%252Fuploads%252FvruStTd3cQdFqPnQJhMi%252Fimage.png%3Falt%3Dmedia%26token%3Df9648eba-d178-4872-ab2e-1ae2121687b8\&width=768\&dpr=4\&quality=100\&sign=5dd426c2\&sv=2)

### **Explanation** <a href="#explanation" id="explanation"></a>

The water distribution network is designed to ensure a mandatory input node supply of 20 Mm³/day. This configuration enforces a minimum and maximum flow of 20 Mm³/day, making it the total daily flow available for the entire network.

**Link1:** High Priority Allocation

* **Priority:** Link1 has the highest priority due to its most negative allocation penalty value.
* **Max Flow Configuration:** The network aims to allocate 8 Mm³/day to Link1, given the available flow.
* **Allocation:** With 20 Mm³/day available, 8 Mm³/day is allocated to Link1, leaving a remaining 12 Mm³/day for subsequent nodes.

**Output2:** Second Priority Allocation

* **Priority:** Output2 is the second priority node based on the allocation penalty value.
* **Max Flow Configuration:** The network targets an allocation of 8 Mm³/day to Output2, if available.
* **Allocation:** With 12 Mm³/day remaining after Link1's allocation, 8 Mm³/day is allocated to Output2, leaving a remaining 4 Mm³/day.

**Link2:** Remaining Flow Route

* **Max Flow Configuration**: Link2 does not have a maximum flow constraint.
* **Flow Dependency:** The flow through Link2 depends on downstream constraints rather than a specific max flow value.

**Output1:** Final Allocation Node

* **Configuration:** Output1 lacks both a maximum flow constraint and an allocation penalty value.
* **Flow Allocation:** Output1 through Link2 receives the remaining 4 Mm³/day flow in the network.
* **Flow Distribution:**

8 Mm³/day is received from Link1.

4 Mm³/day is received from Link2.

**Total Flow:** Output1 ultimately withdraws 12 Mm³/day.