Here is a picture of my backyard:

As you can see, I like to grow what the plants, And those the plants need water.

During the last long fusion of out 4 th, I decided to install a watering system for those the plants.

When I looked at what was available at the hardware store, I saw two options: a quarter in hoses and 1/2 hoses. In Not being too sure which one should I pick, I decided to do some simulation first.

Sanity Check

To begin, I did a bit of googling To find out that the typical household pressure is usually between 40 and 60 PSI. On experience, I know that filling a 1 gallon watering the container takes about 6 seconds, so I decided To simulate that first, To ensure my simulation was in the correct order of magnitude. The Good news, it is:

The Real System

Having good confidence that my simulation whenever realistic, I drew my setup using a series ofThe Hydraulic Pipeline LP, where LP stands for Low Pressure.

On the house, that he look like the following, where I drew a yellow line for a main hose, and green lines for smaller sections going directly to each plant.

In each block, I specified the radius and length of each section:

Along with the elevation, to include the effect of gravity:

My first simulation with all the system made of a quarter in pipes showed that I order to get only 2.2 GPM of water "coming out of the faucet...This means that it order to take forever to water my the plants, and that the last one farthest from the faucet order to get no water.

To improve things, I thought about making the main line with a 1/2 in hose, and then tap into it using a quarter in short hoses To reach each pot. This time, I got 10 GPM at the faucet, which is more acceptable. The clear that there was one problem. The first plant as identifiers a lot more water than the last one.

Adjustable Nozzles

To fix that, I will need To add adjustable nozzles To restrict the flow on the closest To the plants.

To simulate those, I added an orifice To the end of each hose. By brigade the last nozzle fully the opened and making the orifices smaller as I was getting closer To the faucet, I could get a roughly equal flow rate on all nozzles, and keep the flow rate out of the faucet close To 10 GPM.

The Final Result

With confidence, I drove to the hardware store, bought everything I men, installed the system, and now I can sit back and look at my the plants being watered.

Now it 's your turn

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