[FRIAM] Off the wall question about turbulence

[glen]

My intuition was "of course there's turbulence in the trap" ...

I was going to suggest you unhook the washer, have a friend pour water from a large bucket into the drain while you hold your ear, tightly, to the side of the u-trap ... or maybe clamp your teeth on it so you can hear vibration that way ... or use a hose clamp to mount a rod and clamp your teeth onto that rod ...

Or, you could use a piezo sensor:
https://www.circuits-diy.com/piezoelectric-vibration-sensor-module/
I'm not sure what turbulence in the trap might sound like. But you won't know until you take the data.

You could also get one of those fancy snakes with a camera on the tip ... way more fun than taking apart the pipe.

On 11/27/23 09:22, cody dooderson wrote:
> I have no idea. You might be able to buy a clear plasti replacement for the u-trap. Then you could add some food coloring to the wash and record a video of what happens.
> 
> _ Cody Smith _
> cody at simtable.com <mailto:cody at simtable.com>
> 
> 
> On Mon, Nov 27, 2023 at 7:42 AM Prof David West <profwest at fastmail.fm <mailto:profwest at fastmail.fm>> wrote:
> 
>     When the washer drains, water flows for a bit, then you hear the pipe filling up and water comes out the top. Pause the flow, water drains quickly, start and pipe fills again. Cycle till rate of flow subsides.
> 
>     Question: can turbulence occur at the u-trap and cause a temporary blockage?  If yes, does the  turbulence occur because of the distance from entry to the u-trap?
> 
>     Will ask plumber — but prior discussions of turbulence on the list made me think it might pose an interesting problem..


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