Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Water Physics - trough split -apple transportation

Status
Not open for further replies.

bryan98801

Newbie level 2
Joined
Aug 13, 2009
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Wenatchee
Activity points
1,301
physics of water

I work in an apple processing plant and our apples are transferred from one part of the plant to another through water troughs. I've come to a slight physics problem working on the troughs. I have one large trough splitting into 2 smaller. It has a "Y" shaped split. Even so the apples bunch up right there. There is more than enough space for them to fit through but they just swirl around in the water until there is enough apples behind the split to force the flow. Is there a better shape to make the split other than a "Y" shape? Would a round more "U" shape work better for flow? If I turn up the water pressure it doesn't help. The apples just swirl faster in the split. I turn down the water pressure and it helps a little but the workers complain about not recieving apples fast enough.
 

XNOX_Rambo

Advanced Member level 1
Joined
Jul 13, 2002
Messages
435
Helped
90
Reputation
180
Reaction score
2
Trophy points
1,298
Location
Far out, man!
Activity points
3,571
water physics

Interesting subject.

Is the trough wide enough to accommodate two apples side by side?
If so you could put a post in the middle of the trough just before the Y split
to "pre-nudge" them into position without creating too big a vortex in the water.

I guess the distance from the post to the split should be less than an apples
diameter.

Just a shot in the dark... :)

/Ram
 

bryan98801

Newbie level 2
Joined
Aug 13, 2009
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Wenatchee
Activity points
1,301
+log water physics

Well the main trough is large enough for around 10 apples and the two smaller are large enough for 3 in a gridlike pattern.
 

XNOX_Rambo

Advanced Member level 1
Joined
Jul 13, 2002
Messages
435
Helped
90
Reputation
180
Reaction score
2
Trophy points
1,298
Location
Far out, man!
Activity points
3,571
Re: Water Physics

All right, as it is that wide I think you need some sort of vanes in the flow closer to the split
to break the swirls and maintain a laminar flow in the water.

It is easy to try out at least, just put at sheet of plexiglass in the trough and see what happens.

/Ram
 

    bryan98801

    points: 2
    Helpful Answer Positive Rating

flatulent

Advanced Member level 5
Joined
Jul 19, 2002
Messages
4,629
Helped
489
Reputation
980
Reaction score
150
Trophy points
1,343
Location
Middle Earth
Activity points
46,689
Re: Water Physics

This general setup was used about 1955 as a "fluid computer flip flop." You are in an indeterminate state. The fluid computer had side jets which directed the flow into one or the other of the two output branches.

The baffle method mentioned above should work for you.
 

FvM

Super Moderator
Staff member
Joined
Jan 22, 2008
Messages
47,960
Helped
14,147
Reputation
28,553
Reaction score
12,833
Trophy points
1,393
Location
Bochum, Germany
Activity points
278,231
Water Physics

To keep a laminar flow, the through depth can be continuously reduced in the middle, sufficient before the split.
 

harsha_jois

Member level 4
Joined
Jun 27, 2007
Messages
75
Helped
8
Reputation
16
Reaction score
4
Trophy points
1,288
Location
Mysuru, Karnataka, India
Activity points
1,752
Water Physics

hi bryan98801
you can just try raising the bottom a bit before the y section begins
that is the depth of the 2 smaller sections must be lesser but they should be lower.
the division must just continue to the main trough
like banking of the roads
hope this helps
 

Element_115

Advanced Member level 2
Joined
Mar 23, 2002
Messages
509
Helped
72
Reputation
144
Reaction score
43
Trophy points
1,308
Activity points
3,767
Re: Water Physics

harsha_jois said:
hi bryan98801
you can just try raising the bottom a bit before the y section begins
that is the depth of the 2 smaller sections must be lesser but they should be lower.
the division must just continue to the main trough
like banking of the roads
hope this helps
This is what I was thinking, although I would not "Raise" the stem of the "Y" but
lower the two Branches of the "Y", right at the y-transistion, by ~ 1 apples height.
The gravity would most likely keep the apples moving.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top