does water flow through a funnel faster clockwise or counterclockwise?

Discussion in 'General Science & Technology' started by sculptor, Feb 18, 2018.

  1. Janus58 Valued Senior Member

    Messages:
    1,915
    Which makes those "demonstrations" of the Coriolis effect done by some locals for the sake of tourists even more ridiculous. ( You know the ones. It's where they show water spiraling counter-clockwise through a plug hole while North of the equator and then walking to the other side of the equator to show it spiraling clockwise.)
     
    exchemist likes this.
  2. Google AdSense Guest Advertisement



    to hide all adverts.
  3. exchemist Valued Senior Member

    Messages:
    7,339
    Good point.
     
  4. Google AdSense Guest Advertisement



    to hide all adverts.
  5. DaveC426913 Valued Senior Member

    Messages:
    9,212
    My point was, that any increase due to laminar flow will first have to more than overcome those rate-limiting factors.

    I think you're mixing up too many things here. Yes, swirling it will increase laminar flow, but, again it will lengthen the path, slowing exit rate.
    The laminar flow would have to compensate for that drop first, before it could facilitate greater rate of outflow. (Same with opening up a hole = less liquid volume)

    As was pointed out above, there is unquestionably a correlation between high rotation and low exit rate. The faster you swirl, the higher the cone of liquid wil rise, the lower will be able to exit.

    So, swirling, at best, has to be a low rotation rate factor.
     
  6. Google AdSense Guest Advertisement



    to hide all adverts.
  7. RainbowSingularity Valued Senior Member

    Messages:
    1,110
    well generally yes when laws are utilised to increase velocity appropriately.
    however, the original question was asking about adjusting principal actions that oppose physics laws to increase speed.

    surface tension
    gravity(inclusive of barrometric pressure via elevation and container volume)
    surface tension

    the principal question was could the effect that was due to physics laws, be changed by changing one of the atributes of the process.

    an air passage in the drain adjacent to water was offered, which is, as you can see also a physics law that cant be changed.

    the Coriolis effect can be countered using force of pouring ... which in its self is also attempting to change the terminal velocity & surface tension of the laws of physics that water must obey.

    the answer has always been no, right from the very start.

    its a really good experiment for kids in a class around age 8 years old to start to teach them laws of physics and get them involved in science.
     

Share This Page