U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Lumpfish Variable Flow Chamber



Details

  • Personal Author:
  • Corporate Authors:
    University of New Hampshire. Sea Grant Program.
  • NOAA Program & Office:
  • Sea Grant Program:
    NHU (New Hampshire Sea Grant)
  • Description:
    Lumpfish (Cyclopterus lumpus) are a small pelagic fish that can be found in the North Atlantic and in the adjacent locations of the Arctic Ocean. They can be used in the aquaculture industry as a way to mitigate sea lice that harm the fish being grown. Sea lice can cause unnecessary stress on the fish as well as stunt the growth and performance of the fish. The lumpfish have a suction cup on the bottom of their bodies that they can use to prevent being swept away by ocean currents. The adhesive strength of the sucker is unknown, so the previous year's Tech 797 group started designing a recirculating flume to test the fish. They were able to design and build a flume with variable flow speeds. They did not get to measure the speeds or modify the flume to have less turbulent flow. Using a Vectrino Plus, an acoustic doppler velocimeter, the flow speeds were recorded before modifying the track to see how close it was to the desired speed of 4-60 cm/s. To help steady the flow in the testing section of the flume, different flow vanes were inserted at the first bend of the flume. Apart from using flow vanes to help the flow, as the previous group suggested, a lid was added so that the water levels in the flume could increase to reduce ventilation and increase usable power (Brady et al. 2022.) To verify if the turning vanes help reduce the turbulence, the turbulent kinetic energy was found.
  • Keywords:
  • Format:
    pdf
  • Document Type:
    Non-series Report
  • Place as Subject:
    New Hampshire
  • License:
  • Rights Information:
    CC0 Public Domain
  • Compliance:
    Submitted
  • Main Document Checksum:
    urn:sha-512:58b48abce5dcf01f574db27cc2ec1feab33e0349fe8300e53d913031c62bb01651fc7be0a428b496b3be50a9dd88b7e73ff2a09ed0078bfeda05d68d0d1c61db
  • Download URL:
  • File Type:
    Filetype[PDF - 5.60 MB ]
PREVIOUS
ON THIS PAGE
Details
The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP