July 31, 2020 at 1:45 pmprajputAnsys EmployeeI have a pipe of diameter D. The flow enters into the pipe from a large reservoir. I am using correlations based on fully developed pipe profile to estimate losses, but I am not getting correct answer. Do you know why?
July 31, 2020 at 1:45 pmKeyur KanadeAnsys Employee
All internal flows have a characteristic variable called the Hydrodynamic entrance length. It is defined as the length from the entrance of a pipe (internal flow) required to achieve a fully-developed flow profile. For laminar flows in circular tubes, the fully developed flow profile is parabolic. For turbulent flows, this is flatter due to turbulent mixing in the radial direction.
Fully developed pipe flow profiles are valid only after the flow becomes fully-developed. Since, you are not considering the entrance length in your calculations, you are getting a wrong estimate of the losses.
- You must be logged in to reply to this topic.
Simulation World 2022
Check out more than 70 different sessions now available on demand. Get inspired as you hear from visionary companies, leading researchers and educators from around the globe on a variety of topics from life-saving improvements in healthcare, to bold new realities of space travel. Take a leap of certainty and check out a session today here.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- Suppress Fluent to open with GUI while performing in journal file
- Heat transfer coefficient
- What are the differences between CFX and Fluent?
- Floating point exception in Fluent
- The solver failed with a non-zero exit code of : 2
- Getting graph and tabular data from result in workbench mechanical
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error in cfd post
© 2022 Copyright ANSYS, Inc. All rights reserved.