Abstract:
Longitudinally corrugated pipes can be described as pipes with periodically
converging-diverging cross-area arranged along the flow course. These pipes are
mainly utilized in engineering applications, for example, pipe flow in a heat exchanger where wall corrugation improves heat convection,gas to liquid contractors
in the chemical business, ventilation, air conditioning, drag reduction and mass transfer efficiency. Both experimental and analytical works detailed the
impact of corrugation amplitude and distance in the turbulent flow by investigation of a few turbulent characteristics,for example,Reynolds stress and velocity
variation. In our examination, we are concerned in assessing friction factor for
turbulent flow inside longitudinally corrugated pipes as a function of the amplitude of the pipe.
Mass and momentum conservation equations are reviewed and
particular boundary conditions are fixed to describe a completely developed periodic
system in a solitary axisymmetric bidimensional module which signifies
the periodically corrugated pipe configuration. Two two-equation turbulence
models (k− andk−ω) are utilized in the calculations. The numerical simulation
of the isothermal, single phase and incompressible flow is prepared utilizing
Computational Fluid Dynamics methods, using the commercially available
CFD software ANSYS FLUENT. To begin with, the completely developed turbulent
flow in a smooth pipe is studied. Simulations are carried out to authenticate
the preferred models, computational meshes and boundary conditions.
Next a longitudinally corrugated pipe of length 7λ is studied. Impact of surface
corrugation, controlled by wavelength-amplitude proportionλ/a on the flow is
exhibited. The simulation work has been completed forλ/a = 1, 11 and 19 for a
Reynolds number range of 10 000 to 20 000. Flow phenomena like flow separation
and vortex caused by the corrugation are described. The friction factor for
various values of the wave length is calculated by operating aset of simulations.
The friction factor for a given Reynolds number in a longitudinally corrugated
pipe decreases with increase of the wavelength.
Zibo, J (2024). Turbulent flow inside longitudinally corrugated pipes. Afribary. Retrieved from https://track.afribary.com/works/turbulent-flow-inside-longitudinally-corrugated-pipes
Zibo, Jane "Turbulent flow inside longitudinally corrugated pipes" Afribary. Afribary, 30 Mar. 2024, https://track.afribary.com/works/turbulent-flow-inside-longitudinally-corrugated-pipes. Accessed 05 Nov. 2024.
Zibo, Jane . "Turbulent flow inside longitudinally corrugated pipes". Afribary, Afribary, 30 Mar. 2024. Web. 05 Nov. 2024. < https://track.afribary.com/works/turbulent-flow-inside-longitudinally-corrugated-pipes >.
Zibo, Jane . "Turbulent flow inside longitudinally corrugated pipes" Afribary (2024). Accessed November 05, 2024. https://track.afribary.com/works/turbulent-flow-inside-longitudinally-corrugated-pipes