Pressure Drop in Laminar and Turbulent Flows in Circular Pipe with Baffles – An Experimental and Analytical Study

نویسندگان

  • Mushtak T. Al-Atabi
  • S. B Chin
  • Sulaiman Al-Zuhair
  • Xiao Yu Luo
چکیده

Flow in a circular pipe fitted with segmental baffles may be treated as a shellwithout-tube system. Its pressure drop has been calculated by adapting the Kern correlation [1] for pressure drop in the shell side of shell-and-tube heat exchangers. The Kern correlation is essentially based on the Hagen – Poiseuille equation for laminar flow, but flow visualization results presented here show that enhanced mixing and turbulence-like flow may be present at Reynolds numbers (based on the pipe diameter) as low as 50. A mathematical model, accounting for the effects of geometry of the baffle configurations, has been developed to predict the pressure drop in circular pipe fitted with segmental baffles. The model was solved algebraically for flow in pipe with three baffle arrangements and the results were validated by experimental data. The pressure drops thus calculated showed better agreement with experimental results than those predicted by the modified Kern model for Reynolds number in the range of 50 – 600.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The effect of micro/nano-particles on pressure drop in Oil pipeline: Simulation

A high pressure drop happens when heavy oil with high viscosity moves through the oil pipeline. A variety of methods to avoid this pressure drop is available. One of which is injection of chemicals to reduce the viscosity and ultimately reduce pressure drop. Using the pipesim software, the effect of dispersion of nano and micro-particles into the oil has been simulated to study the amount of th...

متن کامل

The effect of micro/nano-particles on pressure drop in Oil pipeline: Simulation

A high pressure drop happens when heavy oil with high viscosity moves through the oil pipeline. A variety of methods to avoid this pressure drop is available. One of which is injection of chemicals to reduce the viscosity and ultimately reduce pressure drop. Using the pipesim software, the effect of dispersion of nano and micro-particles into the oil has been simulated to study the amount of th...

متن کامل

Experimental Investigation of Friction Coefficient in Ribleted Pipes and the Effect of Fine Particles

The effect of fine particles on turbulence damping and reduction of flow friction coefficient in ribleted pipes, have been investigated experimentally. Tests have been conducted in a ribleted pipe with hydraulic diameter of 18.6 mm, and 20 stream wise riblets of 1.8 mm depth, along the pipe. Flows of water tap with Reynolds number from 5000 to 30000 were compared with flows containing silt-clay...

متن کامل

Evaluating the performance of ANSYS-CFX software in simulation the velocity and pressure distributions over circular crested weirs

ANSYS-CFX is an effective and multipurpose software which can be used for simulation the computational fluid dynamics (CFD) solutions at all levels of complexity. This software can be used for numerical solution of two and three dimensional flows, compressible and incompressible flows, viscous and non-viscous flows, laminar and turbulent flows, Newtonian and non-Newtonian flows, porous media, s...

متن کامل

Entropy Generation Analysis of EG – Al2O3 Nanofluid Flows through a Helical Pipe

fluids for various industrial applications because of their excellent thermal performance. This study analytically and experimentally examines the effects of nanoparticle dispersion on the entropy generation of EG–Al2O3 ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006