✦ LIBER ✦

Numerical investigation of a laminar pulsating flow in a rectangular duct

✍ Scribed by A. Yakhot; M. Arad; G. Ben-Dor

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 186 KB
Volume: 29
Category: Article
ISSN: 0271-2091
DOI: 10.1002/(sici)1097-0363(19990430)29:8<935::aid-fld823>3.0.co;2-c

No coin nor oath required. For personal study only.

✦ Synopsis

A pulsating laminar flow of a viscous, incompressible liquid in a rectangular duct has been studied. The motion is induced under an imposed pulsating pressure difference. The problem is solved numerically. Different flow regimes are characterized by a non-dimensional parameter based on the frequency () of the imposed pressure gradient oscillations and the width of the duct (h). This, in fact, is the Reynolds number of the problem at hand. The induced velocity has a phase lag (shift) with respect to the imposed pressure oscillations, which varies from zero at very slow oscillations, to 90°at fast oscillations. The influence of the aspect ratio of the rectangular duct and the pulsating pressure gradient frequency on the phase lag, the amplitude of the induced oscillating velocity, and the wall shear were analyzed. Copyright

📜 SIMILAR VOLUMES

Numerical and experimental investigation

Numerical and experimental investigation of turbulent flow in a rectangular duct

✍ Masoud Rokni; Carl-Olof Olsson; Bengt Sundén 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 227 KB 👁 2 views

Details of the turbulent flow in a 1:8 aspect ratio rectangular duct at a Reynolds number of approximately 5800 were investigated both numerically and experimentally. The three-dimensional mean velocity field and the normal stresses were measured at a position 50 hydraulic diameters downstream from

A parametric investigation of gas-partic

A parametric investigation of gas-particle flow in a vertical duct

✍ Xue Liu; Benjamin J. Glasser 📂 Article 📅 2006 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 243 KB 👁 1 views

Diffusion in pulsating flow in a distens

Diffusion in pulsating flow in a distensible conduit

✍ Estrella B. Fagela-Alabastro; J. D. Hellums 📂 Article 📅 1969 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 453 KB

Direct Numerical Simulation of Complex F

Direct Numerical Simulation of Complex Free Shear Flows: A Transitional Rectangular Jet

✍ B. Rembold; N.A. Adams; L. Kleiser 📂 Article 📅 2002 🏛 John Wiley and Sons ⚖ 200 KB 👁 2 views

Numerical prediction of turbulent bubbly

Numerical prediction of turbulent bubbly two-phase flow in a rotating complicated duct

✍ Jing-Chun Wu; Kiyoshi Minemura 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 253 KB 👁 2 views

A fully three-dimensional numerical procedure based on the two-fluid model in a general curvilinear co-ordinate system is proposed for the prediction of developing turbulent bubbly two-phase flow in a rotating complicated duct. A Coriolis-modified turbulence model is extended to two-phase flows to a

Numerical solution for laminar mixed con

Numerical solution for laminar mixed convection in a horizontal annular duct: Temperature-dependent viscosity effect

✍ C. Nouar 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 234 KB 👁 1 views

The influence of free convection and variable viscosity on forced laminar flow of a Newtonian fluid in a horizontal annular duct is investigated. The inner and outer cylinders are subjected to a constant heat flux density. At the entrance of the annular duct, the flow is fully developed and the temp