News Column

Reports Outline Aerospace Research Findings from Birla Institute of Technology and Science (Numerical study on flow and aerodynamic characteristics:...

July 30, 2014



Reports Outline Aerospace Research Findings from Birla Institute of Technology and Science (Numerical study on flow and aerodynamic characteristics: Square cylinder and eddy-promoting rectangular cylinder in tandem near wall)

By a News Reporter-Staff News Editor at Defense & Aerospace Week -- Fresh data on Aerospace Research are presented in a new report. According to news reporting originating from Rajasthan, India, by VerticalNews correspondents, research stated, "Numerically simulated results are presented for shear flow past a square cylinder (of height a) near a wall (at a gap height 0.5a) in presence of eddy promoting rectangular cylinders (of fixed height a with different widths b

Our news editors obtained a quote from the research from the Birla Institute of Technology and Science, "The governing unsteady Navier-Stokes equations are solved numerically based on the finite volume method on a staggered grid system using QUICK scheme. The resulting equations are then solved by an implicit, time-marching, pressure correction-based SIMPLE algorithm. The influence of numerical parameters on the validated code used in this study is demonstrated here. The strong dependency of vortex shedding (from both the cylinders) on aspect ratio r and spacing distance S are explored and, hence, a region of finite area in the Sr-plane is proposed in order to generate the unsteadiness in the steady flow of the downstream cylinder. An attempt is made to identify the different flow regimes depending on the flow patterns of the downstream cylinder, associated with the geometrical parameters (S and r). Owing to the differences in the basic shedding frequency of the square (downstream) cylinder from that of the rectangular cylinder (promoter) of different widths, the major issue of appearing multiple peaks in the spectrum of fluctuating lift coefficient of the downstream cylinder is addressed. The thrust force observed on the downstream cylinder in presence of the thinner promoter at closely spaced arrangement is justified presenting the surface pressure distribution."

According to the news editors, the research concluded: "Finally, the present numerical results at large spacing distances are certified with some previous numerical and experimental findings."

For more information on this research see: Numerical study on flow and aerodynamic characteristics: Square cylinder and eddy-promoting rectangular cylinder in tandem near wall. Aerospace Science and Technology, 2014;36():5-20. Aerospace Science and Technology can be contacted at: Elsevier France-Editions Scientifiques Medicales Elsevier, 23 Rue Linois, 75724 Paris, France. (Elsevier - www.elsevier.com; Aerospace Science and Technology - www.elsevier.com/wps/product/cws_home/600735)

The news editors report that additional information may be obtained by contacting D.K. Maiti, Birla Inst Technol & Sci, Dept. of Math, Pilani 333031, Rajasthan, India.

Keywords for this news article include: Rajasthan, India, Asia, Aerospace Research

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


For more stories covering the world of technology, please see HispanicBusiness' Tech Channel



Source: Defense & Aerospace Week


Story Tools






HispanicBusiness.com Facebook Linkedin Twitter RSS Feed Email Alerts & Newsletters