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Amaresh Dalal

Bio: Amaresh Dalal is an academic researcher from Indian Institute of Technology Guwahati. The author has contributed to research in topics: Heat transfer & Nusselt number. The author has an hindex of 23, co-authored 112 publications receiving 1780 citations. Previous affiliations of Amaresh Dalal include Purdue University & Indian Institute of Technology Kanpur.


Papers
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Journal ArticleDOI
TL;DR: In this article, a tilted heated square cylinder kept in an enclosure has been studied in the range of 10 3 ǫ⩽ Ra ⩽ 10 6, where the stream function-vorticity formulation of the Navier-Stokes equation is solved numerically using finite-difference method in non-orthogonal body-fitted coordinate system.

183 citations

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TL;DR: In this article, a finite volume method, second-order accurate in space and time, employing non-staggered arrangement of the variables with momentum interpolation for the pressure-velocity coupling is developed.
Abstract: Numerical simulations of two-dimensional laminar flow past a triangular cylinder placed in free-stream at low Reynolds number (10⩽Re⩽250) are performed. A finite volume method, second-order accurate in space and time, employing non-staggered arrangement of the variables with momentum interpolation for the pressure–velocity coupling is developed. Global mode analysis predicts Recr=39.9 which confirms the results of earlier studies. Vortex shedding phenomena is found to be similar to the square cylinder with no second bifurcation in the range of Re studied. A discussion on the time-averaged drag coefficient, rms of lift coefficient and Strouhal number is presented. Particle tracking and the instantaneous streaklines provide an excellent means of visualizing the von Karman vortex street. Copyright © 2006 John Wiley & Sons, Ltd.

125 citations

Journal ArticleDOI
01 Jan 2015-Energy
TL;DR: In this paper, the authors numerically analyzed the heat transfer and entropy generation characteristics in a two-dimensional porous right-angled triangular enclosure with undulations on the left wall and found that for lower values of Rayleigh number, heat transfer is dominated by conduction mechanism.

114 citations

Journal ArticleDOI
TL;DR: In this paper, a two-dimensional enclosure with three flat and one wavy walls is numerically investigated and the results obtained show that the angle of inclination affects the flow and heat transfer rate in the cavity.

86 citations

Journal ArticleDOI
TL;DR: In this article, the integral forms of the governing equations are solved numerically using finite-volume method in non-orthogonal body-fitted coordinate system and SIMPLE algorithm with higher-order upwinding scheme are used.

78 citations


Cited by
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08 Dec 2001-BMJ
TL;DR: There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.
Abstract: There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality. Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

33,785 citations

01 Jan 2016
TL;DR: The numerical heat transfer and fluid flow is universally compatible with any devices to read and is available in the authors' digital library an online access to it is set as public so you can get it instantly.
Abstract: Thank you for reading numerical heat transfer and fluid flow. Maybe you have knowledge that, people have search numerous times for their favorite books like this numerical heat transfer and fluid flow, but end up in infectious downloads. Rather than reading a good book with a cup of coffee in the afternoon, instead they cope with some malicious virus inside their computer. numerical heat transfer and fluid flow is available in our digital library an online access to it is set as public so you can get it instantly. Our books collection spans in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Merely said, the numerical heat transfer and fluid flow is universally compatible with any devices to read.

1,531 citations

01 Jan 2006
TL;DR: The mysterious rattleback and its fluid counterpart:Developments in shear instabilities(Patrick Huerre,Falling clouds+Elisabeth Guazzelli)LEcotectural fluid mechanics%Herbert Huppert )
Abstract: 流体力学杂志“Journal of Fluid Mechanics”由剑桥大学教授George Batchelor在1956年5月创办,在国际流体力学界享有很高的学术声望,被公认为是流体力学最著名的学术刊物之一,2005年的影响因子为2.061,雄居同类期刊之首.在它创刊50周年之际,2006年5月JFM出版了第554卷的纪念特刊,其中刊登了现任主编(美国西北大学S.H.Davis教授和英国剑桥大学T.J.Pedley教授)合写的述评:“Editorial:JFM at50”,以JFM为背景,从独特的视角对近50年来流体力学的发展进行了简明的回顾和展望,并归纳了一系列非常有启发性的有趣统计数字.2006年7月21日在剑桥大学应用数学和理论物理研究所(DAMTP)举行了创刊50周年的庆祝会.下午2点,JFM的新老编辑和来宾会聚一堂,Pedley教授致开幕词,其后是5个精彩的报告:The mysterious rattleback and its fluid counterpart(Keith Moffatt),Developments in shear instabilities(Patrick Huerre),Falling clouds(Elisabeth Guazzelli),Ecotectural fluid mechanics(Paul Linden),The success of JFM(Herbert Huppert),最后由Davis教授致闭幕词.

767 citations

Journal ArticleDOI
TL;DR: In this article, the authors present the latest status of PEM fuel cell technology development and applications in the portable and transportation power through an overview of the state of the art and most recent technological advances, and describe materials and water/thermal transport management for fuel cell design and operational control.

627 citations

Journal ArticleDOI
TL;DR: In this paper, a review of techniques for analyzing fluid flow data is presented, with the aim of extracting simplified models that capture the essential features of these flows, in order to gain insight into the flow physics, and potentially identify mechanisms for controlling these flows.
Abstract: Advances in experimental techniques and the ever-increasing fidelity of numerical simulations have led to an abundance of data describing fluid flows. This review discusses a range of techniques for analyzing such data, with the aim of extracting simplified models that capture the essential features of these flows, in order to gain insight into the flow physics, and potentially identify mechanisms for controlling these flows. We review well-developed techniques, such as proper orthogonal decomposition and Galerkin projection, and discuss more recent techniques developed for linear systems, such as balanced truncation and dynamic mode decomposition (DMD). We then discuss some of the methods available for nonlinear systems, with particular attention to the Koopman operator, an infinite-dimensional linear operator that completely characterizes the dynamics of a nonlinear system and provides an extension of DMD to nonlinear systems.

567 citations