A
A. Sameen
Researcher at Indian Institute of Technology Madras
Publications - 46
Citations - 543
A. Sameen is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Reynolds number & Instability. The author has an hindex of 12, co-authored 44 publications receiving 454 citations. Previous affiliations of A. Sameen include Indian Institute of Science & Jawaharlal Nehru Centre for Advanced Scientific Research.
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Journal ArticleDOI
Starting Transient Flow Phenomena in Inert Simulators of Solid Rocket Motors with Divergent Ports
VR Sanal Kumar,B. N. Raghunandan,Heuy Dong Kim,A. Sameen,Toshiaki Setoguchi,Srinivasan Raghunathan +5 more
TL;DR: In this paper, the authors investigated the mechanisms responsible for the high ignition peak pressure (pressure peak), pressure-rise rate, instabilities, and pressure oscillations often observed during the static tests and the actual flights of certain class of high-performance solid rocket motors with nonuniform ports.
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Stabilization of hydrodynamic flows by small viscosity variations.
TL;DR: This paper shows that the strong stabilization of the primary instability is also obtained when the viscosity profile is realistic (inferred from simulations of turbulent flows with a small concentration of polymers), and proposes that similar physics act in turbulent drag reduction.
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Non-Boussinesq convection at moderate Rayleigh numbers in low temperature gaseous helium
TL;DR: In this article, the effects of severe non-Boussinesq conditions on thermal convection at the moderate Rayleigh numbers of Ra = 2.4K and 2.5K were studied.
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The relative roles of divergence and velocity slip in the stability of plane channel flow
TL;DR: In this article, a non-parallel stability analysis of small-scale flows with wall roughness is presented, showing that the stabilising effect of slip is reversed at higher angles of divergence, and transient growth is unaffected by either wall-divergence, or by slip at any divergence.
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Effects of Prandtl number on the laminar cross flow past a heated cylinder
TL;DR: In this paper, the authors simulated and analyzed flow past a heated cylinder at constant surface temperature in the laminar regime at moderate buoyancy, and the parameters governing the flow dynamics were the Reynolds number, Re, the Richardson number, Ri and the Prandtl number, Pr.