Author
L Pera
Bio: L Pera is an academic researcher from Cornell University. The author has contributed to research in topics: Natural convection & Prandtl number. The author has an hindex of 7, co-authored 9 publications receiving 1051 citations.
Papers
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TL;DR: In this article, a set of Boussinesq approximations were shown to have solutions of similarity form for combined buoyancy effects, for vertical flows adjacent to surfaces and in plumes, and the resulting equations were integrated for air and water for various practical values of the Schmidt number.
553 citations
TL;DR: In this article, the effect of small surface inclination on flow and transport is studied as a perturbation of flow over a horizontal surface, and the temperature distributions and heat transfer parameters were measured for the first time in such a flow, in air at atmospheric pressure.
149 citations
TL;DR: In this paper, a simple formulation of the boundary value problem for a wide range of values of the Prandtl number has been proposed, and results of experiments with plumes are included to emphasize the various properties of plume flow and to indicate that the large thickness of boundary region in the range of stable laminar plumes (i.e. at relatively low local Grashof numbers) should encourage the calculation of higher order approximate of the flow.
129 citations
TL;DR: In this paper, an investigation of the hydrodynamic stability of a laminar plume arising from a horizontal line source of heat was carried out using the Tollmien-Schlichting theory of small disturbances.
92 citations
TL;DR: In this article, the authors considered the natural convection flow over a horizontal, isothermal and semi-infinite surface, generated by the combined buoyancy effects of surface heating and diffusion of chemical species.
73 citations
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TL;DR: In this article, a set of Boussinesq approximations were shown to have solutions of similarity form for combined buoyancy effects, for vertical flows adjacent to surfaces and in plumes, and the resulting equations were integrated for air and water for various practical values of the Schmidt number.
553 citations
TL;DR: An exact solution to the flow due to impulsive motion of an infinite vertical plate in its own plane in the presence of i) species concentration ii) constant heat flux at the plate iii) chemical reaction of first order, has been derived by the Laplace transform technique as discussed by the authors.
Abstract: An exact solution to the flow due to impulsive motion of an infinite vertical plate in its own plane in the presence of i) species concentration ii) constant heat flux at the plate iii) chemical reaction of first order, has been derived by the Laplace-transform technique. Velocity and concentration profiles are shown on graphs. It is observed that due to the presence of first order chemical reaction, the velocity decreases but the skin-friction being positive at large values of the chemical reaction parameter, there may not occur separation of the flow near the plate.
407 citations
TL;DR: In this article, the combined free convection boundary layer flow with thermal radiation and mass transfer past a permeable vertical plate was studied when the plate was maintained at a uniform temperature with uniform species concentration and the fluid was considered to be gray, absorbing-emitting.
285 citations
TL;DR: In this paper, the free convection boundary layer flow with simultaneous heat and mass transfer in a porous medium is studied when the boundary wall moves in its own plane with suction, and asymptotic approximate solutions are obtained for the flow variables for various values of the activation energy.
Abstract: The free convection boundary layer flow with simultaneous heat and mass transfer in a porous medium is studied when the boundary wall moves in its own plane with suction. The study also incorporates chemical reaction for the very simple model of a binary reaction with Arrhenius activation energy. For large suction, asymptotic approximate solutions are obtained for the flow variables for various values of the activation energy.
262 citations