Enhancing thermal conductivity of fluids with nano-particles
01 Jan 1995-Vol. 231, pp 99-105
About: The article was published on 1995-01-01 and is currently open access. It has received 7263 citations till now. The article focuses on the topics: Thermal conductivity & Nanoparticle.
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TL;DR: In this article, the effects of the controlling parameters (namely, stretching/shrinking, velocity slip, thermal slip, mass slip, Darcy number, radiation conduction, buoyancy ratio parameter, and Lewis number) on the dimensionless velocity, temperature, nanoparticle volume fraction, velocity gradient, temperature gradient, and nanoparticle fraction gradient are shown in graphi...
Abstract: Steady two-dimensional laminar mixed convective boundary-layer slip nanofluid flow in a Darcian porous medium due to a stretching/shrinking sheet is studied theoretically and numerically. A thermal radiative effect is incorporated in the model. The governing transport, partial differential equations, along with the boundary conditions, are transformed into a dimensionless form and then, via a linear group of transformation, a system of coupled similarity differential equations is derived. The transformed equations are solved numerically using the Runge–Kutta–Fehlberg fourth–fifth-order numerical quadrature method from Maple symbolic software. The effects of the controlling parameters (namely, stretching/shrinking, velocity slip, thermal slip, mass slip, Darcy number, radiation conduction, buoyancy ratio parameter, and Lewis number) on the dimensionless velocity, temperature, nanoparticle volume fraction, velocity gradient, temperature gradient, and nanoparticle volume fraction gradient are shown in graphi...
97 citations
Cites background from "Enhancing thermal conductivity of f..."
...Nanofluids comprise base fluids with metallic/nonmetallic nanoparticles that serve to enhance thermal conductivity [3]....
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TL;DR: In this article, the experimental performance analysis of a locally developed Parabolic Trough Collector (PTC) system having concentration ratio of 11 for domestic heating applications was designed to evaluate the performance of the system.
97 citations
TL;DR: In this paper, the effects of various parameters on the flow are discussed through graphs and tables, and the effect of thermal convection of nanoparticles has increased the temperature distribution, which helps in destroying the cancer cells during the drug delivery process.
96 citations
Cites methods from "Enhancing thermal conductivity of f..."
...The nanofluid was first proposed by Choi [1]....
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...Choi, S.U.S.: Enhancing thermal conductivity of fluids with nanoparticles....
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TL;DR: In this paper, a numerical analysis has been presented to investigate the unsteady mixed convection boundary layer flow and heat transfer due to uncertainties of thermal conductivity and dynamic viscosity of nanofluid over a stretching vertical surface.
96 citations
TL;DR: In this article, an analytical investigation is applied for unsteady flow of a nanofluid squeezing between two parallel plates, and the results were compared with those obtained from Collocation Method (CM), Least Square Method (LSM), and the established Numerical Method (Fourth order Runge-Kutta) scheme.
Abstract: An analytical investigation is applied for unsteady flow of a nanofluid squeezing between two parallel plates. Collocation Method (CM), Least Square Method (LSM) and fourth-order Runge-Kutta numerical method (NM) are used to solve the present problem. The results were compared with those obtained from Collocation Method (CM), Least Square Method and the established Numerical Method (Fourth order Runge-Kutta) scheme. It demonstrated LSM and CM presented accurate results. Water (H2O) was the base fluid that contained different kinds of nanoparticles that is, Copper, Silver, Alumina and Titanium Oxide. The effective thermal conductivity and viscosity of the nanofluid are calculated using the Maxwell–Garnetts (MG) and Brinkman models, respectively. The analytical investigation is carried out for various governing parameters such as the squeeze number, nanoparticle volume fraction and Eckert number. As a main outcome from the present study, it is observed that the results of LSM are more accurate than CM and they are in excellent agreement with numerical ones, so LSM can be used for finding analytical solutions of coupled equations in nanofluid problems easily. The results demonstrate when two plates are moving together, the Nusselt number increases b of nanoparticle volume fraction and Eckert number while it decreases with growth of the squeeze number.
96 citations
Cites background from "Enhancing thermal conductivity of f..."
...nanofluids) in the range of sizes up to 100 nm [16]....
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