New exact and numerical solutions for the effect of suction or injection on flow of nanofluids past a stretching sheet
| Autor: | Nader Y. Abd Elazem |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
analytical and numerical solutions
Suction nanofluids suction or injection Computer Networks and Communications General Chemical Engineering 020208 electrical & electronic engineering General Engineering 02 engineering and technology Mechanics boundary layer 021001 nanoscience & nanotechnology Engineering (General). Civil engineering (General) Physics::Fluid Dynamics Boundary layer Nanofluid Flow (mathematics) Modeling and Simulation new analytical and numerical solutions 0202 electrical engineering electronic engineering information engineering TA1-2040 0210 nano-technology stretching sheet |
| Zdroj: | Nonlinear Engineering, Vol 8, Iss 1, Pp 172-178 (2019) |
| ISSN: | 2192-8029 2192-8010 |
| Popis: | The flow of nanofluids past a stretching sheet has attracted much attention due to its wide applications in industry and engineering. Theoretical and numerical solutions have been discussed in this paper for studying the effect of suction or injection on flow of nanofluids past a stretching sheet. In the absence of thermophoresis the analytical exact solution of the stream function was obtained in terms of exponential function, while the exact solutions for temperature and nanoparticle volume fraction were obtained in terms of the generalized incomplete gamma function. In addition, in the presence of thermophoresis, the exact solutions are not available. Therefore, the numerical results, carried out by using Chebyshev collocation method (ChCM). It is found that a good agreement exists between the present results and with those published works. Useful results for temperature profile, concentration profile, reduced Nusselt number and reduced Sherwood number are discussed in details graphically. It was also demonstrated that both temperature and concentration profiles decrease by an increase from injection to suction. Finally, the present results showed that increase of the wall mass transfer from injection to suction decreased both reduced Nusselt number and the reduced Sherwood number when Brownian motion parameter and Lewis number increased. |
| Databáze: | OpenAIRE |
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