Thermo-physical characteristics of liquids and gases near a rotating disk

Mair Khan, T. Salahuddin and S.O. Stephen

Chaos, Solitons & Fractals, 2020, vol. 141, issue C

Abstract: In this study, we consider the thermo-physical properties of Newtonian boundary layer fluid flow near a heated rotating disk. The viscosity is assumed to vary inversely as a linear function of temperature while thermal and concentration diffusion coefficients vary directly as linear functions of temperature and concentration. Temperature dependent viscosity and conductivity are adopted to analyze the flow phenomena. Numerical solution of the governing equations is then performed by using a fifth order Runga-Kutta Fehlberg integration scheme with a shooting method. The effect of viscosity for gases shows an increase behavior of the velocity profiles but for liquids the opposite behavior is noticed. Variable thermal conductivity and diffusivity also increase the temperature and concentration distributions. We determine the mean flow profiles and give a physical interpretation of the problem through figures and tables. Correlations in terms of temperature, concentration and viscosity are plotted graphically. Comparison has been made with available results in the literature, achieving good agreement.

Keywords: Viscous fluid; Plastic dynamic viscosity; Variable thermal conductivity; Variable diffusivity; Rotating disk; Shooting method (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:141:y:2020:i:c:s0960077920307001

DOI: 10.1016/j.chaos.2020.110304

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