Abstract
In this article, the primary focus is to investigate the heat transfer effects with viscous compressible laminar flow in the permeable elliptic cylinder. The Reynolds number is kept 100 for flow to be laminar. The physics of heat transfer is selected to be coupled with the laminar flow. The results for particular step-size time for Velocity distribution, pressure profile, temperature profile, isothermal temperature contours, and drag coefficient have been analyzed. Mesh has been generated through COMSOL, mesh entities have been elaborated statistically. The maximum and minimum velocity profile is observed at the elliptical cylinder’s walls and upper, lower boundary respectively. The maximum velocity observed is 2.22 m/s. Pressure profile around elliptic corners is found maximum, distinct patterns are observed even under the influence of applied heat. Temperature is observed maximum at walls but it gradually increases as moving from the upper boundary towards the lower boundary. The isothermal contour patterns are observed maximum near the walls, drag coefficient of gradual decrease is observed. COMSOL multi-physics is utilized for mathematical modeling of problems and the Backward-Differentiation-Formula has been exploited to handle problems numerically. The results will help greatly to understand the characterizations of viscous fluids and in industries like air furnaces and automobile cooling systems.
Highlights
K Temperature in Kelvin ur, uθ, uz Velocity components in r, θ, and z Tw Wall temperature T∞ Free stream velocity
Thermal conductivity plays a vital role in increasing the heat transfer coefficient of nanofluids
The model governing Eqs. (1–3) comes up by default method in COMSOL, as we model the geometry
Summary
K Temperature in Kelvin ur , uθ , uz Velocity components in r, θ, and z Tw Wall temperature T∞ Free stream velocity. The metallic and non-metallic nanofluid particle shapes are formed by semiconductors, metals, and nitride ceramics. These nanofluids are considered strong conductive mediums. In the base fluids, when a nano-sized particle is distributed it automatically enhances the thermal conductivity of n anofluid[1]. Nadeem et al.[2] explored three-dimensional hybrid nanofluid at stagnation point to analyze heat transfer coefficient past a circular cylinder. The nanofluids are generated by distributing nanometer-sized particles in a base liquid. These fluids are significantly utilized in industries to enhance the heat and mass transfer rates. Numerous scientists have examined nanofluids to study different physical aspects, the hybrid and nanofluids have been utilized[12,13,14,15], referred for study purposes
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