Modelling and analysis of the unsteady flow and heat transfer of immiscible micropolar and Newtonian fluids through a pipe of circular cross section

Devakar, M.; Raje, Ankush

doi:10.1007/s40430-018-1233-2

Cited by 12 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies on the flow of two immiscible couple stress-Newtonian fluids through a porous and non-porous medium in the horizontal cylinder are performed by Devakar and Ramgopal [2]. Devakar and Ankush Raje [3] investigated the unsteady flow and heat transfer of immiscible Micropolar-Newtonian fluids flow in the pipe. The Electroosmosis technique can be utilized in many systems to generate the flow field.…”

Section: Introductionmentioning

confidence: 99%

A Study on Electro-Hydrodynamic Flow of Two Immiscible Fluids in a Circular Tube

R.,

2023

Preprint

View full text Add to dashboard Cite

A mathematical model has been developed for studying the flow of two immiscible fluids under the electrokinetic effects through a circular tube. The proposed model has been divided into two regions: The core region is non-Newtonian (Thixotropic) and the peripheral region is a Newtonian fluid. The non-linear nature of the modified Navier Stokes equation is governed under the electrokinetic effect and solved analytically by taking pressure gradient as constant. The numerical analysis on simultaneous effects of the power-law index, yield stress, structural parameter, consistency index and electro-osmotic on axial velocity and flow rate were discussed and the results were presented graphically. A comparison of axial velocity profiles for certain values of the parameters has been made to obtain the profiles for the power-law-Newtonian model and Newtonian-Newtonian fluid model.

show abstract

Section: Introductionmentioning

confidence: 99%

A Study on Electro-Hydrodynamic Flow of Two Immiscible Fluids in a Circular Tube

R.,

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…In the beginning, the thermal management was focused on heat sink solutions [1][2][3][4][5][6][7]. But as heat dissipation rate continued to increase, the focus shifted to two-phase heat pipe cooling techniques Technical Editor: Francis HR Franca, Ph.D. [8][9][10][11]. The thermal management challenges were not limited to electronic industries [12,13].…”

Section: Introductionmentioning

confidence: 99%

Influence of the channel profile on the thermal resistance of closed-loop flat-plate oscillating heat pipe

Mehta

Mehta²,

Patel

2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

The closed-loop flat-plate oscillating heat pipe (CL-FPOHP) is a new two-phase heat transfer device for an effective thermal management in different systems. A number of theoretical and experimental investigations have been carried out on the CL-FPOHP in the past decades after its invention. However, due to the operational mechanism of the CL-FPOHP, the effects of channel profile on the thermal resistance have not been completely revealed so far. This paper aims at discussing the thermal resistance and thermal conductivity by changing the shape and size of the CL-FPOHPs channel. The thermal resistances of the CL-FPOHPs were investigated by varying the channel shape from square to circular, channel sizes from 2 × 2 mm 2 to 5 × 5 mm 2 , and heat load from 10 to 120 W. The pure copper was used to develop the CL-FPOHP and charged with the acetone with a charge ratio of 70%. The most suitable channel shape for the CL-FPOHP was found to be a square channel, and the most suitable channel size was observed to be 2 × 2 mm 2. The highest thermal conductivity of the CL-FPOHP reached to 2137 W/m °C. Keywords Flat-plate oscillating heat pipe • Two-phase heat transfer • Thermal resistance • Channel profile List of symbols Bo Bond number, g(l − v) r h 2 g Gravitational force (m/s 2) l Liquid density (kg/m 3) Subscripts CL-FPOHP Closed-loop flat-plate oscillating heat pipe FPOHP Flat-plate oscillating heat pipe TOHP Tubular oscillating heat pipe e Evaporator c Condenser l Liquid v Vapor W Watt L Distance of the two centers of the evaporator and condenser A Total cross-sectional area of CL-FPOHP

show abstract

Heat and mass transfer analysis of non‐miscible couple stress and micropolar fluids flow through a porous saturated channel

Kumar,

Yadav

2024

Z Angew Math Mech

View full text Add to dashboard Cite

This study examines the flow rate, Bejan number transportation, concentration distribution and thermal characteristics of an immiscible couple stress‐ micropolar fluids within a porous channel. The authors focus on the effects of heat radiation and an angled magnetic field on the thermal dispersion, concentration distribution and entropy formation of two different types of incompressible immiscible micropolar and couple stress fluids inside a porous channel. Here, the static walls of the channel are isothermal, and the pressure gradient in the flow domain's entrance zone is constant. In this flow problem, we tried to simulate thermal radiation in the energy equation by applying Rosseland's diffusion approximation. To solve the problem, the authors have used no‐slip conditions at the channel's immovable walls, a continuity of temperature profile, shear stresses, thermal flux, linear velocity, and micro‐rotational velocity over the fluid‐fluid interface. The equations that govern the flow of immiscible fluids are solved using a well‐defined methodology and both the temperature and flow field are then evaluated using a closed‐form solution. The mathematical results of the thermal distribution and flow velocity are used to derive the Bejan number distribution and the entropy generation number. Graphical discussions are used to illustrate the impact of different emerging factors on the model's flow and thermal properties, which describe the major impact of the proposed model. These variables involve the micropolarity parameter, Reynolds number, inclination angle parameter, radiation parameter, and Hartmann number. The outcomes of the present models are corroborated by previously established results available in the literature.

show abstract

Modelling and analysis of the unsteady flow and heat transfer of immiscible micropolar and Newtonian fluids through a pipe of circular cross section

Cited by 12 publications

References 27 publications

A Study on Electro-Hydrodynamic Flow of Two Immiscible Fluids in a Circular Tube

A Study on Electro-Hydrodynamic Flow of Two Immiscible Fluids in a Circular Tube

Influence of the channel profile on the thermal resistance of closed-loop flat-plate oscillating heat pipe

Heat and mass transfer analysis of non‐miscible couple stress and micropolar fluids flow through a porous saturated channel

Contact Info

Product

Resources

About