Experimental investigation of Marangoni convection in nanofluids

Advances in nanotechnology especially in nanofluids comprising of a typical base fluid saturated with nano-size metallic particles with enhanced thermophysical properties is one of the hot topics in industrial as well as engineering applications of applied mathematics. This article explores the impact of Lorentz forces and Maragoni effect on second grade nanofluid forced convective flow. A two phase model is chosen to validate the nanofluid. Series solutions are achieved through HAM after transformation of PDEs into ODEs. The Brownian motion effect, Thermophoresis and the Marangoni effect are the main influencing factors for present flow model. In addition, the influence of pertinent fluid parameters such as Schmidt number, Magnetic number and Prandtl number on the velocity, temperature and concentration profiles is discussed with the help of graphs. With an enhanced Marangoni factor the hydraulic boundary layer thickness shows enhancement.

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“………. (14) such that, ……….. (15) where Mi are constants for i=1-7. Subsequently, the zeroth order problems of deformation are written as follows:…”

Section: …… (13)mentioning

confidence: 99%

“…Aly and Ebaid [13] found exact solutions considering Marangoni effect in nanofluid flow using Laplace transformation method. Most recent articles can be seen in [14][15][16][17] and reference cited therein.…”

Section: Introductionmentioning

confidence: 99%

Marangoni Effect in Second Grade Forced Convective Flow of Water Based Nanofluid

Rasool

Zhang

Shafiq

2019

JAN

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“…Some researchers significantly contributed to this research by analyzing the different Marangoni convection behaviors. 12–14…”

Section: Introductionmentioning

confidence: 99%

Thermophoretic particle deposition in Carreau-Yasuda fluid over chemical reactive Riga plate

Abbas

Khan

Shehzad

2023

Advances in Mechanical Engineering

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Marangoni convection is very useful in coating flow technology, surfactant replacement therapy for neonatal children, microfluidics, drying of semi-conductor vapors in microelectronics, foams, and film drainage in emulsions. The behavior of gyrotactic microorganisms and chemical reaction on the Marangoni convected Carreau-Yasuda liquid flowing over Riga plate with thermophoretic particle deposition is reported in this research. The Riga plate is self-possessed of magnets and electrodes. The fluid conducted electricity and the vertical Lorentz force has been exponentially increased. Thermal and mass species phenomena are investigated within the context of Dufour and Soret impacts. The PDEs are transformed into ODEs by the implication of suitable transformations. The resulting system of equations is solved by using homotopy analysis method (HAM). Using tables and graphs, the effects of dimensionless parameters on flow fields are described. The wall drag coefficient and pertinent flow rates are organized and stated. The results revealed that the temperature, concentration, and microorganisms profiles decay but the velocity profile augmented as the Marangoni ratio parameter increases.

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“…Mat et al analyzed Marangoni phenomena in the aspect of boundary layer subjecting a nanoliquid. Gevorgyan et al carried out an experimental investigation of Marangoni convective nanofluids flow under the absorption of light. Al‐Sharafi et al analyzed the Marangoni convective fluid‐flow phenomena of water‐based carbon nanotubes (nanofluid) and found the flow velocity in agreement with the numerical data.…”

Section: Introductionmentioning

confidence: 99%

Marangoni convective nanofluid flow over an electromagnetic actuator in the presence of first‐order chemical reaction

Rasool

Shafiq

Tlili

2019

Heat Trans. Asian Res.

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The present study aims to investigate Marangoni-forced convective nanofluid flow over an electromagnetic actuator (Riga plate). A first-order homogeneous chemical reaction is considered. The thermocapillary and solutocapillary Marangoni effect developed by the surface tension is considered as a driving force for the nanofluid. In addition, Grinberg-term is accounted to involve the impact of Lorentz force impinged by the actuator in the model. A set of nonlinear ordinary differential equations is obtained via suitable transformations for a nonsimilar analysis. Series solutions are achieved through homotopy to discuss the behavior of the velocity field, thermal distribution, and concentration of the nanoparticles graphically. The variation in Nusselt and Sherwood numbers is discussed. The outcomes declared that the flow parallel to the surface of the plate is assisted by the Lorentz forces generated by electromagnetic bars of the actuator resulting in an enhancement in the fluid motion. Furthermore, the stronger Marangoni effect resulted in the declining trend of the temperature profile. The concentration of nanoparticles near the surface reduced intensive chemical reaction inside the nanofluid. K E Y W O R D S

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Experimental investigation of Marangoni convection in nanofluids

Cited by 16 publications

References 7 publications

Marangoni Effect in Second Grade Forced Convective Flow of Water Based Nanofluid

Marangoni Effect in Second Grade Forced Convective Flow of Water Based Nanofluid

Thermophoretic particle deposition in Carreau-Yasuda fluid over chemical reactive Riga plate

Marangoni convective nanofluid flow over an electromagnetic actuator in the presence of first‐order chemical reaction

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