Parametric analysis of multi membrane based pumping flow model with induced magnetic field

Bhandari, D.S.; Bhardwaj, Anjali; Tripathi, Dharmendra

doi:10.1016/j.cjph.2024.02.039

Chinese Journal of Physics

2024

DOI: 10.1016/j.cjph.2024.02.039

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Parametric analysis of multi membrane based pumping flow model with induced magnetic field

D.S. Bhandari,

Anjali Bhardwaj,

Dharmendra Tripathi

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Cited by 4 publications

References 33 publications

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Bingham plastic fluids flow analysis in multimembranes fitted porous medium

Kumar,

Bhardwaj,

Tripathi

2024

Chinese Journal of Physics

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Bingham plastic fluids flow analysis in multimembranes fitted porous medium

Kumar,

Bhardwaj,

Tripathi

2024

Chinese Journal of Physics

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Optically induced dielectrophoresis for continuous separation and purification of C. vulgaris and H. pluvialis

Bian,

Wu,

et al. 2024

Physics of Fluids

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Marine microalgae are widely present in the natural environment, exhibiting a significant economic value. However, during the inoculation and cultivation process of microalgae, the introduction of unwanted algae is bound to trigger nutrient competition, leading to a decrease in the growth rate of microalgae and consequently impacting their economic value in production. To address this issue, this study integrates the optically induced dielectrophoresis (ODEP) manipulation technology based on the continuous flow in a microfluidic system. A two-stage cell filter, utilizing two virtual optical spots, is designed and manufactured. Leveraging the size differences between microalgae, continuous separation and purification of mixed samples containing Chlorella vulgaris and Haematococcus pluvialis are achieved within microchannels. Additionally, optimal ODEP manipulation conditions for mixed algal liquid samples, comprising C. vulgaris and H. pluvialis, are demonstrated, including appropriate alternating current voltage (6 V), alternating current frequency (100 kHz), light spot width (40 μm), and sample flow rate (0.9 μl/min). Analysis of mixed liquid samples collected at the chip's outlet reveals a reduction in the proportion of H. pluvialis from 37.5% to 1.2% after separation. In summary, this study proposes an ODEP microfluidic system capable of continuously separating and purifying microalgae with different biological characteristics, showcasing its potential as an alternative to traditional labor-intensive microalgae separation techniques.

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Electro-osmotic flow and heat transfer in Jeffery fluid: A multi-membrane microchannel model

Vaidya,

Choudhari,

Prasad

et al. 2024

Physics of Fluids

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Microscale heat transfer is vital for the performance of smart thermal devices like heat sinks, thermosyphons, and microheat pipes. This study introduces a biothermal pumping flow model based on a multi-membrane pumping mechanism that leverages microscale heat transfer. The model describes rhythmic contraction and relaxation of membranes, combined with electro-osmosis in Jeffery fluid flow within a vertical microchannel of finite length. Two membranes on the microchannel walls, with varying amplitudes, diameters, and phase lags, generate pressure that moves fluid in both directions through contraction and expansion cycles. The model is based on the conservation of mass and momentum, using a low Reynolds number approximation to capture microscale transport phenomena at biomedical scales. Dimensionless conservation equations are analytically solved under no-slip boundary conditions, with results computed in MATLAB for clarity. Axial velocity results are simulated and verified using the optimal homotopy analysis method. The model explores the influence of key parameters (UHS, me, λ, Gr, β) on pressure gradient, velocity distribution, volumetric flow rates, skin friction, Nusselt number, and stream function. The findings demonstrate that pressure from membrane motion is significantly affected by thermal effects and buoyancy forces, and flow and pumping characteristics are largely determined by the fluid's rheological qualities and the geometrical features of the membrane. This study provides novel ideas for enhancing the functionality and design of smart thermal devices while also advancing microscale heat transfer technology.

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Parametric analysis of multi membrane based pumping flow model with induced magnetic field

Cited by 4 publications

References 33 publications

Bingham plastic fluids flow analysis in multimembranes fitted porous medium

Bingham plastic fluids flow analysis in multimembranes fitted porous medium

Optically induced dielectrophoresis for continuous separation and purification of C. vulgaris and H. pluvialis

Electro-osmotic flow and heat transfer in Jeffery fluid: A multi-membrane microchannel model

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