To spill or not: Short-time pouring dynamics of a toppled liquid bottle DOI
Anirban Roy, Avinash Kumar, Subhabrata Ray

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(12)

Published: Dec. 1, 2024

A typical culinary setting involves liquid condiments with different constitutive behaviors stored in jars, bottles, pitchers, or spouts. In the dynamic kitchen environment, handling these might require pouring, drizzling, squeezing, tapping, demonstrating interplay of container geometry, fluid properties, and expertise. There is, course, occasional accidental toppling. We investigate combined effects surface confinement dimensions on short-time spilling pouring dynamics a toppled cuvette. While attesting to fact that smaller cuvettes (which can be termed as capillaries well) do not spontaneously spill, larger exhibit are dependent property, viscosity, flow rheology. For Newtonian liquids, it is observed determined largely by coupling viscous gravity forces inducing non-intuitive behavior at higher conduit dimensions. The inclusion rheology for non-Newtonian liquids soup makes only an properties but also function meniscus retraction demarcating “splatter” three regimes “not spilling,” “on verge “spontaneous spilling.” delineate interactions leading motion provide mapping whether would spill if momentarily then immediately returned upright position. This study aids understanding fascinating physics could lead new kitchen, biomedical, industrial technologies.

Language: Английский

Numerical illustration of diffusive flow of blood-based tri-hybrid nanofluid generated by a curved stretching sheet using law of porosity DOI
B. Nagaraja,

K. G. Vidhya,

F. Almeida

et al.

Numerical Heat Transfer Part A Applications, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 22

Published: April 2, 2024

The study of flow blood through the vessels carries nanoparticles which opens new ways in research. This explores one such trihybrid suspended over a curved stretching surface undergoes Darcy-Forchheimer porosity model. analysis employs Cattaneo-Christov heat flux model along with chemical reaction, linear source allowing to slip and mass convection. nanofluids consist mixture titanium dioxide, iron oxide, silica mixed base fluid (blood) generate TiO2-Fe3O4-SiO2/blood hybrid nanofluids. Runge-Kutta-Fehlberg 4th–5th order technique, robust numerical was employed obtain mathematical solutions. Throughout process, all parameters, except those under examination, were kept at their default values. Additionally, various plots generated based on results illustrate obtained data. findings indicate that an increase Forchheimer number reduction velocity profile. Furthermore, radiation parameter thermal Biot leads temperature profile, while profile decreases relaxation parameter. reaction concentration Moreover, higher Brinkman Prandtl numbers enhance Nusselt number.

Language: Английский

Citations

14
Interplay of fluid rheology and micro-patterning toward modulating draining characteristics on an inclined substrate DOI
Arka Das, Avinash Kumar, Chirodeep Bakli

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(2)

Published: Feb. 1, 2024

We investigate a gravity-driven thin film flow of non-Newtonian liquid over an inclined micro-patterned surface. demonstrate the effect micro-patterning on draining rate and velocity profile by varying relative slit width (Tr) length periodic irregularities (L). unveil interplay substrate structure fluid rheology modeling using Carreau model, is varied for different values power index n. Through numerical simulations, we delineate effects inertia, viscous, capillary forces physics flow. report significant augmentation both shear-thinning shear-thickening fluids as result micro-patterning, with playing dominant role while has only minor influence drainage characteristics. However, when sole considered, enhances pseudoplastic decreases dilatant in comparison to Newtonian fluid. examine combined topography, revealing dominating at high slit-widths, greater play lower slit-widths. also that susceptibility or topography greatest low viscosity liquids. Finally, mark regimes where average surface are individually achieved. Hence, propose suitable combination engineer characteristic. Based suitability various applications, provide key simultaneously optimizing precise engineering controlling characteristics film.

Language: Английский

Citations

8
A facile design of porous heat sink optimized thermodynamically for thermo-hydraulic performance DOI
Avinash Kumar, Subradip Debnath, Chirodeep Bakli

et al.

Applied Thermal Engineering, Journal Year: 2024, Volume and Issue: 250, P. 123574 - 123574

Published: May 31, 2024

Language: Английский

Citations

6
Biomimetic microchannel structures and their topological optimization: A review DOI Creative Commons
Liang Yin,

E Jiaqiang,

Yi Tu

et al.

International Communications in Heat and Mass Transfer, Journal Year: 2025, Volume and Issue: 163, P. 108689 - 108689

Published: Feb. 11, 2025

Language: Английский

Citations

0
Confinement and wettability-driven dispersed phase hydrodynamics in cross-flow jets at low velocity and density ratios DOI
Nilanjan Mondal, Diptesh Biswas, Rabibrata Mukherjee

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

The evolution characteristics of a low-velocity dispersed phase into continuous shear flow have numerous applications across biomedical devices, chemical processes, water management in fuel cells, spray systems, film deposition, and atomizing devices. arise from complex interplay wettability, hydrodynamics, interfacial properties, which, when constrained by confined geometries such as those present fascinating multiphase-multiphysics problem. This study investigates the impact signature geometry velocity ratio between phases on phase. footprint shape generated droplet guide pressure distribution, deformation, subsequent cross-flow-induced stretching. By systematically analyzing dynamic effects capillarity, inertia, air-shear, gravity, viscosity, confinement, we classify fate liquid within classical regimes: jetting, threading, dripping. These distinct regimes are mapped using non-dimensional numbers, quasi-universal characteristic is obtained relative to ratios. findings this research contribute precise control prediction dispersed-phase which play pivotal role enhancing efficiency generation harvesting deposition techniques, coatings, point-of-care diagnostic work underscores relevance integrating experimental computational insights for optimizing interface-driven processes interdisciplinary applications.

Language: Английский

Citations

0
Systematic design of tree-like branching network microchannel heat sinks for enhanced heat transfer with nanofluids DOI

Shashi Rastogi,

Nilanjan Mondal, Chirodeep Bakli

et al.

Applied Thermal Engineering, Journal Year: 2024, Volume and Issue: 257, P. 124272 - 124272

Published: Aug. 28, 2024

Language: Английский

Citations

2
Investigating the effect of finite ionic size and solvent polarization on induced charge electro-osmosis around a perfectly polarizable cylinder DOI
Arka Das, Aditya Bandopadhyay

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(11)

Published: Nov. 1, 2024

Many industrially relevant microfluidic applications use concentrated solutions of macro-molecular solutes dissolved in polar solvents like water, which are typically deployed at high voltages. In this study, we investigate the effect finite ionic sizes and solvent polarization on induced charge electro-osmotic flow around a perfectly polarizable cylinder, electric field strengths concentrations. The is actuated by means direct current field, step response various parameters studied numerically. Finite sizes, defined through steric factor ν, modeled using modified Poisson–Nernst–Planck model. Additionally, field-dependent permittivity, characterized number A, accounts for molecular re-orientation effects. Our findings reveal an ion-size modulated decrement concentration electrical double layer augmentation field. Remarkably, resulting velocities increase with ion size. Solvent polarization, other hand, results marked reduction velocities. Steric effects, however, dominate over large range parameter space (applied voltage bulk concentration) as compared to polarization. Finally, demonstrate that unequal result asymmetries steady-state, thereby generating net electro-phoretic motion suspended particles.

Language: Английский

Citations

0
Effect of Interface Bonding on Optimizing the Heat Transfer in Substrate Board With an Array of Heat Sources DOI

Y. Aditya Varma,

N. Rino Nelson, S. P. Venkateshan

et al.

Heat Transfer, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 2, 2024

ABSTRACT Effective heat distribution in electronic circuitry is essential to improve the performance and life of components such as chips. This study presents a numerical analysis transfer on substrate board populated with an array discrete sources, assumed be placed horizontal air channel for forced convection cooling. The packages performed, taking into consideration effect thermal contact conductance (TCC) between source (chip) board. dependence temperature Reynolds number at inlet heating power from investigated velocities ranging 0.6 1.4 m/s observed significant. Temperature coefficient are systematically increase dissipation source. Two configurations—inline staggered—are analyzed, staggered configuration showing superior cooling performance. improvement attributed fact that arrangements expose fewer sources pre‐heated before it exits system. Additionally, location reaching highest found highly dependent TCC bonding material substrate. A hybrid optimization strategy employed, by combining Artificial Neural Network (ANN) Genetic Algorithm (GA) optimizing sources. ANN used predicting distribution, subsequently followed GA minimize maximum attained generating varying other control variables like thickness, velocity, generation. thickness layer varied 0.225 0.271 mm generation 1000 2000 W/m 2 . Among them, important parameter controlling optimum results obtained proposed compared simulation reasonably close.

Language: Английский

Citations

0
To spill or not: Short-time pouring dynamics of a toppled liquid bottle DOI
Anirban Roy, Avinash Kumar, Subhabrata Ray

et al.

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(12)

Published: Dec. 1, 2024

A typical culinary setting involves liquid condiments with different constitutive behaviors stored in jars, bottles, pitchers, or spouts. In the dynamic kitchen environment, handling these might require pouring, drizzling, squeezing, tapping, demonstrating interplay of container geometry, fluid properties, and expertise. There is, course, occasional accidental toppling. We investigate combined effects surface confinement dimensions on short-time spilling pouring dynamics a toppled cuvette. While attesting to fact that smaller cuvettes (which can be termed as capillaries well) do not spontaneously spill, larger exhibit are dependent property, viscosity, flow rheology. For Newtonian liquids, it is observed determined largely by coupling viscous gravity forces inducing non-intuitive behavior at higher conduit dimensions. The inclusion rheology for non-Newtonian liquids soup makes only an properties but also function meniscus retraction demarcating “splatter” three regimes “not spilling,” “on verge “spontaneous spilling.” delineate interactions leading motion provide mapping whether would spill if momentarily then immediately returned upright position. This study aids understanding fascinating physics could lead new kitchen, biomedical, industrial technologies.

Language: Английский

Citations

0