Computational simulation of water removal from a flat plate, using surface acoustic waves

Rahni, Mohammad Taeibi; Taleghani, Arash Shams; Sheikholeslam, M.; Ahmadi, Goodarz

doi:10.1016/j.wavemoti.2021.102867

Cited by 13 publications

(5 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dynamic behavior of droplets under microgravity conditions was affected by the Bond number with droplets able to move vertically on the surface when the Bond number exceeded a critical value [ 65 ]. Regarding drop removal using surface acoustic waves on a flat surface, LBM simulation results showed that the contact time was reduced by three times when a pair of SAWs with the same amplitude and frequency were applied [ 66 ].…”

Section: Fundamentals Of Adementioning

confidence: 99%

A Comprehensive Review of Surface Acoustic Wave-Enabled Acoustic Droplet Ejection Technology and Its Applications

Ning,

Lei,

et al. 2023

Micromachines

View full text Add to dashboard Cite

This review focuses on the development of surface acoustic wave-enabled acoustic drop ejection (SAW-ADE) technology, which utilizes surface acoustic waves to eject droplets from liquids without touching the sample. The technology offers advantages such as high throughput, high precision, non-contact, and integration with automated systems while saving samples and reagents. The article first provides an overview of the SAW-ADE technology, including its basic theory, simulation verification, and comparison with other types of acoustic drop ejection technology. The influencing factors of SAW-ADE technology are classified into four categories: fluid properties, device configuration, presence of channels or chambers, and driving signals. The influencing factors discussed in detail from various aspects, such as the volume, viscosity, and surface tension of the liquid; the type of substrate material, interdigital transducers, and the driving waveform; sessile droplets and fluid in channels/chambers; and the power, frequency, and modulation of the input signal. The ejection performance of droplets is influenced by various factors, and their optimization can be achieved by taking into account all of the above factors and designing appropriate configurations. Additionally, the article briefly introduces the application scenarios of SAW-ADE technology in bioprinters and chemical analyses and provides prospects for future development. The article contributes to the field of microfluidics and lab-on-a-chip technology and may help researchers to design and optimize SAW-ADE systems for specific applications.

show abstract

Section: Fundamentals Of Adementioning

confidence: 99%

A Comprehensive Review of Surface Acoustic Wave-Enabled Acoustic Droplet Ejection Technology and Its Applications

Ning,

Lei,

et al. 2023

Micromachines

View full text Add to dashboard Cite

show abstract

“…Surface acoustic waves have been utilized to manipulate water droplets on solid surfaces (Sheikholeslam Noori et al, 2020a;Sheikholeslam Noori et al, 2020b;Noori et al, 2020;Sheikholeslam Noori et al, 2021). They have been proposed as a potential technique to prevent water droplet icing on aircraft wings in areas not covered by the anti-ice system (Taeibi Rahni et al, 2022). Furthermore, fluidic actuators can inject momentum into low momentum areas, providing significant benefits (Abdolahipour, 2023).…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic design of a double slotted morphed flap airfoil– a numerical study

Shahrokhi,

Taeibi Rahni,

Akbari

2024

Front. Mech. Eng.

Self Cite

View full text Add to dashboard Cite

Introduction:The objective of this study is to develop and simulate a double slotted morphed flap with the intention of reducing drag and enhancing lift, thereby leading to a smaller flap size and reduced weight.Methods:A flap was meticulously designed to accommodate conditions at Mach 0.2 and Reynolds numbers of 4.7×106. To conduct the simulation, ANSYS FLUENT flow solver and POINTWISE grid generator were utilized. The morphing technique employed involved adjusting both flap mean camber and flap slots, ensuring minimal flow interferences. By discretizing the flap mean camber line, various flap geometries were achieved.Results and Discussions:The findings reveal a significant enhancement in the airfoil’s aerodynamic efficiency attributed to the implementation of the new flap design. The study shows that utilizing double-slotted morphing in the NACA 4412 airfoil at a 30° flap deflection angle increased the lift coefficient by 82% compared to the un-morphed state. A comparison of lift coefficients between this research and the NACA 4412 split flap at a 60° deflection angle indicates that the double-slotted morphing in the NACA 4412 airfoil at a smaller deflection angle of 30° results in a 14% higher maximum lift coefficient.

show abstract

“…Many theoretical, experimental, and numerical studies are performed in these aspects to analyze wake structure under the effects of different parameters. Researchers (Gad-el-Hak, 2000;Salmasi et al, 2013;Mohammadi and Taleghani, 2014;Abdolahipour et al, 2022a;Rahni et al, 2022;Shams Taleghani and Sheikholeslam Noori, 2022) investigated flow control basics and strategies to achieve transition delay, detachment prevention, lift augmentation, drag reduction, vortex suppression, noise reduction, and heat and mass transfer enhancements. Taleghani, A. S., et al (Bajalan et al, 2011;Mirzaei et al, 2012;Taleghani et al, 2018;Noori et al, 2020;Abdolahipour et al, 2021;Noori et al, 2021;Abdolahipour et al, 2022a;Abdolahipour et al, 2022b) investigated different phenomena like ionic wind velocity in quiescent air at atmospheric pressure caused by a dielectric barrier discharge plasma actuator, effect of modulated pulse jet vortex generator, Enhancing pressure on a supercritical high-lift wing by applying a Modular and Simple Pulse Jet Vortex Generator, flow field properties of a baseline single pulsed jet actuator, airfoil's active flow control using a plasma actuator, acoustic streaming in a drop created by surface acoustic waves, a sessile drop's dynamic behavior, and behavior of a circular cylinder with an airfoil through experimental methods.…”

Section: Introductionmentioning

confidence: 99%

Extensive study of flow characters for two vertical rectangular polygons in a two-dimensional cross flow

Gul,

Nazeer,

Sana

et al. 2024

Front. Mech. Eng.

View full text Add to dashboard Cite

Fluid dynamics problems have a significant impact on the growth of science and technologies all over the world. This study investigates viscous fluid’s behavior when interacting with two rectangular polygons positioned vertically and aligned in a staggered configuration. Two physical parameters, Reynolds Number and Gap spacings, are discussed using the Lattice Boltzmann Method for two-dimensional flow. Results are discussed in vortex snapshots, time trace histories of drag and lift coefficient, and power spectra analysis of lift coefficient. Nine distinct flow vortex streets are identified based on increasing gap spacings between the pair of two rectangular polygons. The vortex shedding mechanism is disturbed at small gap spacings and becomes optimal at large gap spacings. Different physical parameters of practical importance, like mean drag coefficient, root mean square values of drag coefficient, root mean square values of lift coefficient, and Strouhal number, approach the single rectangular polygon value at large gap spacings.

show abstract

Computational simulation of water removal from a flat plate, using surface acoustic waves

Cited by 13 publications

References 40 publications

A Comprehensive Review of Surface Acoustic Wave-Enabled Acoustic Droplet Ejection Technology and Its Applications

A Comprehensive Review of Surface Acoustic Wave-Enabled Acoustic Droplet Ejection Technology and Its Applications

Aerodynamic design of a double slotted morphed flap airfoil– a numerical study

Extensive study of flow characters for two vertical rectangular polygons in a two-dimensional cross flow

Contact Info

Product

Resources

About