Numerical analysis of electric force influence on heat transfer in a channel flow (theory based on saturated porous medium approach)

Ayuttaya, Suwimon Saneewong Na; Chaktranond, Chainarong; Rattanadecho, Phadungsak

doi:10.1016/j.ijheatmasstransfer.2013.04.010

Cited by 19 publications

(6 citation statements)

References 20 publications

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“…In this numerical study based on the concept of an electrokinetic flow, the electrical voltage and time were varied in a range of 0-20 kV, and 0-10 s, respectively. From previous studies [21], the maximum electric field was increased by increasing the electrical voltage. A graph of the maximum electric field of EHD shows a variable straight line indicating the electrical voltage.…”

Section: Resultsmentioning

confidence: 70%

“…Dielectric properties include dielectric constant and dissipation factor, in which the dielectric constant is usually used to describe the dielectric characterization of the material. From assumption, the dielectric properties are constant and homogeneity [21]. Therefore, the second and third terms on the right-hand side of Eq.…”

Section: Analysis Of Electric Field In a Vertical Flow Modelmentioning

confidence: 99%

“…The setting is considered both in its subdomain and boundary setting and the option with constant is defined by the classical and thermophysical properties of blood and fat within the vertical flow model. In addition, the electric field appears by the electric force and is affected by the flow field, resulting in the enhancement of heat transfer [21]. The electrokinetic flow is induced by the flow field, pressure field, and vorticity, but it is not influenced by the human vascular system.…”

Section: Physical Modelmentioning

confidence: 99%

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Implementation of Blood Flow Transport under Electrokinetic Flow Through Porous Fat Depot Within the Vertical Flow Model

Ayuttaya¹,

Rattanadecho²

2021

IJHT

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In this numerical study based on the concept of electrokinetic flow, a vertical flow model has been developed for the implementation of blood flow transport. Electrical voltage and time were varied in a range of 0 -20 kV, and 0 -10 s, respectively. In the vertical upward flow model, blood flows through a porous fat deposit while presenting the electric field, flow pattern, pressure field, vorticity field and the temperature field, both with and without electrokinetic flow. The results show that blood flow moves upward within the vertical flow model but electric field is not appeared in case of absent the electrokinetic flow. With the electrokinetic flow, the electric field is more concentrated when a higher electrical voltage is applied and the electrical voltage is not dependent on time, but the electric field increases when the electrical voltage is increased. The flow pattern, pressure field, vorticity field and temperature field are not in the same pattern as the electric field but they are induced by the electric field. In addition, the electric value, velocity, pressure and vorticity increase with increasing electrical voltage and the temperature increases with increasing electrical voltage and time. Finally, electrokinetic flow can induce the temperature within a porous fat deposit so that the heating zone is enhanced.

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Section: Resultsmentioning

confidence: 70%

Section: Analysis Of Electric Field In a Vertical Flow Modelmentioning

confidence: 99%

Section: Physical Modelmentioning

confidence: 99%

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Implementation of Blood Flow Transport under Electrokinetic Flow Through Porous Fat Depot Within the Vertical Flow Model

Ayuttaya¹,

Rattanadecho²

2021

IJHT

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“…From the previous study (Saneewong Na Ayuttaya et al, 2013), the electric flow is not increased with increasing the inlet jet airflow. It means the inlet jet airflow is not affected by the electric flow.…”

Section: Electric Field Characteristics Under Electrohydrodynamics Forcementioning

confidence: 68%

“…First, the mechanism of EHD is described by Yabe et al (1978). The EHD refers to the coupling of an electric field with fluid flow and this technique is clearly explained by Saneewong Na Ayuttaya et al (2013). When an electrical voltage is introduced to airflow, ions from a sharp electrode move forwards to the ground.…”

Section: Modeling Analysismentioning

confidence: 99%

Numerical analysis of jet airflow impact inclined flat plate under electrohydrodynamics force in a porous medium

Ayuttaya¹

2020

HFF

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Purpose This study aims to present a numerical analysis of the behavior of the electric field and flow field characteristics under electrohydrodynamics (EHD) force. The influence of the jet airflow under the EHD force is investigated when it impacts the inclined flat plate. Design/methodology/approach The high electrical voltage and angle of an inclined flat plate are tested in a range of 0–30 kV and 0–90°, respectively. In this condition, the air is set in a porous medium and the inlet jet airflow is varied from 0–2 m/s. Findings The results of this study show that the electric field line patterns increase with increasing the electrical voltage and it affects the electric force increasing. The angle of inclined flat plate and the boundary of the computational model are influenced by the electric field line patterns and electrical voltage surface. The electric field pattern is the difference in the fluid flow pattern. The fluid flow is more expanded and more concentrated with increasing the angle of an inclined flat plate, the electrical voltage and the inlet jet airflow. The velocity field ratio is increased with increasing the electrical voltage but it is decreased with increasing the angle of the inclined flat plate and the inlet jet airflow. Originality/value The maximum Reynolds number, the maximum velocity field and the maximum cell Reynolds number are increased with increasing the electrical voltage, the inlet jet airflow and the angle of the inclined flat plate. In addition, the cell Reynolds number characteristics are more concentrated and more expanded with increasing the electrical voltage. The pattern of numerical results from the cell Reynolds number characteristics is similar to the pattern of the fluid flow characteristics. Finally, a similar trend of the maximum velocity field has appeared for experimental and numerical results so both techniques are in good agreement.

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Numerical analysis of the EHD driven flow with heat transfer in a smooth channel using multiple collectors

et al. 2017

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Numerical analysis of electric force influence on heat transfer in a channel flow (theory based on saturated porous medium approach)

Cited by 19 publications

References 20 publications

Implementation of Blood Flow Transport under Electrokinetic Flow Through Porous Fat Depot Within the Vertical Flow Model

Implementation of Blood Flow Transport under Electrokinetic Flow Through Porous Fat Depot Within the Vertical Flow Model

Numerical analysis of jet airflow impact inclined flat plate under electrohydrodynamics force in a porous medium

Numerical analysis of the EHD driven flow with heat transfer in a smooth channel using multiple collectors

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