3-D EHD enhanced natural convection over a horizontal plate flow with optimal design of a needle electrode system

Jiin Yuh Jang, Chun Chung Chen

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The present study is intended to investigate the effect of electrohydrodynamic (EHD) enhanced heat transfer on natural convection flow. The flow is assumed to be three-dimensional, turbulent and steady. An experiment was carried out to verify the accuracy of the numerical results and to provide electric properties such as induced current and power consumption to be used as the criteria for the numerical solution procedures. An optimal analysis was carried out along with the simplified conjugate-gradient method, where the objective function was defined as the heat transfer enhancement per input power, which is maximized by searching for the optimum electrode pitch (SL) and height (H) combination. A search for the optimum electrode pitch (SL) and electrode height (H), ranging from 50 mm < SL < 200 mm and 15 mm < H < 55 mm, respectively, with V0 (12, 14, 16, 18 and 20 kV) and DT (33, 53 and 73 K), was performed, respectively. The results showed that the maximum heat transfer enhancement per power consumption reached 4.42-9.72.

Original languageEnglish
Article number1670
JournalEnergies
Volume11
Issue number7
DOIs
Publication statusPublished - 2018 Jan 1

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Electrohydrodynamics
Natural Convection
Natural convection
Needles
3D
Electrode
Horizontal
Heat Transfer Enhancement
Heat transfer
Electrodes
Electric power utilization
Power Consumption
Conjugate gradient method
Induced currents
Electric properties
Conjugate Gradient Method
Heat Transfer
Objective function
Numerical Solution
Verify

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

Cite this

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abstract = "The present study is intended to investigate the effect of electrohydrodynamic (EHD) enhanced heat transfer on natural convection flow. The flow is assumed to be three-dimensional, turbulent and steady. An experiment was carried out to verify the accuracy of the numerical results and to provide electric properties such as induced current and power consumption to be used as the criteria for the numerical solution procedures. An optimal analysis was carried out along with the simplified conjugate-gradient method, where the objective function was defined as the heat transfer enhancement per input power, which is maximized by searching for the optimum electrode pitch (SL) and height (H) combination. A search for the optimum electrode pitch (SL) and electrode height (H), ranging from 50 mm < SL < 200 mm and 15 mm < H < 55 mm, respectively, with V0 (12, 14, 16, 18 and 20 kV) and DT (33, 53 and 73 K), was performed, respectively. The results showed that the maximum heat transfer enhancement per power consumption reached 4.42-9.72.",
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3-D EHD enhanced natural convection over a horizontal plate flow with optimal design of a needle electrode system. / Jang, Jiin Yuh; Chen, Chun Chung.

In: Energies, Vol. 11, No. 7, 1670, 01.01.2018.

Research output: Contribution to journalArticle

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