Bio-inspired self-agitator for convective heat transfer enhancement

Li, Zheng; Xu, Xianchen; Li, Kuojiang; Chen, Yangyang; Ke, Zhaoqing; Wang, Sheng; Chen, Hsiu-Hung; Huang, Guoliang; Chen, Chung-Lung; Chen, Chien-Hua

doi:10.1063/1.5046502

Title: Bio-inspired self-agitator for convective heat transfer enhancement

Abstract

Convective heat transfer plays an important role in both the fundamental research and the development of high-performance heat exchangers. Inspired by blades of grass vibrating in the wind, we developed a self-agitator for convective heat transfer enhancement. Because of fluid-structure interactions, the agitator, with self-sustained vibration, can generate strong vortices to significantly break the thermal boundary layer and improve fluid mixing for enhanced convective heat transfer. In particular, we establish a methodology to link the vorticity field at a preferred frequency to the optimal improvement in the convective heat transfer. To identify the self-agitator preferred frequency, mode analysis is performed with simulation results using dynamic mode decomposition. Experimental results are also obtained to further validate the proposed approach. These results show that the proposed self-agitator design can improve the convective heat transfer by 120% in a conventional heat exchanger without additional pumping power requirements and can achieve a Nusselt number of up to 30 within the laminar flow region, which is improved by 200% with the same Reynolds number compared to the clean channel.

Authors:

Li, Zheng; Xu, Xianchen;

; Chen, Yangyang; Ke, Zhaoqing;

; Chen, Hsiu-Hung; Huang, Guoliang; Chen, Chung-Lung; Chen, Chien-Hua

Publication Date:: Thu Sep 13 00:00:00 EDT 2018

Sponsoring Org.:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:: 1470782

Grant/Contract Number:: AR0000582

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Name: Applied Physics Letters Journal Volume: 113 Journal Issue: 11; Journal ID: ISSN 0003-6951

Publisher:: American Institute of Physics

Country of Publication:: United States

Language:: English

Citation Formats


                    Li, Zheng, Xu, Xianchen, Li, Kuojiang, Chen, Yangyang, Ke, Zhaoqing, Wang, Sheng, Chen, Hsiu-Hung, Huang, Guoliang, Chen, Chung-Lung, and Chen, Chien-Hua. Bio-inspired self-agitator for convective heat transfer enhancement.  United States: N. p., 2018. 
Web.  doi:10.1063/1.5046502.

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                    Li, Zheng, Xu, Xianchen, Li, Kuojiang, Chen, Yangyang, Ke, Zhaoqing, Wang, Sheng, Chen, Hsiu-Hung, Huang, Guoliang, Chen, Chung-Lung, & Chen, Chien-Hua. Bio-inspired self-agitator for convective heat transfer enhancement.  United States.  https://doi.org/10.1063/1.5046502

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                    Li, Zheng, Xu, Xianchen, Li, Kuojiang, Chen, Yangyang, Ke, Zhaoqing, Wang, Sheng, Chen, Hsiu-Hung, Huang, Guoliang, Chen, Chung-Lung, and Chen, Chien-Hua. Thu .  
"Bio-inspired self-agitator for convective heat transfer enhancement".  United States.  https://doi.org/10.1063/1.5046502.

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@article{osti_1470782,

  title        = {Bio-inspired self-agitator for convective heat transfer enhancement},

  author       = {Li, Zheng and Xu, Xianchen and Li, Kuojiang and Chen, Yangyang and Ke, Zhaoqing and Wang, Sheng and Chen, Hsiu-Hung and Huang, Guoliang and Chen, Chung-Lung and Chen, Chien-Hua},

  abstractNote = {Convective heat transfer plays an important role in both the fundamental research and the development of high-performance heat exchangers. Inspired by blades of grass vibrating in the wind, we developed a self-agitator for convective heat transfer enhancement. Because of fluid-structure interactions, the agitator, with self-sustained vibration, can generate strong vortices to significantly break the thermal boundary layer and improve fluid mixing for enhanced convective heat transfer. In particular, we establish a methodology to link the vorticity field at a preferred frequency to the optimal improvement in the convective heat transfer. To identify the self-agitator preferred frequency, mode analysis is performed with simulation results using dynamic mode decomposition. Experimental results are also obtained to further validate the proposed approach. These results show that the proposed self-agitator design can improve the convective heat transfer by 120% in a conventional heat exchanger without additional pumping power requirements and can achieve a Nusselt number of up to 30 within the laminar flow region, which is improved by 200% with the same Reynolds number compared to the clean channel.},

  doi          = {10.1063/1.5046502},

  journal      = {Applied Physics Letters},

  number       = 11,

  volume       = 113,

  place        = {United States},

  year         = {Thu Sep 13 00:00:00 EDT 2018},

  month        = {Thu Sep 13 00:00:00 EDT 2018}

}

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Title: Bio-inspired self-agitator for convective heat transfer enhancement

Abstract

Citation Formats

Upwash exploitation and downwash avoidance by flap phasing in ibis formation flight journal, January 2014

Hybrid Liquid Immersion and Synthetic Jet Heat Sink for Cooling 3-D Stacked Electronics journal, May 2012

Dual cantilever flutter: Experimentally validated lumped parameter modeling and numerical characterization journal, February 2016

Numerical investigation of heat transfer characteristics of the heated blocks in the channel with a transversely oscillating cylinder journal, January 2004

Dynamic mode decomposition of numerical and experimental data journal, July 2010

On the Heat Transfer Characteristics of Heat Sinks: With and Without Vortex Generators journal, June 2010

An investigation into curved and moving boundary treatments in the lattice Boltzmann method journal, May 2008

A comprehensive review on passive heat transfer enhancements in pipe exchangers journal, March 2013

Energy saving in flight formation journal, October 2001

Novel design of delta winglet pair vortex generator for heat transfer enhancement journal, November 2016

Convective heat transfer enhancement in a parallel plate channel by means of rotating or oscillating blade in the angular direction journal, March 2015

The dynamics of vortex streets in channels journal, July 2015

A scientific report on heat transfer analysis in mixed convection flow of Maxwell fluid over an oscillating vertical plate journal, March 2017

Model Reduction for Flow Analysis and Control journal, January 2017

Effects of winglets to augment tube wall heat transfer in louvered fin heat exchangers journal, October 2006

Numerical study on laminar convection heat transfer in a channel with longitudinal vortex generator. Part B: Parametric study of major influence factors journal, July 2008

Airfoil-shaped self-agitator for convective heat transfer enhancement journal, November 2018

Heat transfer enhancement in a straight channel via a rotationally oscillating adiabatic cylinder journal, August 2012

Numerical study on laminar convection heat transfer in a rectangular channel with longitudinal vortex generator. Part A: Verification of field synergy principle journal, March 2008

Computational study of flow-induced vibration of a reed in a channel and effect on convective heat transfer journal, December 2014

Numerical study of heat transfer enhancement of channel via vortex-induced vibration journal, September 2014

An overview of heat transfer enhancement methods and new perspectives: Focus on active methods using electroactive materials journal, June 2013

Triggering vortex shedding for flow past circular cylinder by acting on initial conditions: A numerical study journal, September 2014

Hydrodynamic schooling of flapping swimmers journal, October 2015

Heat transfer and mixing enhancement by free elastic flaps oscillation journal, June 2015

Spectral analysis of nonlinear flows journal, November 2009

Energy harvesting by means of flow-induced vibrations on aerospace vehicles journal, October 2016

Flutter-driven triboelectrification for harvesting wind energy journal, September 2014

Flexible filaments in a flowing soap film as a model for one-dimensional flags in a two-dimensional wind journal, December 2000

Modulated phononic crystals: Non-reciprocal wave propagation and Willis materials journal, January 2017

Heat transfer augmentation along the tube wall of a louvered fin heat exchanger using practical delta winglets journal, May 2008

Vortices, Generators and Heat Transfer journal, February 1998

Thermally assisted restart of gelled pipelines: A weakly compressible numerical study journal, March 2018

Heat transfer enhancement in a slot channel via a transversely oscillating adiabatic circular cylinder journal, January 2010

Experimental study of rectangular channel with modified rectangular longitudinal vortex generators journal, July 2010

Flags as vortex generators for heat transfer enhancement: Gaps and challenges journal, September 2017

A flapping vortex generator for heat transfer enhancement in a rectangular airside fin journal, March 2018

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Experimental investigation of heat transfer in a channel with new winglet-type vortex generators journal, November 2014

Upwash exploitation and downwash avoidance by flap phasing in ibis formation flight
journal, January 2014

Hybrid Liquid Immersion and Synthetic Jet Heat Sink for Cooling 3-D Stacked Electronics
journal, May 2012

Dual cantilever flutter: Experimentally validated lumped parameter modeling and numerical characterization
journal, February 2016

Numerical investigation of heat transfer characteristics of the heated blocks in the channel with a transversely oscillating cylinder
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Dynamic mode decomposition of numerical and experimental data
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On the Heat Transfer Characteristics of Heat Sinks: With and Without Vortex Generators
journal, June 2010

An investigation into curved and moving boundary treatments in the lattice Boltzmann method
journal, May 2008

A comprehensive review on passive heat transfer enhancements in pipe exchangers
journal, March 2013

Energy saving in flight formation
journal, October 2001

Novel design of delta winglet pair vortex generator for heat transfer enhancement
journal, November 2016

Convective heat transfer enhancement in a parallel plate channel by means of rotating or oscillating blade in the angular direction
journal, March 2015

The dynamics of vortex streets in channels
journal, July 2015

A scientific report on heat transfer analysis in mixed convection flow of Maxwell fluid over an oscillating vertical plate
journal, March 2017

Model Reduction for Flow Analysis and Control
journal, January 2017

Effects of winglets to augment tube wall heat transfer in louvered fin heat exchangers
journal, October 2006

Numerical study on laminar convection heat transfer in a channel with longitudinal vortex generator. Part B: Parametric study of major influence factors
journal, July 2008

Airfoil-shaped self-agitator for convective heat transfer enhancement
journal, November 2018

Heat transfer enhancement in a straight channel via a rotationally oscillating adiabatic cylinder
journal, August 2012

Numerical study on laminar convection heat transfer in a rectangular channel with longitudinal vortex generator. Part A: Verification of field synergy principle
journal, March 2008

Computational study of flow-induced vibration of a reed in a channel and effect on convective heat transfer
journal, December 2014

Numerical study of heat transfer enhancement of channel via vortex-induced vibration
journal, September 2014

An overview of heat transfer enhancement methods and new perspectives: Focus on active methods using electroactive materials
journal, June 2013

Triggering vortex shedding for flow past circular cylinder by acting on initial conditions: A numerical study
journal, September 2014

Hydrodynamic schooling of flapping swimmers
journal, October 2015

Heat transfer and mixing enhancement by free elastic flaps oscillation
journal, June 2015

Spectral analysis of nonlinear flows
journal, November 2009

Energy harvesting by means of flow-induced vibrations on aerospace vehicles
journal, October 2016

Flutter-driven triboelectrification for harvesting wind energy
journal, September 2014

Flexible filaments in a flowing soap film as a model for one-dimensional flags in a two-dimensional wind
journal, December 2000

Modulated phononic crystals: Non-reciprocal wave propagation and Willis materials
journal, January 2017

Heat transfer augmentation along the tube wall of a louvered fin heat exchanger using practical delta winglets
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journal, February 1998

Thermally assisted restart of gelled pipelines: A weakly compressible numerical study
journal, March 2018

Heat transfer enhancement in a slot channel via a transversely oscillating adiabatic circular cylinder
journal, January 2010

Experimental study of rectangular channel with modified rectangular longitudinal vortex generators
journal, July 2010

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journal, September 2017

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journal, March 2018

Heat transfer enhancement accompanying pressure-loss reduction with winglet-type vortex generators for fin-tube heat exchangers
journal, August 2002

Experimental investigation of heat transfer in a channel with new winglet-type vortex generators
journal, November 2014