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Application of Wavelet Transform to Acoustic Radiation and Scattering

Wen Lihua,Ren Xingmin

Strategic Study of CAE 2002, Volume 4, Issue 8,   Pages 63-68

Abstract:

Traditional boundary element methods with a full matrix equation for acoustic problems, have beenIn this paper, the new wavelet approaches have been presented for solving acoustic radiation and scattering, and structural-acoustic coupling.a basis of the orthogonal wavelets on the interval, and a wavelet spectral formulation for solving acousticThe new technique was employed to investigate the underwater acoustic radiation from a complicate structure

Keywords： wavelet analysis     acoustic radiation and scattering     structural-acoustic coupling     frequency iteration    

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Radiative properties of materials with surface scattering or volume scattering: A review

Qunzhi ZHU, Hyunjin LEE, Zhuomin M. HANG

Frontiers in Energy 2009, Volume 3, Issue 1,   Pages 60-79 doi: 10.1007/s11708-009-0011-3

Abstract: In this paper, recent research on scattering of thermal radiation by rough surfaces, fibrous insulationRigorous solutions and approximation methods for surface scattering and volume scattering are described

Keywords： aerogel     fiber     particle scattering     radiative properties     soot     surface roughness    

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Numerical Simulation of the Interaction Between Smoke and Water Mist in Fire

Ye Dong,Jiang Yong

Strategic Study of CAE 2007, Volume 9, Issue 2,   Pages 84-89

Abstract: Scattering of thermal radiation from fire by water mist and the effects of breakup and coalescence ofModeling results demonstrate that radiation is the main heat transfer process;bigger droplets are easierWater mist attenuates thermal radiation by absorbing and scattering, and it may enhance combustion reaction

Keywords： water mist     Fluent     thermal radiation     scattering     coalescence     breakup    

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On Scattering and Radiation Problem for a Cylinder over a Cylindrical Barrier in Water of Finite Depth

Wu Bijun,Zheng Yonghong,You Yage,Sun Xiaoyan,Chen Yong

Strategic Study of CAE 2004, Volume 6, Issue 2,   Pages 48-55

Abstract: eigenfunction expansion method, the expressions for the properties of kinematics and kinetics, which are due to scatteringand radiation for a floating vertical circular cylinder over a coaxial cylindrical barrier in waterThis paper presents the analytical solution for the radiation potentials due to heave, surge, and pitch

Keywords： analytical method     velocity potential     wave force    

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Augmentation of natural convective heat transfer by acoustic cavitation

Jun CAI, Xiulan HUAI, Shiqiang LIANG, Xunfeng LI,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 313-318 doi: 10.1007/s11708-009-0064-3

Abstract: An experimental study was conducted to investigate the effects of acoustic cavitation on natural convectiveThe experimental results indicated that heat transfer could be enhanced by acoustic cavitation and had

Keywords： heat transfer enhancement     augmentation     acoustic cavitation     acoustic streaming     convective heat transfer    

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Acoustic fault signal extraction via the line-defect phononic crystals

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 10-10 doi: 10.1007/s11465-021-0666-y

Abstract: The defect band, namely, the formed resonance band of line-defect PCs enables the incident acoustic wave

Keywords： phononic crystals     line-defect     fault signal extraction     acoustic enhancement    

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Experimental study on wire breakage detection by acoustic emission

Limin SUN, Ji QIAN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 503-509 doi: 10.1007/s11709-011-0132-8

Abstract: This paper experimentally investigated wire breakage detection in a steel cable by acoustic emission

Keywords： acoustic emission (AE)     waveform     wire breakage     attenuation factor     wave velocity    

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Simulation and experimental improvement on a small-scale Stirling thermo-acoustic engine

Mao CHEN,Yonglin JU

Frontiers in Energy 2016, Volume 10, Issue 1,   Pages 37-45 doi: 10.1007/s11708-015-0390-6

Abstract: Compared with the traditional engines, the thermo-acoustic engines are relatively new and can act asIn this paper, the influence of the dimensions of the main parts of the small-scale Stirling thermo-acousticBased on the numerical simulation, a small-scale Stirling thermo-acoustic engine were constructed and

Keywords： thermo-acoustic Stirling engine     small-scale     simulation     experiment    

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Effect of light scattering on the performance of a direct absorption solar collector

Kwang Hyun WON, Bong Jae LEE

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 169-177 doi: 10.1007/s11708-018-0527-5

Abstract: Recently, a solar thermal collector often employs nanoparticle suspension to absorb the solar radiationMost of the existing studies have neglected particle scattering by assuming that the size of nanoparticlesuspension is much smaller than the wavelength of solar radiation (i.e., Rayleigh scattering is applicableThe present study investigates the scattering effect on the thermal performance of the DASC employingIt is found that the light scattering can improve the collector performance if the scattering coefficient

Keywords： direct absorption solar collector     plasmonic nanofluid     light scattering    

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Acoustic characteristics of bi-directional turbines for thermoacoustic generators

Dongdong LIU, Yanyan CHEN, Wei DAI, Ercang LUO

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 1027-1036 doi: 10.1007/s11708-020-0702-3

Abstract: A general expression for the acoustic characteristics of the bi-directional turbine was proposed basedThe turbine in the oscillating flow was treated in a lumped-parameter model to extract the acoustic impedanceThe key acoustic impedance characteristic of the turbine was the resistance and inertance due to complex

Keywords： thermoacoustic power generator     acoustic characteristics     bi-directional impulse turbine     energy conversion    

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Particle therapy for cancers: a new weapon in radiation therapy

Guo-Liang Jiang

Frontiers of Medicine 2012, Volume 6, Issue 2,   Pages 165-172 doi: 10.1007/s11684-012-0196-4

Abstract: Particle irradiation started to draw attention in the past decade and has now become a hotspot in the radiationdevelopments in particle irradiation, focusing on the characteristics of proton and carbon ions in radiationCompared with the most advanced radiation techniques using photon, such as three-dimensional conformalradiation therapy and intensity-modulated radiation therapy, proton therapy has yielded more promising

Keywords： radiation therapy     particle therapy     proton     carbon     cancer    

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Research on acoustic-structure sensitivity using FEM and BEM

ZHANG Jun, ZHAO Wenzhong, ZHANG Weiying

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 62-67 doi: 10.1007/s11465-007-0010-1

Abstract: Acoustic-structure sensitivity is used to predict the change of acoustic pressure when a structure designUsing FEM (finite element method) and BEM (boundary element method) acoustic-structure sensitivity wasacoustic BEM.Then, acoustic-structure sensitivity was computed by linking velocity sensitivity in FEM and acousticAcoustic pressure sensitivity with respect to structure thickness achieved in frequency ranges 1 100

Keywords： sensitivity method     BEM     acoustic pressure     pressure sensitivity     frequency    

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Analysis of radiation heat transfer and temperature distributions of solar thermochemical reactor for

Bachirou GUENE LOUGOU, Yong SHUAI, Xiang CHEN, Yuan YUAN, Heping TAN, Huang XING

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 480-492 doi: 10.1007/s11708-017-0506-2

Abstract: This paper investigated radiation heat transfer and temperature distributions of solar thermochemicalDifferent parameters including absorptivity, emissivity, reflection based radiation scattering, and carrierThe fvDOM approximation was used to obtain the radiation intensity distribution along the reactor.The drop in the temperature resulted from the radiation scattering was further investigated using theto the thermal non-equilibrium was observed in the radiation inlet region.

Keywords： solar thermochemical reactor     incident radiation flux     temperature distribution     radiation absorptivity     radiation emissivity     thermal performance analysis    

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Acoustic emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete

Frontiers of Structural and Civil Engineering   Pages 1341-1356 doi: 10.1007/s11709-023-0988-4

Abstract: The dynamic splitting tensile damage characteristics were evaluated using acoustic emission (AE) parameter

Keywords： steel fiber reinforced concrete     freeze–thaw cycling     Brazilian disc splitting test     acoustic emissiontechnique     dynamic splitting tensile acoustic emission properties    

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evolution behavior of polypropylene fiber reinforced concrete subjected to sulfate attack based on acoustic

Ninghui LIANG; Jinwang MAO; Ru YAN; Xinrong LIU; Xiaohan ZHOU

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 316-328 doi: 10.1007/s11709-022-0810-8

Abstract: reinforced concrete (PFRC) subjected to sulfate attack, a uniaxial compression test was carried out based on acoustic

Keywords： polypropylene fiber reinforced concrete     sulfate attack     damage evolution behavior     acoustic emission    

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Title Author Date Type Operation

Application of Wavelet Transform to Acoustic Radiation and Scattering

Wen Lihua,Ren Xingmin

Journal Article

Radiative properties of materials with surface scattering or volume scattering: A review

Qunzhi ZHU, Hyunjin LEE, Zhuomin M. HANG

Journal Article

Numerical Simulation of the Interaction Between Smoke and Water Mist in Fire

Ye Dong,Jiang Yong

Journal Article

On Scattering and Radiation Problem for a Cylinder over a Cylindrical Barrier in Water of Finite Depth

Wu Bijun,Zheng Yonghong,You Yage,Sun Xiaoyan,Chen Yong

Journal Article

Augmentation of natural convective heat transfer by acoustic cavitation

Jun CAI, Xiulan HUAI, Shiqiang LIANG, Xunfeng LI,

Journal Article

Acoustic fault signal extraction via the line-defect phononic crystals

Journal Article

Experimental study on wire breakage detection by acoustic emission

Limin SUN, Ji QIAN

Journal Article

Simulation and experimental improvement on a small-scale Stirling thermo-acoustic engine

Mao CHEN,Yonglin JU

Journal Article

Effect of light scattering on the performance of a direct absorption solar collector

Kwang Hyun WON, Bong Jae LEE

Journal Article

Acoustic characteristics of bi-directional turbines for thermoacoustic generators

Dongdong LIU, Yanyan CHEN, Wei DAI, Ercang LUO

Journal Article

Particle therapy for cancers: a new weapon in radiation therapy

Guo-Liang Jiang

Journal Article

Research on acoustic-structure sensitivity using FEM and BEM

ZHANG Jun, ZHAO Wenzhong, ZHANG Weiying

Journal Article

Analysis of radiation heat transfer and temperature distributions of solar thermochemical reactor for

Bachirou GUENE LOUGOU, Yong SHUAI, Xiang CHEN, Yuan YUAN, Heping TAN, Huang XING

Journal Article

Acoustic emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete

Journal Article

evolution behavior of polypropylene fiber reinforced concrete subjected to sulfate attack based on acoustic

Ninghui LIANG; Jinwang MAO; Ru YAN; Xinrong LIU; Xiaohan ZHOU

Journal Article