Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19最新文献_第3页

DRTS METHOD FOR LIGHT PROPAGATION: IMAGING WITH SCATTERED PHOTONS FROM THE CONTINUOUS TO ULTRAFAST PULSE REGIMES 光传播的DRTS方法:从连续到超快脉冲的散射光子成像

Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19 Pub Date : 1900-01-01 DOI: 10.1615/rad-19.350

A. Georgakopoulos, K. Politopoulos, E. Georgiou

引用次数: 0

RECONSTRUCTION OF THREE-DIMENSIONAL TEMPERATURE AND CONCENTRATION FIELDS OF A LAMINAR FLAME BY MACHINE LEARNING 层流火焰三维温度场和浓度场的机器学习重建

Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19 Pub Date : 1900-01-01 DOI: 10.1615/RAD-19.230

T. Ren, M. Modest

{"title":"RECONSTRUCTION OF THREE-DIMENSIONAL TEMPERATURE AND CONCENTRATION FIELDS OF A LAMINAR FLAME BY MACHINE LEARNING","authors":"T. Ren, M. Modest","doi":"10.1615/RAD-19.230","DOIUrl":"https://doi.org/10.1615/RAD-19.230","url":null,"abstract":"Combustion diagnostics have reached high levels of refinement, but it remains difficult to simultaneously reconstruct the three-dimensional (3-D) temperature and species concentration fields. Tomographic reconstructions for high dimensional diagnostics are typically conducted with prevailing iterative methods. Due to the high data throughput, they are usually inefficient and computationally formidable. In this study, we present an inverse radiation model based on the machine learning approach to reconstruct 3-D temperature and mixture species concentrations fields from infrared emission spectral measurements for a laminar flame. Flame emission was detected with an imaging Fourier-transform spectrometer, obtaining a 2-D array of hyperspectral data. A machine learning model was trained with synthetic spectral emission for gas mixtures of CO2, H2O, and CO. The developed method demonstrates its excellent capability of solving nonlinear inverse problems, providing an efficient and global inverse radiation model, and is able to retrieve 3-D temperature and mixture species concentrations simultaneously.","PeriodicalId":413005,"journal":{"name":"Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114808489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

ALTERNATIVE MODELS FOR OPTICAL PROPERTIES OF A HIGHLY-POROUS MEDIUM COMPOSED OF WOOD CHIPS 由木屑组成的高多孔介质的光学特性的替代模型

Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19 Pub Date : 1900-01-01 DOI: 10.1615/rad-19.120

L. Dombrovsky, Pierre Lea, D. Caron, J. Henry, H. Pron, J. Randrianalisoa

引用次数: 0

NONCONTACT RADIATIVE THERMAL MODULATION BETWEEN NANOPARTICLES 纳米颗粒之间的非接触辐射热调制

Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19 Pub Date : 1900-01-01 DOI: 10.1615/rad-19.450

Jinlin Song, Lu Lu, Xinping Zhou, Q. Cheng

引用次数: 0

GENERATION OF NEW WSGG CORRELATIONS AND ANALYSIS ON THE IMPORTANCE OF CONSIDERING TRANSPARENT WINDOWS FOR SOOT 生成新的WSGG相关性，并分析考虑透明窗对烟尘的重要性

Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19 Pub Date : 1900-01-01 DOI: 10.1615/RAD-19.540

F. R. Coelho, G. Fraga, F. França

{"title":"GENERATION OF NEW WSGG CORRELATIONS AND ANALYSIS ON THE IMPORTANCE OF CONSIDERING TRANSPARENT WINDOWS FOR SOOT","authors":"F. R. Coelho, G. Fraga, F. França","doi":"10.1615/RAD-19.540","DOIUrl":"https://doi.org/10.1615/RAD-19.540","url":null,"abstract":"This work generates new weighted-sum-of-gray-gases (WSGG) correlations for soot based on the Rayleigh theory and the refractive index data from several authors, for wide ranges of temperature, path length, and soot volume fraction. New correlations are also developed for a more simplified methodology which considers that the spectral dependence of the soot absorption coefficient is linear. All these WSGG coefficients are compared to the high resolution solution for three test cases, both considering and neglecting the transparent window of soot. Results show that the correlations provide accurate prediction of total emittance, radiative heat flux, and radiative heat source for all the conditions considered in the present study. However, the inclusion of the transparent window contribution did not increase the accuracy of the method considerably. Since the computational cost of the WSGG method is increased when the transparent window is considered, this study concludes that neglecting it is the best option, at least for the presented correlations. Furthermore, it is also concluded that the WSGG is a good alternative to the spectral modeling of soot.","PeriodicalId":413005,"journal":{"name":"Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130180800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

KIRCHHOFF'S LAW FOR ANISOTROPIC MEDIA INCLUDING THIN FILMS 各向异性介质包括薄膜的基尔霍夫定律

Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19 Pub Date : 1900-01-01 DOI: 10.1615/RAD-19.170

Zhuomin M. Zhang, Xiaohu Wu, C. Fu

{"title":"KIRCHHOFF'S LAW FOR ANISOTROPIC MEDIA INCLUDING THIN FILMS","authors":"Zhuomin M. Zhang, Xiaohu Wu, C. Fu","doi":"10.1615/RAD-19.170","DOIUrl":"https://doi.org/10.1615/RAD-19.170","url":null,"abstract":"Kirchhoff’s law relates the thermal emission and absorption of materials and hence is very important for thermal engineering applications with significant radiation heat transfer. Due to the advancement of metamaterials, two-dimensional materials, and micro/nanoscale thermal radiation, Kirchhoff’s law has been revisited by several groups. Some studies also challenge the derivations and applicability of the statement of Kirchhoff’s law that appears in typical radiative heat transfer textbooks. The present study begins with a review of Kirchhoff’s law for isotropic objects and its validity for both hemispherical emittance and directional emittance. For anisotropic materials, including opaque media and thin films, Kirchhoff’s law is then formulated considering both co-polarization and cross-polarization. It is shown that for macroscopic objects, as long as the Helmholtz reciprocity can be established, conventional expressions of Kirchhoff’s law can be applied for engineering thermal analysis and design even with anisotropic media and metamaterials. Numerical examples based on a composite of two anisotropic films are also presented.","PeriodicalId":413005,"journal":{"name":"Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19","volume":" 42","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113947748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ANALYZATION OF THE FIRST AND SECOND ORDERS OF RESONANT MODES AROUND METAL-SEMICONDUCTOR-METAL TRILAYER 金属-半导体-金属三层一、二阶共振模式分析

Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19 Pub Date : 1900-01-01 DOI: 10.1615/RAD-19.410

Kazuma Isobe, K. Hanamura

{"title":"ANALYZATION OF THE FIRST AND SECOND ORDERS OF RESONANT MODES AROUND METAL-SEMICONDUCTOR-METAL TRILAYER","authors":"Kazuma Isobe, K. Hanamura","doi":"10.1615/RAD-19.410","DOIUrl":"https://doi.org/10.1615/RAD-19.410","url":null,"abstract":"Electromagnetic fields around metal–semiconductor–metal (MSM) multilayers with a squared island top layer were calculated numerically, and their spectral absorptances were evaluated. The top and bottom metal layers were set to be gold; however, the intermediate semiconductor layer was set to be gallium antimony (GaSb). With a squared island top gold layer, the first peak shifted to a longer wavelength range. Uncharted second peaks emerged from 1.0 to 2.0 μm when the island width was longer than 300 nm. By observing the distributions of the zdirectional electric fields at the wavelength of the absorptance peak, it was clarified that the second peak of absorptance was generated by horizontal directional Fabry–Perot interference inside GaSb layer depending on the width of the island. Moreover, the first peak could be described using the LC equivalent circuit model in the condition with wide distance between two islands. However, it was indicated that the LC circuit model needed a correction about capacitance between the upper and ground layer in the condition with narrow distance between two islands.","PeriodicalId":413005,"journal":{"name":"Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134280337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CRITICAL MICRO-TEXTURAL DETAILS INFLUENCING RADIATIVE TRANSPORT IN HETEROGENEOUS MATERIALS 影响非均质材料辐射输运的关键微观结构细节

Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19 Pub Date : 1900-01-01 DOI: 10.1615/RAD-19.150

T. Mathew, Y. Favennec, B. Rousseau

引用次数: 1

A RADIATION TRANSFER BASED MODEL FOR ANALYZING THE EFFECTS OF IRRADIATION ON HUMAN SKIN IN LASER TREATMENTS 激光治疗中辐照对人体皮肤影响的辐射转移分析模型

Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19 Pub Date : 1900-01-01 DOI: 10.1615/RAD-19.220

Takahiro Kono, N. Ogawa, R. U. Maheswari, Hiroki Gonome, J. Yamada

引用次数: 0

DEVELOPMENT OF A NEW MODEL TO ACCOUNT FOR TURBULENCE-RADIATION INTERACTION IN THE RADIATIVE EMISSION 建立一个新的模型来解释辐射发射中的湍流-辐射相互作用

Proceeding of Proceedings of the 9th International Symposium on Radiative Transfer, RAD-19 Pub Date : 1900-01-01 DOI: 10.1615/rad-19.280

G. Fraga, P. Coelho, A. P. Petry, F. França

引用次数: 1