Characteristics of wave propagation in thermoelastic medium
文献类型：期刊论文
| 作者 | Hou WanTing1; Fu LiYun1; Wei Jia2,3; Wang ZhiWei1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2021-04-01 |
| 卷号 | 64期号:4页码:1364-1374 |
| 关键词 | Thermoelastic medium Propagation of elastic wave Dispersion analysis Green's function Numerical simulation Influence of thermal medium parameters |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2021N0458 |
| 英文摘要 | Seismic exploration of deep-super deep oil and gas involves seismic wave propagation in high-temperature media. The thermoelastic parameters in this medium have an important influence on the propagation of seismic waves. The Lord-Shulman hyperbolic coupled thermoelastic equation with a relaxation time correction term predicted theoretically the propagation of a fast longitudinal wave, a slow longitudinal wave (a quasi-static slow longitudinal wave, called thermal wave for short) and a transverse wave in the thermoelastic medium. The first two longitudinal waves are thermal dissipation attenuation waves and the transverse wave is not effected by the thermal characteristics of the medium. This paper combining plane wave dispersion analysis and Green's function numerical simulation studies the dispersion and attenuation characteristics of two thermal dissipation attenuating waves in detail, focusing on analyzing the effects of changes in thermal conductivity, thermal expansion coefficient and specific heat on wave velocity and attenuation. Studies have shown that thermal conductivity as the main parameter determines the critical changes in wave velocity and attenuation. The thermal expansion coefficient has a significant effect on the amplitude of wave velocity and attenuation. The specific heat takes into account the characteristics of the first two thermoelastic coefficients. Finally, the second-order Green's function in the frequency domain of thermoelastic dynamics is used to simulate the wave field snapshots to show the propagation behavior of longitudinal, transverse and thermal waves in the thermoelastic medium. |
| WOS关键词 | ELASTIC WAVES ; 2ND SOUND ; ATTENUATION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000647154800019 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/101221]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 通讯作者 | Fu LiYun |
| 作者单位 | 1.China Univ Petr East China, Key Lab Deep Oil & Gas, Qingdao 266580, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hou WanTing,Fu LiYun,Wei Jia,et al. Characteristics of wave propagation in thermoelastic medium[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2021,64(4):1364-1374. |
| APA | Hou WanTing,Fu LiYun,Wei Jia,&Wang ZhiWei.(2021).Characteristics of wave propagation in thermoelastic medium.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,64(4),1364-1374. |
| MLA | Hou WanTing,et al."Characteristics of wave propagation in thermoelastic medium".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 64.4(2021):1364-1374. |
入库方式： OAI收割
来源：地质与地球物理研究所
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