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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 薛熙于 | zh_TW |
| dc.contributor.advisor | Hsi-Yu Schive | en |
| dc.contributor.author | 陳俊延 | zh_TW |
| dc.contributor.author | Chun-Yen Chen | en |
| dc.date.accessioned | 2023-09-22T17:30:34Z | - |
| dc.date.available | 2023-11-09 | - |
| dc.date.copyright | 2023-09-22 | - |
| dc.date.issued | 2023 | - |
| dc.date.submitted | 2023-08-11 | - |
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Communications in Computational Physics, 14(2):328–354, 2013. | - |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/90123 | - |
| dc.description.abstract | 我們擴展了GAMER-2的功能，以支持宇宙射線之物理，其中包括單一能量通道、平流、非等向性擴散以及與熱氣體的動態耦合。我們將寫好的程式用下面的測試問題：聲波、震波管以及數個非等向性擴散測試來檢驗程式的準確性。這些測試的結果都有二階精確。除此之外，我們也讓宇宙射線的計算支援GAMER-2的進階功能，其中包括自適應網格、混合的OpenMP/MPI平行以及圖形顯示卡(GPU)的平行加速。在未來，我們預計再未來增加更多宇宙射線的物理像是多能量通道、宇宙射線流以及宇宙射線熱效應。 | zh_TW |
| dc.description.abstract | We extend GAMER-2 to support cosmic rays with a single energy channel, advection, anisotropic diffusion, and dynamical coupling to thermal gas. To verify the accuracy, we conduct a series of numerical experiments, including acoustic wave, shock-tube problem, and several anisotropic diffusion tests. All tests achieve second-order accuracy. Furthermore, our extension inherits the advanced features of GAMER-2, including adaptive mesh refinement, hybrid OpenMP/MPI parallelization, and graphics processing unit (GPU) acceleration. We are planning to implement multiple energy channels, cosmic rays streaming, and heating. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-09-22T17:30:34Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2023-09-22T17:30:34Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | Verification Letter from the Oral Examination Committee i
Acknowledgements iii 摘要 v Abstract vii Contents ix List of Figures xi List of Tables xv Chapter 1 Introduction 1 Chapter 2 Governing equations 3 2.1 MHD with CRs 3 2.2 Numerical method 5 2.2.1 MHM-RP with CRs 5 2.2.2 AMR of CRs 9 Chapter 3 Results 11 3.1 Sound Wave 12 3.1.1 With and without background velocity 13 3.1.2 Half Step Update 16 3.2 Shock Tube (without diffusion) 17 3.3 Diffusion 17 3.3.1 Isotropic diffusion 19 3.3.2 Anisotropic diffusion - Gaussian 19 3.3.3 Anisotropic diffusion - Ring 22 3.3.4 Anisotropic diffusion - Blast Wave 23 3.4 AMR 25 3.4.1 Blast wave 25 3.4.2 Shocktube 25 3.5 Performance 26 Chapter 4 Conclusions 29 References 31 Appendix A — GAMER Limiter 37 Appendix B — Analytical Solution of CR Diffusion Equation 43 B.1 1-D solution 43 B.2 3-D solution 44 | - |
| dc.language.iso | en | - |
| dc.subject | 宇宙射線 | zh_TW |
| dc.subject | FLASH | zh_TW |
| dc.subject | GAMER2 | zh_TW |
| dc.subject | GPU加速 | zh_TW |
| dc.subject | FLASH | en |
| dc.subject | GAMER2 | en |
| dc.subject | GPU boost | en |
| dc.subject | Cosmic Rays | en |
| dc.title | 在GAMER中實現宇宙射線 | zh_TW |
| dc.title | The Implementation of Cosmic Rays in GAMER | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 111-2 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.oralexamcommittee | 楊湘怡;潘國全 | zh_TW |
| dc.contributor.oralexamcommittee | Hsiang-Yi Karen Yang;Kuo-Chuan Pan | en |
| dc.subject.keyword | GAMER2,宇宙射線,FLASH,GPU加速, | zh_TW |
| dc.subject.keyword | GAMER2,Cosmic Rays,FLASH,GPU boost, | en |
| dc.relation.page | 45 | - |
| dc.identifier.doi | 10.6342/NTU202303891 | - |
| dc.rights.note | 同意授權(全球公開) | - |
| dc.date.accepted | 2023-08-12 | - |
| dc.contributor.author-college | 理學院 | - |
| dc.contributor.author-dept | 物理學系 | - |
| 顯示於系所單位： | 物理學系 | |
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