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Advanced validation of CFD-FDTD combined method using highly applicable solver for reentry blackout prediction
| Title: | Advanced validation of CFD-FDTD combined method using highly applicable solver for reentry blackout prediction |
| Authors: | Takahashi, Yusuke Browse this author →KAKEN DB |
| Keywords: | plasma flow simulation | | electromagnetic wave simulation | | radio frequency blackout | | atmospheric reentry |
| Issue Date: | 18-Nov-2015 |
| Publisher: | IOP Publishing |
| Journal Title: | Journal of Physics D: Applied Physics |
| Volume: | 49 |
| Issue: | 1 |
| Start Page: | 015201 |
| Publisher DOI: | 10.1088/0022-3727/49/1/015201 |
| Abstract: | An analysis model of plasma flow and electromagnetic waves around a reentry vehicle for radio frequency blackout prediction during aerodynamic heating was developed in this study. The model was validated based on experimental results from the radio attenuation measurement program. The plasma flow properties, such as electron number density, in the shock layer and wake region were obtained using a newly developed unstructured grid solver that incorporated real gas effect models and could treat thermochemically non-equilibrium flow. To predict the electromagnetic waves in plasma, a frequency-dependent finite-difference time-domain method was used. Moreover, the complicated behaviour of electromagnetic waves in the plasma layer during atmospheric reentry was clarified at several altitudes. The prediction performance of the combined model was evaluated with profiles and peak values of the electron number density in the plasma layer. In addition, to validate the models, the signal losses measured during communication with the reentry vehicle were directly compared with the predicted results. Based on the study, it was suggested that the present analysis model accurately predicts the radio frequency blackout and plasma attenuation of electromagnetic waves in plasma in communication. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/63601 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 高橋 裕介
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