【Three-Dimensional Visualization of Shock Cell Structure and Screech Tone Emission in Underexpanded Circular Jet】
#论文# #圆形射流# #喷气式飞机# #三维可视化#
The generation of screech tone in the jet has a crucial impact on the environmental issue. In this paper, a three-dimensional acoustic field of a screeching circular jet was first investigated experimentally based on high-speed cross-schlieren imaging and microphone measurements around the screeching jet. Furthermore, the circumferential observations of the screech tone emission and frequency spectrum were evaluated experimentally.
DOI: 10.4236/jfcmv.2022.101001 https://t.cn/A6x8mo6A
#论文# #圆形射流# #喷气式飞机# #三维可视化#
The generation of screech tone in the jet has a crucial impact on the environmental issue. In this paper, a three-dimensional acoustic field of a screeching circular jet was first investigated experimentally based on high-speed cross-schlieren imaging and microphone measurements around the screeching jet. Furthermore, the circumferential observations of the screech tone emission and frequency spectrum were evaluated experimentally.
DOI: 10.4236/jfcmv.2022.101001 https://t.cn/A6x8mo6A
Menades壁画，西塞罗别墅，庞贝遗址 #AncientArt# #Archaeology# #archaeohistories# #Roman#
Menades, wall painting,
Style III, c. 20–45 AD.
Medium: Fresco, 26.7 × 71.3cm.
Found at Pompeii (Italy), Villa di Cicerone – Villa of Cicero. Now on display at the Naples, National Archaeological Museum. https://t.cn/A6xpOSZw
Menades, wall painting,
Style III, c. 20–45 AD.
Medium: Fresco, 26.7 × 71.3cm.
Found at Pompeii (Italy), Villa di Cicerone – Villa of Cicero. Now on display at the Naples, National Archaeological Museum. https://t.cn/A6xpOSZw
#安倍叫嚣台湾有事等同于日本有事#近日，日本前首相安倍晋三在某次线上演讲时对台湾问题指手画脚，口出狂言声称“台湾有事即日本有事，也就是日美同盟有事”。对此，外交部发言人汪文斌在21日的例行记者会上回应：任何人胆敢挑战中国人民底线必将碰得头破血流。China on Wednesday expressed strong dissatisfaction and firm opposition to former Japanese Prime Minister Shinzo Abe's recent remarks on Taiwan.戳：https://t.cn/A6xCVfKE
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