@techreport{oai:jaxa.repo.nii.ac.jp:00045100, author = {小国, 保男 and 佐藤, 衛 and 神田, 宏 and 榊原, 盛三 and 三輪, 等 and 馬場, 滋夫 and OGUNI, Yasuo and SATO, Mamoru and KANDA, Hiroshi and SAKAKIBARA, Seizo and MIWA, Hitoshi and BABA, Shigeo}, month = {Dec}, note = {The flow turbulence level of the NAL two-dimensional transonic wind tunnel was measured with a constant temperature hot-wire anemometer using a hot film probe. The fluctuation of the mass flow is within a range of 0.3%-0.45% with Mach numbers of 0.2 to 0.8 and unit Reynolds numbers of 1.8×10(exp 5) to 5.5×10(exp 5) (1/cm). The fluctuation of the total temperature was one-seventh to one-tenth of the mass flow fluctuation. A plain sound wave was assumed, and the noise data was measured simultaneously with the turbulence and compared with this turbulence. An attempt was made to separate the velocity fluctuation and the density fluctuation in the mass flow. The future development of this complex method is discussed in this paper., 資料番号: NALTR0842000, レポート番号: NAL TR-842}, title = {航技研2次元風洞の気流特性について(Ⅲ)-気流の乱れと測定法-}, year = {1984} }