@techreport{oai:jaxa.repo.nii.ac.jp:00044837, author = {新野, 正之 and 鈴木, 昭夫 and 熊川, 彰長 and 坂本, 博 and 佐々木, 正樹 and NIINO, Masayuki and SUZUKI, Akio and KUMAKAWA, Akinaga and SAKAMOTO, Hiroshi and SASAKI, Masaki}, month = {Aug}, note = {The cooling problem in the thrust chamber is one of the most critical problems in the development of the rocket engine. Thus the engine system design is often greatly influenced by the decision of what kind of cooling system to adopt. The nondimentional design equations, which were previously proposed by many investigators, however, are very different from each other. Consequently we can not decide what is the best adequate equation for the design. Such being the case, the authors have begun investigation of the heat transfer characteristics of liquid hydrogen in relation to the design of engines being developed in Japan. The authors consider the main causes of the disagreement between many correlation equations to be as follws. (1)Many investigators did not distinguish among the differences of heat transfer phenomena found near the pseudo critical temperature T*cr. (2)The investigators did not pay enough attentions to the surface roughness of the test tubes and the complicated behavior of the entrance effects. Thus the present report intends to compare the author’s experimental data with these previously correlated equations from these two points of view., 資料番号: NALTR0583000, レポート番号: NAL TR-583}, title = {超臨界圧における液体水素の熱伝達特性(1)(直管における実験と既存整理式との比較)}, year = {1979} }