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非ニュートン流体に関するオリフィスの流量係数について ON THE DISCHARGE COEFFICIENT OF ORIFICES FOR PSEUDO-PLASTIC FLUIDS 伊地知, 和也 IJICHI, Kazuya 京, 信一郎 KYO, Shinichiro 田中, 安彦 TANAKA, Yasuhiko 501 The discharge coefficients of three orifices, that is, straight, quadrant-edged and sharp edged orifice, in a commercial 1-in. gas pipe for pseudo-plastic　fluid (carboxymethyl cellulose aqueous solution) were measured. The concentrations were 0.20, 0.35　and 0.49 in wt%, and the throat area ratios of these orifices were roughly 0.39. The results obtained were shown as follows : 1) For the laminar flow region, the log-log correlation of pipe friction factor and pseudo-plastic Reynolds number Re_psu coincided with that of Newtonian fluids. 2) Within the range investigated, the allowable limit of Reynolds number for each orifice did not depend on the concentrations. In the region above the allowable limit of Reynolds number, the relation between the discharge coefficient for each orifice and Re_psu was independent of the concetrations. departmental bulletin paper 鹿児島大学 Kagoshima University 1975-09 VoR application/pdf 鹿児島大学工学部研究報告 17 75 80 The research reports of the Faculty of Engineering, Kagoshima University 0451212X AN00040363 https://ir.kagoshima-u.ac.jp/record/10736/files/AN00040363_v17_p75-80.pdf http://hdl.handle.net/10232/12772 https://ir.kagoshima-u.ac.jp/records/10736 jpn open access