…In this case, not only the flow pattern but also the pressure distribution will match perfectly if they are written in a dimensionless form. In other words, the pressure coefficient p divided by 1/2ρ U 2 (ρ is the fluid density, U is the flow velocity) is a function of only Re and the position coordinate X / L , which is non-dimensionalized by the characteristic length L. The validity of this law is very useful in model experiments, organizing experiments, standardizing numerical calculations, etc. … *Some of the terminology explanations that mention "pressure coefficient" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このとき,流れのパターンばかりでなく,圧力分布なども次元のない形(無次元形)で書けば完全に一致する。すなわち,圧力pを1/2ρU2(ρは流体の密度,Uは流速)で割った圧力係数,は,Reと,代表長さLで無次元化した位置座標X/Lだけの関数である。この法則が成立することは,模型実験,実験の整理,数値計算の標準化などの面で有用性は大きい。… ※「圧力係数」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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