标题：Wall Static Pressure Variation in Sudden Expansion in Cylindrical Ducts with Cavities for Supersonic Flow for Mach 1.58 and 2.06: A Fuzzy Logic Approach
期刊名称：International Journal of Soft Computing & Engineering
电子版ISSN：2231-2307
出版年度：2012
卷号：2
期号：1
页码：372-378
出版社：International Journal of Soft Computing & Engineering
摘要：In this paper the analysis of wall static pressure variation has been done with fuzzy logic approach to have smooth flow in the duct. Here there are three area ratio chosen for the enlarged duct, 2.89, 6.00 and 10.00. The primary pressure ratio is taken as 2.65 and cavity aspect ratio is taken as 1 and 2. The study is analyzed for length to diameter ratio of 1,2,4 and 6. The nozzles used are De Laval type and with a Mach number of 1.74 and 2.23 and conical nozzles having Mach numbers of 1.58 and 2.06. The analysis based on fuzzy logic theory indicates that the length to diameter ratio of 1 is sufficient for smooth flow development if only the basis of wall static pressure variations is considered.
关键词：air ratio; De Laval nozzle; Mach number; pressure ratio; wall static pressure.
