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Nikpour, M. R., Khosravinia, P., Farsadizadeh, D.. (1397). Experimental analysis of shock waves turbulence in contractions with rectangular sections. فناوری آموزش, 8(2), 187-196. doi: 10.22061/jcarme.2018.2033.1179
M. R. Nikpour; P. Khosravinia; D. Farsadizadeh. "Experimental analysis of shock waves turbulence in contractions with rectangular sections". فناوری آموزش, 8, 2, 1397, 187-196. doi: 10.22061/jcarme.2018.2033.1179
Nikpour, M. R., Khosravinia, P., Farsadizadeh, D.. (1397). 'Experimental analysis of shock waves turbulence in contractions with rectangular sections', فناوری آموزش, 8(2), pp. 187-196. doi: 10.22061/jcarme.2018.2033.1179
Nikpour, M. R., Khosravinia, P., Farsadizadeh, D.. Experimental analysis of shock waves turbulence in contractions with rectangular sections. فناوری آموزش, 1397; 8(2): 187-196. doi: 10.22061/jcarme.2018.2033.1179

Experimental analysis of shock waves turbulence in contractions with rectangular sections

Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 7، دوره 8، شماره 2 - شماره پیاپی 16، فروردین 2019، صفحه 187-196    اصل مقاله (890.76 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2018.2033.1179
نویسندگان
M. R. Nikpour1؛ P. Khosravinia* 2؛ D. Farsadizadeh3
1Department of Water Engineering, University of Mohaghegh Ardabili, Ardabil, Iran
2Department of Water Sciences and Engineering, University of Kurdistan, Sanandaj, Kurdistan, Iran
3Department of Water Engineering, University of Tabriz, Tabriz, East Azerbaijan, Iran
تاریخ دریافت: 21 آبان 1395،  تاریخ بازنگری: 24 مرداد 1397،  تاریخ پذیرش: 27 مرداد 1397 
چکیده
Formation of shock waves has an important role in supercritical flows studies. These waves are often occurring during passage of supercritical flow in the non-prismatic channels. In the present study, the effect of length of contraction wall of open-channel for two different geometries (1.5 m and 0.5 m) and fixed contraction ratio was investigated on hydraulic parameters of shock waves using experimental model (models 1 and 2). For achieving to this goal, values of height and instantaneous velocity were measured in various points of shock waves observed in contractions for four Froude Numbers. In general, non-uniform distribution of velocity and turbulence intensity profiles were completely clear. Comparing results of models 1 and 2, show that the height and velocity values of formed waves in the model 2 is so much more than the model 1. Also, motion of the shock waves was accompanied with longitude gradient decrease of turbulence kinetic energy. The results of the present research can be very useful for designer engineers.
کلیدواژه‌ها
Contraction؛ Shock wave؛ Supercritical flow؛ Turbulence intensity؛ Turbulence kinetic energy
مراجع
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