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Payam Khosravinia

Payam Khosravinia

Academic rank: Assistant Professor
ORCID:
Education: PhD.
ScopusId: 43215
Faculty: Faculty of Agriculture
Address: University of Kurdistan, Pasdaran St, Sanandaj, Kurdistan, Iran
Phone: 087-33664600-8-داخلی 3340

Research

Title
Experimental analysis of shock waves turbulence in contractions with rectangular sections
Type
JournalPaper
Keywords
Contraction,Shock wave,Supercritical flow,Turbulence intensity,Turbulence kinetic energy.
Year
2019
Journal Journal of Computational and Applied Research in Mechanical Engineering
DOI
Researchers Mohammad reza nikpour ، Payam Khosravinia ، Davod Farsadizadeh

Abstract

Formation of shock waves has an important role in supercritical flows studies. These waves often occur during passage of supercritical flow in the nonprismatic 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 models (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, nonuniform distribution of velocity and turbulence intensity profiles were completely clear. Comparing the results of models 1 and 2 shows that the height and velocity values of formed waves in the model 2 is so much more than that of 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 design engineers.