Ice slurry flow through gate valves _ local pressure loss coefficient

International Conference on the Sustainable Energy and Environmental Development

生态环境科学

Solek, M.^1 ; Mika, L.^2

Institute of Thermal and Process Engineering, Faculty of Mechanical Engineering, Cracow University of Technology, al. Jana Pawla II 37, Kraków

31-864, Poland^1

AGH University of Science and Technology, Faculty of Energy and Fuels, Department of Thermal and Fluid Flow Machines, Mickiewicza Av. 30, Kraków

30-059, Poland^2

关键词: Bingham liquids;    Bingham plastic;    Calculation results;    Experimental investigations;    Local pressures;    Loss coefficients;    Resistance calculation;    Transition point;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/214/1/012112/pdf
DOI  :  10.1088/1755-1315/214/1/012112

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The paper presents the calculation results of local pressure loss coefficient in three different models of a gate valve in their two opening positions. The study was carried out on ice slurry with the mass fraction of ice particles of 30%, 25%, 20%, 15%, 10% and 5%. The slurry is considered to be the Bingham Plastic liquid within this study and the local loss coefficient data were provided thanks to the obtained results of the local resistance calculations in the fittings tested in the experimental investigation. The transitional behavior of ice slurry has been detected. The value of the local pressure loss coefficient decreases firstly up until transition point then it remains constant in the turbulent flow regime. The ice crystals content directly determines its value, as the larger ice mass fraction in the mixture, the greater value of the loss coefficient. Declining opening position of the gate valves results in decreasing the value of the loss coefficient data in relation to the Reynolds number for Bingham liquid.