Numerical study on the performance of rotational supercavitating evaporator with optimized blade shape

7th International Conference on Pumps and Fans

机械制造;工业技术

Zheng, Z.Y.^1 ; Li, Q.^1 ; Li, F.C.^1 ; Kulagin, V.A.^2

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin

150001, China^1

Department of Heat Technology and Fluid Dynamics, Siberian Federal University, Krasnoyarsk

660041, Russia^2

关键词: Blade shapes;    Empirical formulas;    Novel devices;    Optimal design;    Supercavitating;    Supercavitating flows;    Supercavitation;    Supercavity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/129/1/012014/pdf
DOI  :  10.1088/1757-899X/129/1/012014

学科分类：工业工程学

来源: IOP

【 摘 要 】

Based on supercavitation effect, a novel device named Rotational Supercavitating Evaporator (RSCE) has been designed for desalination. In order to improve the performance of RSCE, the optimal design of three-dimensional blade shape is performed by utilizing the empirical formulae which have been validated before. Numerical simulation is then conducted on the supercavitating flow in RSCE with the optimized blade, and the supercavity dimension generated by rotational cavitator is obtained, which is further compared with the above- mentioned empirical formulae obtained by two-dimensional calculations. The results show that the supercavity length obtained by numerical simulation on the optimized blade increases with the increase of radius at first, and then decreases at larger radii, which is much smaller than the result of empirical formula at each radius.