@article{Miltykh_Sotnyk_2016, title={Analysis of the impact of impeller outlet width on the steepness of pressure characteristic}, volume={3}, url={https://journals.uran.ua/eejet/article/view/72122}, DOI={10.15587/1729-4061.2016.72122}, abstractNote={<p>The impeller outlet width is one of the most important geometrical parameters, which has a significant effect on the pressure characteristic of centrifugal pumps. The steepness of the pressure characteristic, in turn, determines selection of the pump control in the system. Finding a mathematical dependency between them will make it possible to design the impellers of centrifugal pumps with a predetermined steepness.</p><p>To find the dependence between the impeller outlet width and the steepness of a pressure characteristic, we carried out numerical simulation. 30 double-entry impellers of centrifugal pumps with a specific speed from 80 to 210 with different values of the width of the impeller were simulated.</p><p>Using numerical modeling data, we established dependences between the impeller outlet width b<sub>2</sub> and the steepness of the pressure characteristic K<sub>H</sub>, and also consumable parameter q<sup>р</sup>, of the viewand . The coefficients a, k, E and F in the equations are variable and depend on the design features of Impeller. In order to use the established dependencies in the design of any double-entry impellers, it is necessary to determine the main geometric parameters of the impellers, which greatly influence the coefficients a, k, E and F.</p>}, number={7(81)}, journal={Eastern-European Journal of Enterprise Technologies}, author={Miltykh, Viktoriya and Sotnyk, Mykola}, year={2016}, month={Jun.}, pages={15–20} }