چكيده به لاتين
At first, this research deals with the general investigation of building pumps and different types of these pumps and continues with more focus on centrifugal pumps in order to investigate the effect of geometrical parameters of the impeller on the performance and consumption of these pumps. What mechanism do building pumps work with so that we can optimize these pumps and save on water and electricity consumption and provide the required pressure for our buildings as much as possible. With the investigations carried out in this research, it is clear that most of the pumps used are centrifugal pumps, for this reason, it has been tried to improve the performance of these pumps, especially the shape of the vanes used, the shape of the vanes, the angle of the vanes. , check how the blades are placed on the screen and the number of blades in the propeller, which play an important role. For this purpose, in order to investigate the geometrical changes in the blade, in this research, we performed simulations in the field of blade size, blade location, blade bending rate and the number of blades in the blade to compare with a reference sample that we used as a basis in the beginning, in order to make changes. Let's check what happens in different parameters, here we paid more attention to the head parameter.
After simulation, the best simulated propeller is the propeller with 100 mm blade, which gives us a head of 14.35 meters and works better than the base propeller, which is 28.30 meters, and it will save energy. became . But in this context, by increasing the head and improving the propeller, we realized that the probability of cavitation phenomenon increases and it will cause the failure of the propeller. We should note that if we change the geometry of the propeller, we must also consider the cavitation phenomenon.
