Add to ORKGPump efficiency drops largely with a decrease in specific speed Ns in a low Ns range. In order to reveal the mechanism of large loss and to find a method of improving impeller performances in the range of Ns<100 [rpm,m3/min, m], seven kinds of centrifugal impellers were tested in a axisymmetric parallel-walled diffuser channel. Three impellers have the same outlet angle of β2=22.5 with a different Ns from 80 to 200 and the other four have radial vanes (β2=90) ranging from Ns=50 to 80, three of which are closed type and one is full open type. The results showed that the conventional pump design is not suitable for a very low Ns range and that the discharge at the optimum efficiency point (BEP) is far from the designed discharge. The Q3D calc...
Centrifugal pumps are designed to have their BEP (Best Efficiency Point) for a given flow rate, hydr...
The internal flow in a centrifugal pump with semi-open impeller is visualized and measured by PTV me...
Combined numerical simulation with experiment, blade wrap angle, and blade exit angle are varied to ...
Pump efficiency drops rapidly with a decrease in specific speed Ns in the very low Ns range. In orde...
In the range of very low specific-speed (ns≦100 [m, m3/min, rpm]), performance of a centrifugal pump...
Lecturepg. 16Traditional commercial centrifugal pump designs have specific speeds (Ns) greater than ...
A numerical investigation is carried out on a centrifugal pump to show the effect of the impeller bl...
Pump efficiency drops rapidly with a decrease in specific speed n_s in the very low n_s range. In or...
Lecturepg. 67It is well known that backflow regimes at the impeller inlet can lead to performance in...
In order to analyze the effect of impeller with different slot widths on the performance of the low-...
The paper discusses the performance of the pump in relation to the impeller. The impeller section is...
The article presents results of numerical analyzes, which raise a subject of influence of the cooper...
Lecturepg. 31The hydraulic coverage in the low specific speed region has been ignored by most centri...
The paper discusses the performance of the pump in relation to the impeller. The impeller section is...
Lecturepg. 13Following a brief description of the general suction performance of pumps and starting ...
Centrifugal pumps are designed to have their BEP (Best Efficiency Point) for a given flow rate, hydr...
The internal flow in a centrifugal pump with semi-open impeller is visualized and measured by PTV me...
Combined numerical simulation with experiment, blade wrap angle, and blade exit angle are varied to ...
Pump efficiency drops rapidly with a decrease in specific speed Ns in the very low Ns range. In orde...
In the range of very low specific-speed (ns≦100 [m, m3/min, rpm]), performance of a centrifugal pump...
Lecturepg. 16Traditional commercial centrifugal pump designs have specific speeds (Ns) greater than ...
A numerical investigation is carried out on a centrifugal pump to show the effect of the impeller bl...
Pump efficiency drops rapidly with a decrease in specific speed n_s in the very low n_s range. In or...
Lecturepg. 67It is well known that backflow regimes at the impeller inlet can lead to performance in...
In order to analyze the effect of impeller with different slot widths on the performance of the low-...
The paper discusses the performance of the pump in relation to the impeller. The impeller section is...
The article presents results of numerical analyzes, which raise a subject of influence of the cooper...
Lecturepg. 31The hydraulic coverage in the low specific speed region has been ignored by most centri...
The paper discusses the performance of the pump in relation to the impeller. The impeller section is...
Lecturepg. 13Following a brief description of the general suction performance of pumps and starting ...
Centrifugal pumps are designed to have their BEP (Best Efficiency Point) for a given flow rate, hydr...
The internal flow in a centrifugal pump with semi-open impeller is visualized and measured by PTV me...
Combined numerical simulation with experiment, blade wrap angle, and blade exit angle are varied to ...