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Edit: Standard Electrical Co., Ltd. Shenzhen wind turbine experts more price and specifications, please visit our Ali official website: http: //fbemf2014.1688.com/ blower air purifier model specifications and more variety, more favorable price factory direct supply retail Wholesale! ! The following information is taken from the network, for reference only! Compare impeller exit velocity derived from Fluent in different conditions at the impeller exit point centerline position (see Figure 1) speed data re-use Matlab to draw the graph shown in Figure 5. The starting point of the abscissa is 0 ° axial section (see FIG. 1), shown in the flow direction of the gas within the volute curve (FIG. 6, FIG. 7 is obtained by the same method). Report by Fluent The menu can find: Flow coefficient of 0.17, 0.21, 0.222, 0.24, the average speed of the impeller exit were 40.294m / s, 39.780m / s, 47.099m / s, 39.168m / s. It can be seen at low flow and high flow impeller outlet average velocity is less, but in the most efficient conditions (flow coefficient = 0.222) was significantly greater than the rate of speed of other conditions, 17.5% higher than approx. And in the most efficient conditions, leaves Face and non-working surface velocity magnitude of the difference was significantly smaller than the other operating point, indicating that the most efficient impeller exit flow field conditions more uniform, thus reducing the flow process loss. In the narrow stream hang low flow velocity near the volute tongue is greater than at high flow speeds. Small hang in a wide stream flow and high flow rate consistent. As can be seen from the figure volute tongue only reduce the speed of the airflow at low flow decreased 4.47% (size of 1.8m / s), high flow decreased 7.9% (size of 3.1m / s). Obviously large flow rate volute tongue of the relatively large changes. Due to the complex centrifugal fan impeller structure, the implementation of three-dimensional solid simulation of computer hardware requirements are relatively high. Thus, many researchers put the model was simplified, just pick a runner or a unit for the study, while ignoring asymmetry Asymmetry cause flow volute, which is the actual flow relatively large difference between the results It is not reliable.