After you have people with new tilting it away from the fans? Easy to install, low power, low noise

Edit: Standard Electrical Co., Ltd. Shenzhen wind turbine experts more price and specifications, please visit our Ali official website: http: //fbemf2014.1688.com/ you there are people who leave with new fans after tilting it? Easy to install, low power, low noise, Dongguan factory direct fan choice! The actual flow inside the centrifugal fan is the whole (including the impeller, volute and intake vent) three-dimensional viscous turbulent flow. But the main drawback of engineering design methods are: 1) viscous flow is not considered a one-dimensional or two-dimensional assumed; 2) impeller, volute is individually designed, air inlet is optional according to experience, and not considered part design interaction between; 3) to a considerable extent empirically or design, some important empirical coefficients selected can not assess the merits of the design phase; 4) at the design stage can not estimate the performance of the fan operating mode, fan performance only by Prototype Performance tests are given. This is a fundamental drawback of this method, always need more than design - prototype - Performance testing cycles to complete prototype development, it normally takes three to five cycles, and even more, to complete the development of a product, so long development cycle high cost. Modern methods (1991 to 2000) 2 centrifugal fan aerodynamic design - design conditions can only estimate the performance of the development of computer and computational fluid dynamics (CFD) technology, it is possible to use CFD numerical simulation of complex flow centrifugal fan inside field, estimated fan flow, total pressure and efficiency of the relationship between fan performance. 1991 turbomachinery CFD authority Lakshminarayana [3] First of turbomachinery CFD analysis and design techniques that commented, marking the beginning of CFD methods for turbomachinery compressor and turbine, but has not been for the fans, then we I realized that fans should start to calculate the flow field CFD reference to estimate the fan performance. CFD software first have to carry out the work, but there was no commercial CFD software, internal flow field is its own development program, I spent a lot of time, not how good, is not willing to transfer. We found from American Airlines and Space Agency (NASA) internal report published a "calculated using the non-orthogonal fitted coordinates incompressible three-dimensional flow field program," not only have a more detailed description, but also with all the source program. We immediately organized faculty and graduate students, in accordance with its programming ideas, sentence by sentence, paragraph by paragraph reconciliation, also found a lot of mistakes, and make some assessment of simple flow calculations, it took nearly a year to basically get through, then for pneumatic Good design performance of fans, and gradually apply it to flow fan parts inside, from the geometric modeling, computational domain and boundary conditions are determined, mesh generation, convergence conditions and the relaxation factor and other factors to determine the numerical calculation, and then build the fan numerical results post-processing and analysis, draw fan internal flow field analysis and performance prediction and measurement and numerical simulation method of comparison set, while computing while practice, while improved, continue to accumulate numerical fan experience. Fan internal flow field is the easier issues first, starting with the spiral flow does not move then to flow within the rotation of the impeller; the impeller flow calculations also start with a two-dimensional meridional channel, then the impeller three-dimensional flow computation; then the impeller and volute casing flow analysis (then do not have the volute calculation software - impeller - together with the numerical simulation of the air inlet duct and out of the machine), for the establishment of a modern method of centrifugal fan aerodynamic design foundation. On this basis, in 1996 we apply for the National Natural Science Fund Project "less than scientific study design method of centrifugal fan noise" was approved (approval 59575016,1996 ~ 1998) and Beijing Xishan Blower and develop the excellent performance of 7 35 product series (1997 to 2000), the official presentation of the aerodynamic design of centrifugal fan basic idea of ??modern methods, a total of three steps. To learn more about the story of a centrifugal fan! Please pay attention to the wind Standard Electrical Co. daily information! Please click on our Dongguan factory site: http: //fbemf2014.1688.com/ or http://www.fbemf.com, detailed specifications and prices, all in Ali Wang Pu. The new plant Address: Dongguan City, Guangdong Province Chung Chung industry Village Road on the 8th floor. Weathervane Electrical Co., Ltd. Fan specialists will be pleased to share with you! Low power, low noise, high cost! Dongguan factory direct fan choice! Weathervane electromechanical lot priced supply centrifugal fans, axial fans, external rotor fan, EC fan!