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Profile of the FIN-MP airfoil was used as the basic section of vertical axis wind rotor blade. Emphasis was placed on the aerodynamic performance of the wind rotors with different length? of blade chord, while the blade height, rotor diameter and blade's spiral angle are respectively uniform for the studied rotors. Three-dimensional and unsteady simulation was carried out for the flow field around...
In this study, CFD simulations are utilized to perform flow visualization, torque calculation, efficiency estimation, and noise analysis. For demonstration purpose, an 80 mm-diameter backward-inclined (BI) centrifugal fan is chosen to serve as the research subject. The result indicates that the P-Q curve and the sound pressure level (SPL) spectrum of the experiment are in agreement with those of numerical...
Computational Fluid Dynamics (CFD) simulation for two types of heavy commercial vehicle (one with aerodynamic drag reduction devices and the other without) is performed to investigate their aerodynamic characteristics in this paper. Through the analysis of airflow and pressure distribution on the full vehicle surface, the drag reduction mechanism and the influence of these drag reduction devices on...
The coefficient of heat transfer is comparatively low on the condition of forced air convection. The air helical flow in the shellside can improve the heat transfer coefficient of air forced flow and bring lesser pressure loss. This paper introduces the simulation of air helical flow outside of upright tube with the software PHOENICS on the experimental work condition. Based on the reasonal simplification...
For the analysis of car interior noise at high speed, the influence of autobody aerodynamics should be taken into account, besides the vibration and acoustic radiation of powertrain, the random excitation from road and the vibration inputs of tires, and so on. A model of CFD was built. And the most turbulent area of autobody surfaces was located. The spectrum of average aerodynamic pressure of monitoring...
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