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This paper simulates air flow in inlet manifold in some engine with CFD calculation method. Results coincide well with experimental data, which indicates that turbulence in bend is the principal factor of flow loss. On the basis of spatial arrangement, the structure of inlet manifold is redesigned and optimized. Cross section of bend is designed as oblate shape and the inlet cross-section of manifold...
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...
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