Investigation of the Acoustic Surface Power on a Cooling Fan Using the Mesh Morpher Optimizer 2019-01-0833
A cooling fan is an essential device of the engine cooling system which is used to remove the heat generated inside the engine from the system. An essential element for successful fan designs is to evaluate the pressure over the fan blade since it can generate annoying noises that influence performance of the fan blades. Investigation of the Acoustic Surface Power for a cooling fan model is an important task for estimating the weak regions over the surface and for proposing a design guidance which can help improve the acoustic performance of the fan model. The implementation of computational fluid dynamics (CFD) with support of mesh morphing, along with the development of optimization techniques, can provide a quick evaluation of the acoustic performance of the fan model and improve the design.
CFD techniques and optimization methodology will be applied to improve the acoustic surface power distribution over a cooling fan surface. The noise control must be undertaken by considering proper design factors and features. Different aeroacoustic optimization techniques are used to examine and reduce the effect of noise from the cooling fan to provide a reliable design guidance in the engineering field. The Mesh Morpher Optimizer (MMO) in ANSYS Fluent is applied in conjunction with SIMPLEX and Powell’s models for the broadband acoustic modeling. Consequently, the design process of cooling fan with high performance can be reasonably practicable and fairly inexpensive. Therefore, this approach can be considered as one way to reduce the design time and cost to leverage the total capital because time is a key factor in the manufacturing process.