Fluent-based fan wake flow automatic acquisition method

Abstract

The invention belongs to the related technical field of fan wake flow calculation, and discloses a Fluent-based fan wake flow automatic acquisition method. The method comprises the following steps: (1) inputting an airfoil parameter file, an aerodynamic parameter file, a blade tip wind speed ratio and a wind wheel radius of a fan into three selected actuating models respectively, and calculating afan aerodynamic load by using a C ++ self-compilation module; (2) exporting a Fluent user-defined function file and a Fluent log file by using the C ++ self-compilation module; (3) after the Fluent log file completes basic setting of a Fluent solver, obtaining a Fluent log file; and automatically starting the Fluent solver by adopting a batch processing module, and importing the Fluent user-defined function file and the Fluent log file into the Fluent solver, so that the Fluent solver completes automatic simulation of the fan wake flow. The method is good in applicability and high in flexibility.

Description

technical field [0001] The invention belongs to the related technical field of fan wake calculation, and more specifically relates to a Fluent-based method for automatically obtaining fan wake. Background technique [0002] In recent years, wind power has developed rapidly and has become a research hotspot in the field of new energy. However, the wake deceleration and turbulent effects generated by the upstream unit will reduce the power generation efficiency of the downstream unit, increase the load, and seriously affect the operation performance of the downstream unit. Therefore, it is very necessary to carry out numerical simulation of the fan wake. [0003] At present, those skilled in the art have done some research. For example, due to the complexity of the airfoil of the fan, the use of a full geometric model for full numerical simulation makes the body-fitted mesh division very difficult and the number of meshes is huge. The usual method is to use the actuation Howe...

AI Technical Summary

Problems solved by technology

However, the wake deceleration and turbulent effects produced by the upstream unit will reduce the power generation efficiency of the downstream unit, increase the load, and seriously affect the operation performance of the downstream unit. Therefore, it is very necessary to carry out numerical simulation of the fan wake.

[0003] At present, those skilled in the art have done some research. For example, due to the complexity of the airfoil of the fan, the use of a full geometric model for full numerical simulation makes the body-fitted mesh division very difficult and the number of meshes is huge. The usual method is to use the actuation However, the actuation method requires high professional knowledge of the simulator, and it needs to be proficient in computational fluid dynamics and fan aerodynamics to complete it.

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