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Quick prediction method for hydrodynamic performance of two-dimensional airfoil profile

A two-dimensional airfoil and prediction method technology, which is applied in the field of numerical simulation, can solve the problems that the lift and drag coefficients of various airfoils cannot be obtained conveniently and quickly, so as to avoid manual input instructions, improve calculation efficiency, and reduce running time. Effect

Inactive Publication Date: 2021-01-15
JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH +1
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in the prior art, the lift and drag coefficients of various airfoils cannot be obtained conveniently and quickly.

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  • Quick prediction method for hydrodynamic performance of two-dimensional airfoil profile
  • Quick prediction method for hydrodynamic performance of two-dimensional airfoil profile
  • Quick prediction method for hydrodynamic performance of two-dimensional airfoil profile

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Embodiment Construction

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0049] With the continuous improvement of computational fluid dynamics and computational hydrodynamics methods and the continuous improvement of computer performance, the calculation time required for numerical simulation has been greatly reduced. At present, CFD software is usually used for numerical calculation in hydrodynamic design and analysis. It is very important to use computational fluid dynamics numerical calculation method to supplement the experimental me...

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Abstract

The invention relates to the technical field of numerical simulation, in particular to a quick prediction method for hydrodynamic performance of a two-dimensional airfoil profile, which comprises thesteps of performing modeling and mesh generation on a two-dimensional airfoil through Python; writing the grids of the two-dimensional airfoil profile into a block MeshDict file under a correspondingsystem; setting a boundary condition, wherein the boundary condition is used for calculating a lift-drag coefficient and a surface pressure coefficient of the airfoil; calling OpenFOAM by using a bashscript to carry out continuous calculation to obtain the two-dimensional airfoil hydrodynamic performance parameters; and exporting the two-dimensional airfoil hydrodynamic performance parameters. According to the method, manual modeling and grid drawing are not needed, time is greatly saved, an instruction does not need to be input manually, the OpenFOAM can be continuously solved, a post-processing result does not need to be exported manually, manual data entry is avoided, and design automation is achieved.

Description

technical field [0001] The invention relates to the technical field of numerical simulation, in particular to a method for quickly predicting the hydrodynamic performance of a two-dimensional airfoil. Background technique [0002] The method of numerical simulation is similar to an experiment carried out on a computer, such as the flow around a specific hydrofoil, and the calculation results are visualized on the computer through numerical simulation, so that various details of the flow field can be seen. Obtaining the flow field, pressure distribution and hydrodynamic performance around the airfoil plays an important role in the study of airfoil flow separation, wake formation and vortex interaction. Typically, the flow field over an airfoil is obtained by solving the Navier-Stokes equations on a computational grid with appropriate boundary conditions, a technique known as Computational Fluid Dynamics (CFD). [0003] For a hydrofoil, one of the most important tasks is to o...

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Application Information

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IPC IPC(8): G06F30/28G06F8/30G06F111/10
CPCG06F8/315G06F30/28G06F2111/10
Inventor 王龙滟罗朝晖徐健谢军航罗伟陈阳周运凯袁建平
Owner JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH
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