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Comprehensive comparison method between numerical simulation of warship wake field and wind tunnel test data

A wind tunnel test and numerical simulation technology, which is applied in electrical digital data processing, design optimization/simulation, special data processing applications, etc. Effects of wasting and using data with insufficient precision

Active Publication Date: 2019-07-12
CSSC SYST ENG RES INST
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Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a comprehensive comparison method between the numerical simulation of the ship's stern flow field and the wind tunnel test data, and to overcome the problems of large errors and poor applicability of the existing verification methods

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  • Comprehensive comparison method between numerical simulation of warship wake field and wind tunnel test data
  • Comprehensive comparison method between numerical simulation of warship wake field and wind tunnel test data
  • Comprehensive comparison method between numerical simulation of warship wake field and wind tunnel test data

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Embodiment Construction

[0030] Aiming at the deficiencies in the prior art, the present invention proposes a comprehensive comparison method between the numerical simulation of the ship's wake field and the wind tunnel test data, which solves the defects of waste of test data and insufficient accuracy of the used data in the prior art, and significantly improves the efficiency of the wake flow field. For the prediction accuracy of the field, the method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] 1. Classification of measurement areas

[0032] According to the take-off and landing routes of the helicopter, the stern flow field area is divided into two types: important sensitive test area and common test area.

[0033] (1) Division of important and sensitive test areas

[0034] Such as figure 1 Shown is the schematic diagram of the important measurement area in the method of the present invention, according to the application charac...

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Abstract

The invention discloses a ship stern flow field numerical simulation and wind tunnel experiment data comprehensive comparison method. The method comprises the steps of firstly dividing a stern flow field area into an important sensitive test area and a common test area according to a takeoff and landing path of a helicopter, using a vertical speed component of the helicopter as a key variable influencing takeoff and landing, using a lateral speed component of the helicopter as a main variable influencing takeoff and landing, and using a longitudinal speed component of the helicopter as a general variable influencing takeoff and landing; acquiring CFD data, PIV test data, then computing matching errors of vertical, lateral and longitudinal speed components, thus acquiring data quality of the important sensitive test area and the common test area, at last completing data fusion according to the data quality, and acquiring the final data.

Description

technical field [0001] The invention relates to a wind tunnel measurement technology, in particular to a method for comprehensively comparing numerical simulation of ship stern flow field and wind tunnel test data. Background technique [0002] The test methods for the wake field mainly include numerical simulation (CFD) and PIV wind tunnel test. The data obtained are the three-component distribution of flow field velocity, pressure distribution, and turbulence distribution. The variables are axial velocity, Vertical velocity and lateral velocity; both methods have their own advantages and disadvantages. Therefore, after obtaining the data of both parties, a comparative analysis is required to judge the validity of the data. [0003] At present, western countries mainly analyze the data of the two parties by comparing the range of the stern recirculation zone, the position of the vortex core and the velocity vector of the stern space point, and generally consider the wind t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 宗昆李海旭王金玲周海光龚晨
Owner CSSC SYST ENG RES INST
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