Acoustic wind tunnel with variable spouts

A nozzle and acoustic technology, applied in the field of acoustic wind tunnel design, can solve problems such as limiting the functional diversity of acoustic wind tunnels, and achieve the effect of simple and convenient function conversion, easy use and strong functionality

Pending Publication Date: 2019-10-11
NAVAL UNIV OF ENG PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the design of conventional acoustic wind tunnels has certain limitations, and the flow field and sound field are immutable, which limits the diversity of acoustic wind tunnel functions

Method used

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  • Acoustic wind tunnel with variable spouts
  • Acoustic wind tunnel with variable spouts
  • Acoustic wind tunnel with variable spouts

Examples

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Embodiment

[0019] exist Figure 2 ~ Figure 4 The illustrated embodiment is a specific implementation of a variable nozzle acoustic wind tunnel. figure 2 The acoustic wind tunnel shown is generally designed according to the conventional acoustic wind tunnel, and a new design has been made at the nozzle and collection port of the wind tunnel. It is designed as a detachable structure and assembled with the contraction section and the diffusion section of the wind tunnel respectively. , where the entrance of the wind tunnel is a combination of two parts: a fixed shrinkage section (3) and a detachable nozzle (4); the outlet part of the anechoic chamber of the wind tunnel is divided into: a detachable collection port (5) and a fixed Diffusion section (6) combination of two parts. If the wind tunnel has other diffuse sections, no decomposition is required. Although it is assembled in two parts, the fixed section and the detachable section, it does not affect the normal function of the acoust...

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Abstract

An acoustic wind tunnel with variable spouts is characterized in that the spouts and collection ports in an anechoic chamber of the acoustic wind tunnel adopt detachable structures according to the design; and the different spouts and the different collections ports are adopted as needed to obtain different flow fields and sound fields, so that functions of the acoustic wind tunnel are extended. The acoustic wind tunnel specifically comprises a fixed retraction section, the varying detachable spouts, a fixed expansion section, the varying detachable collection ports, detachable supports, and installation fasteners such as bolts. When the acoustic wind tunnel is used as acoustic wind tunnels with the different spouts, the different spouts, the different collection ports and the corresponding detachable supports only need to be installed to achieve the variability of the spouts, so that the functions of the acoustic wind tunnel are extended; and the acoustic wind tunnel has the beneficial effects of high functionality, high simplicity and convenience in use, high economization, high convenience in transformation, etc.

Description

[0001] 1. Technical field [0002] The invention relates to a design of a wind tunnel, in particular to a design of an acoustic wind tunnel. [0003] 2. Background technology [0004] A wind tunnel is a pipeline-shaped experimental device that can artificially generate and control airflow to simulate the flow of air around an aircraft or object, measure the effect of airflow on an object and observe physical phenomena. It is used for aerodynamic experiments The most commonly used and most effective tool. Wind tunnel experiments are an indispensable part of aircraft development. It not only plays an important role in the research and development of aviation and aerospace engineering, but with the development of industrial aerodynamics, it is even more indispensable in the fields of navigation, transportation, housing construction, and wind energy utilization. Acoustic wind tunnel (also known as anechoic wind tunnel) is a special wind tunnel facility for aerodynamic-acoustic te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/02
CPCG01M9/02
Inventor 方斌茹履京李瀚钦周其斗
Owner NAVAL UNIV OF ENG PLA
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