An experimental device for sub-hypershear layer research with wide-range adjustable flow parameters
An experimental setup, wide-ranging technology, applied to the field of embedded rocket ramjet combined engine, to achieve the effect of easy realization
Active Publication Date: 2019-04-19
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
Based on domestic and foreign researches, most of the current experimental devices for sub-supershear layer research are conducted for the convective Mach number Mc<1, where
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[0021] In the present invention, a sub-hypershear layer research experimental device with adjustable flow parameters in a wide range, such as figure 1 and figure 2 As shown, it includes a test section cavity 1 and an observation section cavity 2 that are connected and internally communicated. The front end of the test section cavity 1 is used to communicate with the subsonic airflow device; The supersonic nozzle 3, the supersonic nozzle 3 is connected with the high-temperature airflow, and the high-temperature airflow passes through it to become the supersonic airflow; The rear end of the section cavity 1; the width of the supersonic nozzle 3 is consistent with the width of the test section cavity 1. After the supersonic nozzle 3 is installed, the test section cavity 1 is divided into two independent flow channels up and down, so that The subsonic air flow is divided into two corresponding paths, and passes through the two flow channels. The supersonic air flow and the subso...
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The invention discloses an incoming flow parameter wide range adjustable sub-super-shear layer research experimental device comprising a test section cavity and an observation section cavity which areconnected and internally communicated. The front end of the test section cavity is used for being communicated with a subsonic airflow device. Supersonic nozzles are installed in the test section cavity along the axial direction. The supersonic nozzles are communicated with high temperature airflow and internally used for penetration of the high temperature airflow to be converted into the subsonic airflow. The supersonic nozzles and the test section cavity are consistent in direction, and the rear end of the supersonic nozzles penetrates out of the rear end of the test section cavity. The width of the supersonic nozzles is consistent with that of the test section cavity. After installation of the supersonic nozzles, the test section cavity is internally divided into upper and lower independent flow channels so that the entered subsonic airflow is enabled to be divided into two corresponding paths to penetrate through the two flow channels. The supersonic airflow and the subsonic airflow enter into the observation section cavity from the corresponding outlet and the two types of airflow is sheared and mixed during entering so that the research of the incoming flow parameter wide range adjustable sub-super-shear layer development characteristics can be met.
Description
technical field [0001] The invention belongs to the technical field of embedded rocket ramjet combined engine, and in particular relates to a sub-supershear layer research experiment device with adjustable incoming flow parameters in a wide range. Background technique [0002] Embedded rocket ramjet engine has attracted extensive attention because it can take into account the high thrust performance of rocket engine and the high specific impulse performance of ramjet engine. Naturally, the research on the flow combustion problems involved in its working process is of great significance. The mixing flow process between the supersonic rocket wake and the subsonic ram jet has a direct impact on the efficient combustion of the combustor and the performance of the engine. Therefore, it is very necessary to study the compressible shear layers such as sub-hypershear layers. Compared with the general compressible shear mixed flow, the shear layer formed between the rocket exhaust g...
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Login to View More IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 李江马凯吕雪阳李强刘洋陈铮夏尚帅
Owner NORTHWESTERN POLYTECHNICAL UNIV