Two-fluid jet device capable of changing incoming flow state
A dual-fluid jet and flow state technology, applied in the field of wind tunnel experiments, can solve the problems that the supersonic jet device cannot change the incoming flow state and cannot meet the requirements of the experimental target, and achieves the realization of supersonic dual-fluid flow, quality change, and investment saving. Effect
Active Publication Date: 2020-01-21
ZHEJIANG UNIV
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Problems solved by technology
[0004] The invention provides a dual-fluid jet device capable of changing the incoming flow state to solve the technical problem that the existing supersonic jet flow device cannot change the incoming flow state and cannot meet the requirements of different experimental objectives
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[0031] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.
[0032] Reference figure 1 with Figure 8 A preferred embodiment of the present invention provides a two-fluid jet device with a changeable flow state, which is used to be placed in a wind tunnel, and includes a support 1 and a jet structure 2 supporting and connected to the support 1 above.
[0033] Such as Figure 1 to Figure 3 As shown in the figure, the support body 1 is provided with a gas connector 10 and an air flow channel 11 communicating with the gas connector 10. The jet structure 2 has a main gas stabilization cavity 20 communicating with the air flow channel 11, and the main gas stabilization cavity 20 is followed by a nozzle. The nozzle includes a jet constriction 21, a jet thr...
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The invention discloses a double-fluid flow-jetting device capable of changing the incoming flow state and arranged in a wind tunnel. The device comprises a support body and a flow-jetting structure connected on the support body in a support manner, the support body is provided with an air joint and an airflow channel communicating with the air joint, a main air stabilization chamber communicatingwith the airflow channel is formed in the flow-jetting structure, the rear of the main air stabilization chamber is connected with a flow-jetting contraction portion, a flow-jetting throat portion and a flow-jetting expansion portion in sequence, disturbance chambers mutually isolated from the main air stabilization chamber are also formed in the flow-jetting structure, the disturbance chambers are connected with an air-inlet pipe used for supplying a disturbance air source, one wallboard of each disturbance chamber is provided with a disturbance channel communicating the disturbance chamberand the outside in a penetrating manner, and the disturbance channel is used for mixing main flows sprayed by air in the disturbance chambers and a wind tunnel spraying pipe. According to the device,double-spraying-pipe shearing flow can be realized, the incoming flow state of the wind tunnel spraying pipe can be changed, experimental requirements in various conditions can be met, the investmentis reduced, and the replacement of wind tunnel equipment is avoided.
Description
Technical field [0001] The invention relates to the field of wind tunnel experiments, in particular to a two-fluid jet device capable of changing the state of incoming flow. Background technique [0002] The supersonic jet device is used for testing in a (hyper)sonic wind tunnel to achieve high-speed dual-nozzle flow. The supersonic flow or hypersonic flow in the wind tunnel is the mainstream flow, and the supersonic jet device is placed in the wind tunnel. During the test, the two high-speed flows will be sheared and mixed to form a high-speed dual-nozzle flow. [0003] The current supersonic jet device only includes: gas stabilization chamber, constriction, nozzle throat, expansion, and air inlet. Since the current supersonic jet device only mixes the jet flow with the main flow at the outlet, the incoming flow state of the main flow cannot be changed, and the incoming flow experiment state cannot be adjusted. The existing supersonic jet flow device cannot meet different experim...
Claims
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IPC IPC(8): G01M9/04
CPCG01M9/04
Inventor 陈伟芳赵文文杨华陈丽华吴昌聚
Owner ZHEJIANG UNIV