Abstract: The present disclosure discloses a method and system for reconstructing missing information in a damaged turbulent flow field. A second mask is randomly generated based on a first mask and is utilized in the network training, which significantly enhances the generator network's ability to recognize multiple damaged regions and generalize different damage forms. A combined loss function is introduced, which not only evaluates the overall difference between a reconstructed turbulent flow field and an original turbulent flow field, but also evaluates the difference in feature mapping at different levels of a pretrained network. This dual evaluation ensures accurate reconstruction of flow field information from macro to micro scales. Such a semi-supervised learning strategy permits network training without complete turbulent flow field data.

Abstract: A velocity measurement method, system, device and apparatus and storage medium, as well as a velocity field measurement method and system are provided. The velocity measurement method includes: inputting a single-particle image to a trained neural network model to obtain a predicted result image; a pixel position of a particle in the predicted result image is a predicted position of a particle in the single-particle image; the particle in the single-particle image is configured to characterize one particle in a two-dimensional (2D) flow field measurement region; the trained neural network model is trained by taking a previous frame of particle image in a particle image pair as an input and a subsequent frame of particle image as an output true value; and determining a predicted velocity at the pixel position of the particle in the single-particle image.

Abstract: Disclosed are a wing and a method for improving a control efficiency of a two-dimensional (2D) airfoil rudder surface. A technical solution is realized by changing an original symmetric airfoil rudder surface into an asymmetric airfoil rudder surface, mounting the asymmetric airfoil rudder surface and a main wing in a misaligned manner to form a gap, and utilizing a gap effect to interfere with a flow on an upper wing surface of the rudder surface, allowing the rudder surface to generate a larger moment, thereby improving a control efficiency of a 2D airfoil rudder surface. According to the present disclosure, a rudder surface control efficiency is greatly improved by simple structural optimization; a pilot is easy to perform operations in a control process; and a control device can utilize an airplane's own components, without introducing large power energy and other driving equipment, no additional load on the airplane.

Abstract: The present application provides a method and apparatus for simultaneous measurement of flow-field velocity and temperature, and a storage medium.

Abstract: The present disclosure provides a device and method for calibrating a particle image velocimetry (PIV) image based on laser linear arrays, and relates to the technical field of laser velocity measurement and image restoration. The present disclosure can solve the problem of image distortion caused by a shock wave of a model in a hypersonic wind tunnel, thereby realizing distortion capture and correction. The device includes a laser emission component configured to emit equidistant laser linear arrays; an optical component configured to perform light splitting on laser rays to form a laser grating in a test observation region; a camera configured to acquire a distorted laser grating image when a working condition of a wind tunnel test section model is adjusted to a working condition of a PIV test; and a background processor configured to calibrate and restore the distorted laser grating image with a neural network-based distortion-restoring calibration algorithm.

Abstract: Disclosed are a root canal fluid filling device and method. The root canal fluid filling device includes a root canal filling device box, including an upper box body and a lower box body which are arranged in upper and lower partitions and detachable; a positive and negative pressure generating apparatus, arranged in the lower box body; an air pressure monitoring apparatus, arranged in the lower box body and connected to the positive and negative pressure generating apparatus; an air pressure recovery apparatus, arranged in the lower box body; an auxiliary positioning apparatus, including an auxiliary positioning crown which is respectively connected to the positive and negative pressure generating apparatus, the air pressure monitoring apparatus and the air pressure recovery apparatus and is to be sleeved outside and cemented to a tooth to be subjected to root canal therapy; a control display apparatus; and a power supply apparatus.

Abstract: Disclosed are a root canal fluid filling device and method. The root canal fluid filling device includes a root canal filling device box, including an upper box body and a lower box body which are arranged in upper and lower partitions and detachable; a positive and negative pressure generating apparatus, arranged in the lower box body; an air pressure monitoring apparatus, arranged in the lower box body and connected to the positive and negative pressure generating apparatus; an air pressure recovery apparatus, arranged in the lower box body; an auxiliary positioning apparatus, including an auxiliary positioning crown which is respectively connected to the positive and negative pressure generating apparatus, the air pressure monitoring apparatus and the air pressure recovery apparatus and is to be sleeved outside and cemented to a tooth to be subjected to root canal therapy; a control display apparatus; and a power supply apparatus.

Abstract: The present disclosure provides a device and method for calibrating a particle image velocimetry (PIV) image based on laser linear arrays, and relates to the technical field of laser velocity measurement and image restoration. The present disclosure can solve the problem of image distortion caused by a shock wave of a model in a hypersonic wind tunnel, thereby realizing distortion capture and correction. The device includes a laser emission component configured to emit equidistant laser linear arrays; an optical component configured to perform light splitting on laser rays to form a laser grating in a test observation region; a camera configured to acquire a distorted laser grating image when a working condition of a wind tunnel test section model is adjusted to a working condition of a PIV test; and a background processor configured to calibrate and restore the distorted laser grating image with a neural network-based distortion-restoring calibration algorithm.

Abstract: Disclosed are a wing and a method for improving a control efficiency of a two-dimensional (2D) airfoil rudder surface. A technical solution is realized by changing an original symmetric airfoil rudder surface into an asymmetric airfoil rudder surface, mounting the asymmetric airfoil rudder surface and a main wing in a misaligned manner to form a gap, and utilizing a gap effect to interfere with a flow on an upper wing surface of the rudder surface, allowing the rudder surface to generate a larger moment, thereby improving a control efficiency of a 2D airfoil rudder surface. According to the present disclosure, a rudder surface control efficiency is greatly improved by simple structural optimization; a pilot is easy to perform operations in a control process; and a control device can utilize an airplane's own components, without introducing large power energy and other driving equipment, no additional load on the airplane.

Abstract: The present disclosure provides a velocity measurement method, system, device and apparatus and storage medium, as well as a velocity field measurement method and system.