Disclosure of Invention
The invention provides a layered atmospheric turbulence simulation device, which solves the defects in the prior art, can simulate and generate turbulence fields with different intensities, can realize control and superposition of various different turbulence fields, can simulate atmospheric turbulence more truly, and ensures the reliability of experimental data.
The technical scheme of the invention is that the layered atmospheric turbulence simulation device comprises:
The box body is provided with a plurality of detection windows at the top and the bottom, a plurality of transparent partition boards are horizontally arranged in the box body, and the transparent partition boards are used for dividing the box body into a plurality of chambers;
the multiple groups of rectifying baffles are respectively and obliquely arranged in the multiple chambers; longitudinal projections of the detection windows are positioned between two adjacent rectification baffles;
The air circulation assemblies are respectively connected with the chambers, each air circulation assembly comprises a fan and a circulating pipe, the fans are arranged on the outer side walls of the chambers, the air outlets of the fans are communicated with the chambers, one end of each circulating pipe is connected to the air inlet of each fan, and the other end of each circulating pipe is communicated to one side of each chamber far away from the air inlet of each fan;
The temperature adjusting assemblies are respectively arranged in the chambers and used for adjusting the temperature in each chamber;
And the humidity adjusting assembly is connected with the plurality of chambers and is used for adjusting the humidity in each chamber.
In at least one embodiment of the present invention, the transparent partition plate is provided with two heating plates and two cooling plates, the two heating plates are respectively arranged on the lower surfaces of the top chamber and the middle chamber, and the two cooling plates are respectively arranged on the upper surfaces of the middle chamber and the bottom chamber.
In at least one embodiment of the invention, the humidity adjusting component comprises an ultrasonic smoke generator, a mist conveyer and a mist conveying pipe, wherein the ultrasonic smoke generator is arranged on the box body, an air inlet of the mist conveyer is communicated with an air outlet of the ultrasonic smoke generator, the mist conveying pipe is communicated with an outlet of the mist conveyer, three first branch pipes which respectively extend into the three chambers are arranged on the mist conveying pipe, the three first branch pipes are respectively positioned at positions of the chambers close to an air outlet of the fan, and the three first branch pipes are respectively provided with a flow dividing adjusting valve.
In at least one embodiment of the invention, the device further comprises a detection assembly, wherein the detection assembly comprises a plurality of temperature sensors, a plurality of humidity sensors and a plurality of anemometers, the temperature sensors are respectively arranged on the two transparent partition plates and the inner wall of the box body, the humidity sensors are respectively arranged in the three chambers, and the anemometers are respectively arranged in the three chambers.
In at least one embodiment of the present invention, the air blower is a speed-regulating air blower, and the plurality of air blowers, the two heating plates, the two cooling plates, the ultrasonic smoke generator, the plurality of temperature sensors of the mist conveyer, the plurality of humidity sensors and the plurality of pitot tube anemometers are in signal connection with the controller.
In at least one embodiment of the invention, a plurality of the chambers are detachably connected with a rectifying grid, the rectifying grid is positioned at one side of the chamber close to the air inlet of the fan, and a grid replacing window is arranged on the side wall of the box body.
In at least one embodiment of the invention, a liquid draining mechanism is arranged on one side of the box body, which is far away from the fan, and the liquid draining mechanism comprises a waste liquid pool and a liquid draining pipe, wherein the waste liquid pool is arranged on one side of the bottom end of the box body, which is far away from the fan, the top end of the waste liquid pool is connected with the liquid draining pipe, and three second branch pipes extending into the three chambers are arranged on the liquid draining pipe.
In at least one embodiment of the present invention, the side walls of the plurality of rectifying baffles are respectively provided with a rotating shaft penetrating out of the box body, and the rotating shafts are used for adjusting the inclination angle of the rectifying baffles.
In at least one embodiment of the invention, lifting guide rails are longitudinally arranged at four corners of the inner cavity of the box body, and four corners of the two transparent partition boards are connected with the lifting guide rails.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, through arranging the box body with the detection window, the transparent partition plate for separating the transparent box body into the plurality of chambers, the wind circulation assembly arranged on each chamber, the temperature adjustment assembly for adjusting the temperature in each chamber and the humidity adjustment for adjusting the humidity of each chamber, when the layered atmospheric turbulence simulation device is used for carrying out a laser atmospheric transmission experiment, horizontal wind and cold and hot gas convection can be generated in each chamber of the box body under different humidity conditions by adjusting the wind speed, the temperature and the humidity in each chamber, so that the turbulence conditions of the cold and hot convection and the lateral incoming wind of the gas in the natural atmospheric environment can be simulated, the control generation of a plurality of different turbulence fields can be simultaneously carried out by the layered design of the box body, the superposition state of a plurality of different turbulence fields can be simultaneously measured, the problem of insufficient single turbulence field is solved, the simulation is more similar to the natural condition, and the reliability of experimental data is ensured.
2. The invention sets up the humidity control assembly formed by ultrasonic wave smog generator, fog conveyer and fog conveyer pipe with a plurality of first branch pipes, this kind of humidity control assembly can be regarded as impurity particle adding device and tracer particle adding device at the same time, has enriched the gas composition, also is convenient for the back end to measure at the same time.
3. According to the invention, the rectifying grid is arranged in each cavity near the air inlet of the fan, and the gas flow path in the flow field can be changed more directly under the cooperation of the rectifying baffles in the cavities, so that the random movement of the atmosphere in the actual atmospheric environment is more approximated.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the first embodiment of the present invention;
FIG. 3 is a schematic diagram of the whole structure of the second embodiment of the present invention;
FIG. 4 is a schematic diagram of a cross-sectional structure of the present invention;
Fig. 5 is a circuit connection diagram of the present invention.
Reference numerals illustrate:
1. The device comprises a box body, 11, a detection window, 12, a transparent partition plate, 13, a cavity, 14, a grid replacement window, 15, a lifting guide rail, 2, a rectifying baffle plate, 21, a rotating shaft, 3, a wind circulation assembly, 31, a fan, 32, a circulation pipe, 4, a temperature regulation assembly, 41, a heating plate, 42, a cooling plate, 5, a humidity regulation assembly, 51, an ultrasonic smoke generator, 52, a mist conveyer, 53, a mist conveying pipe, 6, a detection assembly, 61, a temperature sensor, 62, a humidity sensor, 63, an anemometer, 7, a rectifying grid, 8, a liquid discharging mechanism, 81, a waste liquid pool, 82 and a liquid discharging pipe.
Detailed Description
The drawings in the present invention are not necessarily drawn to scale, and the specific dimensions and numbers of the various features may be any according to actual needs. The drawings described in the present invention are only schematic in structure.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. "inner", "outer", "upper", "lower", "far", "near", "front", "rear", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.
Atmospheric turbulence is an important movement pattern of the atmosphere. Various activities in humans and the nature, as well as the radiation of the sun, cause small changes in the atmospheric temperature, creating many turbulent eddies in the atmosphere, causing random changes in the atmospheric density, resulting in unordered, non-deterministic changes in the atmospheric refractive index. Such variations in physical quantity are irregular in space and time. Small changes in the refractive index of the atmosphere are analogous to creating individual small "lenses" in the atmosphere. The size of the "atmospheric lens" is approximately equal to the dimensions of turbulent eddies, the magnitude of which varies by the order of the wavelength of the light waves (10 -6), and this accumulation results in a significant non-uniformity of the atmospheric refractive index profile, thus causing random fluctuations in the wavefront of the light beam transmitted in a turbulent atmosphere, thereby causing atmospheric turbulence effects for a range of light transmissions such as beam jitter, intensity fluctuations, beam spread, and image point jitter. Atmospheric turbulence causes random changes in the refractive index of the beam, thereby destroying the coherence of the optical field, and macroscopically manifesting as atmospheric turbulence effects such as phase fluctuations, angle of arrival fluctuations, light intensity flicker, beam drift, etc. of the propagating beam. These effects become more severe as the propagation distance increases or the turbulence intensity increases. From the communication point of view, the atmospheric turbulence can cause adverse effects such as an increase in bit error rate, communication interruption, and the like. For other components of the space optical communication system, such as a tracking system and an adaptive optical system, the system parameters are closely related to the atmospheric turbulence. In order to improve the performance of the space optical communication system, special research on the light beam propagation characteristics in turbulent atmosphere is required, a method for overcoming the atmospheric turbulence effect is sought, and finally stable communication is realized. Because the long-distance laser atmosphere transmission experiment is time-consuming and labor-consuming and has poor repeatability, an atmosphere turbulence simulator capable of simulating atmosphere turbulence disturbance is urgently needed in scientific research and engineering design so that corresponding experiments can be carried out in a laboratory.
At present, more atmosphere turbulence simulation devices exist at home and abroad, and the existing atmosphere simulation devices are provided with hot air type atmosphere turbulence simulation devices and forced convection type atmosphere turbulence simulation devices. But most are single-layer fixed turbulence simulation generators, and no experimental device for atmospheric turbulence with a multi-layer structure exists.
In view of this, the present invention provides a layered atmospheric turbulence simulation device, which can simulate and generate turbulence fields with different intensities, and can realize control and superposition of various different turbulence fields, so as to simulate atmospheric turbulence more truly.
Referring to fig. 1 to 4, a layered atmospheric turbulence simulation apparatus includes:
The top and the bottom of the box body 1 are respectively provided with a plurality of detection windows 11 relatively, a plurality of transparent partition boards 12 are horizontally arranged in the box body 1, the plurality of transparent partition boards 12 are used for dividing the box body 1 into a plurality of chambers 13, and the transparent partition boards 12 are light heat-resistant partition boards;
The longitudinal projections of the detection windows 11 are positioned between two adjacent rectifying baffles 2;
The air circulation assemblies 3 are respectively connected with the chambers 13, each air circulation assembly 3 comprises a fan 31 and a circulating pipe 32, the fan 31 is arranged on the outer side wall of the chamber 13, an air outlet of the fan 31 is communicated with the chamber 13, one end of the circulating pipe 32 is connected to an air inlet of the fan 31, and the other end of the circulating pipe 32 is communicated to one side, far away from the air inlet of the fan 31, of the chamber 13;
The temperature regulating assemblies 4 are respectively arranged in the chambers 13, and the temperature regulating assemblies 4 are used for regulating the temperature in each chamber 13;
The humidity adjusting component 5 is connected with the chambers 13, the humidity adjusting component 5 is used for adjusting the humidity in each chamber 13, the layered design of the box body 1 can simultaneously control and generate a plurality of different turbulent flow fields, and the superposition state of the plurality of different turbulent flow fields can be measured simultaneously, so that the problem of insufficient diversity of a single turbulent flow field is solved, the simulation is closer to the natural condition, and the reliability of experimental data is ensured.
As an alternative embodiment, the transparent partition 12 is provided with two, and the temperature adjusting assembly 4 includes two heating plates 41 and two cooling plates 42, the two heating plates 41 being provided on the lower surfaces of the top chamber 13 and the middle chamber 13, respectively, and the two cooling plates 42 being provided on the upper surfaces of the middle chamber 13 and the bottom chamber 13, respectively.
As an alternative embodiment, the humidity adjusting assembly 5 includes an ultrasonic smoke generator 51, a mist conveyer 52 and a mist conveyer pipe 53, the ultrasonic smoke generator 51 is disposed on the box 1, an air inlet of the mist conveyer 52 is communicated with an air outlet of the ultrasonic smoke generator 51, the mist conveyer pipe 53 is communicated with an outlet of the mist conveyer 52, three first branch pipes extending into the three chambers 13 are disposed on the mist conveyer pipe 53, the three first branch pipes are located at positions of the chambers 13 close to an air outlet of the fan 31, and a shunt adjusting valve is disposed on the three first branch pipes and is used for adjusting the size of mist entering each chamber 13 so as to adjust and control humidity in each chamber 13.
As an alternative embodiment, the device further comprises a detection assembly 6, wherein the detection assembly 6 comprises a plurality of temperature sensors 61, a plurality of humidity sensors 62 and a plurality of anemometers 63, the plurality of temperature sensors 61 are respectively arranged on the two transparent baffles 12 and the inner wall of the box body 1, the plurality of humidity sensors 62 are respectively arranged in three chambers 13, the plurality of anemometers 63 are respectively arranged in the three chambers 13, and in particular, the anemometers 63 are pitot tube anemometers.
As an alternative embodiment, the device further comprises a controller, wherein the fan 31 is a speed regulating fan, and the plurality of fans 31, the two heating plates 41, the two cooling plates 42, the ultrasonic smoke generator 51, the mist conveyer 52, the plurality of temperature sensors 61, the plurality of humidity sensors 62 and the plurality of anemometers 63 are all in signal connection with the controller, and the controller is used for controlling the temperature, the humidity and the wind speed in each chamber 13.
As an alternative embodiment, the plurality of chambers 13 are detachably connected with the rectifying grid 7, the side wall of the rectifying grid 7 is attached to the chamber 13, the rectifying grid 7 is located on one side of the chamber 13 close to the air inlet of the fan 31, and the side wall of the box 1 is provided with a grid replacing window 14.
As an alternative embodiment, a liquid draining mechanism 8 is arranged on one side of the box body 1 far away from the fan 31 for recycling and draining waste liquid, the liquid draining mechanism 8 comprises a waste liquid pool 81 and a liquid draining pipe 82, the waste liquid pool 81 is arranged on one side of the bottom end of the box body 1 far away from the fan 31, the top end of the waste liquid pool 81 is connected with the liquid draining pipe 82, three second branch pipes extending into the three chambers 13 are arranged on the liquid draining pipe 82, the second branch pipes can be designed as flexible pipes, and the design of the flexible pipes can normally drain the waste liquid in each chamber 13 after the transparent partition plate 12 is subjected to height adjustment.
As an alternative embodiment, all be equipped with the pivot 21 of wearing out box 1 on the lateral wall of a plurality of rectification baffles 2, pivot 21 is used for adjusting rectification baffle 2 inclination, all can be connected with manual runner on each pivot 21, adjust rectification baffle 2 inclination through manual runner, and also can connect driving motor respectively on each pivot 21, a plurality of driving motor all are connected with baffle angle controller signal, baffle angle controller signal connection and controller signal connection, realize rectification baffle 2 inclination's regulation through automatically controlled mode, specifically, rectification baffle 2 adjustment angle is 0~90, through adjusting different inclination of different rectification baffles 2, change to the gas flow path, supplementary bottom heating region hot air current and top cooling region cold air current's mixture simultaneously, increase the inside temperature gradient vertical distribution height of cavity.
As an alternative embodiment, lifting guide rails 15 are longitudinally arranged at four corners of the inner cavity of the box body 1, movable pieces matched with the lifting guide rails 15 are arranged at four corners of the two transparent partition plates 12, the lifting guide rails 15 can be common sliding rails, the movable pieces are in friction fit with the sliding rails, when the height of the transparent partition plates 12 is required to be adjusted, the lifting guide rails 15 can also be a plurality of electric telescopic rods which are respectively connected with the transparent partition plates 12 in a manual adjustment mode, the electric telescopic rods are respectively connected with a partition plate height adjuster in a signal mode, the partition plate height adjuster is connected with a controller in a signal mode, the height adjustment of the transparent partition plates 12 is realized in an electric control mode, the lifting guide rails 15 are used for controlling the vertical positions of the two transparent partition plates 12 to change the vertical duty ratio of each cavity 13, turbulence generated in each cavity 13 is controlled to influence specific gravity of detection signals in practical measurement, and specifically, the adjustment range is determined according to experiments, and the maximum range does not exceed the opening of a fan 31.
The working principle and the using method of the embodiment are as follows:
The invention provides a layered atmospheric turbulence simulation device, when the layered atmospheric turbulence simulation device is used for carrying out laser atmospheric transmission experiments, the height of a transparent baffle 12 is regulated according to requirements, the inclination angle of a rectification baffle 2 in each cavity 13 is regulated, a fan 31 is started in the experiment, circulating air is formed in each cavity 13 through the cooperation of the fan 31 and a circulating pipe 32, the circulating air can more directly change the internal gas flow path of a flow field under the action of a rectification grid 7 and the rectification baffle 2, the random movement of the atmosphere in the actual atmospheric environment is more approximate, then the wind speed in each cavity 13 is regulated through the fan 31, the temperature in each cavity 13 is regulated through a heating plate 41 and a cooling plate 42, the humidity in each cavity 13 is regulated through a split regulating valve arranged on a first branch pipe, the size of each physical quantity is accurately controlled through a temperature sensor 61, a humidity sensor 62 and a wind speed meter 63 in the adjustment process, the air flow field can be more directly changed under the action of the rectification grid 7 and the rectification baffle 2, the different humidity conditions of each cavity 13 of a box 1 are more directly measured, the different levels of the air can be simultaneously, the different air can be more completely superimposed in the air flow field, the different air conditions can be simultaneously measured, the different air conditions can be simultaneously, the different air conditions of the air flow fields are more different in the air flow fields are more different, the air conditions are different in the air conditions, the experiment conditions are different, the air conditions can be simultaneously different in the air, the air can be subjected to the experiment conditions, the different, the air can be subjected to the different to the air, the different conditions are different, and the air can be subjected to the experiment conditions are more can be subjected to the different; in the process of experiments, the liquid draining mechanism 8 arranged at the side edge of the box body 1 can collect the condensed water in the cavity 13.
The foregoing examples are merely illustrative of specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing examples, it should be understood by those skilled in the art that any modification, variation or substitution of some of the technical features described in the foregoing examples may be easily made within the scope of the present invention, and the spirit and scope of the technical embodiments of the present invention should not be limited to the modifications, variations or substitutions.