CN212032422U - Fluid viscosity force influence simulation demonstration device - Google Patents
Fluid viscosity force influence simulation demonstration device Download PDFInfo
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- CN212032422U CN212032422U CN202021007119.9U CN202021007119U CN212032422U CN 212032422 U CN212032422 U CN 212032422U CN 202021007119 U CN202021007119 U CN 202021007119U CN 212032422 U CN212032422 U CN 212032422U
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Abstract
The utility model discloses a fluid viscous force influence simulation presentation device, include: the transparent container is filled with liquid with the same volume, at least one light sphere and at least one heavy sphere, all the light spheres and the heavy spheres respectively correspond to one transparent container, the volumes of the light spheres and the heavy spheres are the same, and the equivalent densities of the light spheres and the heavy spheres are both greater than the density of the liquid. The device can be used for simulating and demonstrating the same or different spheres, well demonstrates the important physical concept of fluid viscosity and the most important factor influencing the fluid viscosity, namely temperature by observing the falling condition of the spheres under the falling condition of the same or different liquids at the same or different temperatures, and combines theory and practice to improve the teaching effect. The simulation demonstration device can well simulate the influence of temperature on fluid viscosity, and has the advantages of convenient observation, low cost, good portability, simple and easy experimental operation and capability of well meeting teaching requirements.
Description
Technical Field
The utility model belongs to the fluid mechanics teaching field relates to the important means of fluid mechanics teaching research-simulation demonstration, concretely relates to experimental apparatus for fluid viscous force influence simulation demonstration.
Background
The simulation demonstration is an important means for enhancing the intuitive and perceptual knowledge of the trainees and improving the teaching effect. The simulation demonstration is to vividly demonstrate some real objects, the fluid viscosity is an abstract concept, the theoretical explanation and statement cannot enable students and students to establish a clear knowledge frame, the simulation demonstration can combine important concepts and definitions with classroom teaching instant teaching, and the students can establish a rational cognition system in mind through the simulation demonstration observation of the physical concepts. Every theoretical breakthrough in the fluid mechanics development process and its application in engineering are almost started from the demonstration and observation of the flow phenomenon. For example, the reynolds transition experiment in 1880, the mach shock wave phenomenon experiment in 1888, the concept of the boundary layer proposed in prandtl in 1904, the von karman analysis on the circular vortex street of the cylinder in 1912 and the like are not based on demonstration. The viscosity of the fluid is the root cause of frictional resistance generated when the airplane moves, and the temperature is the most important factor influencing the viscosity of the fluid, but the simple discussion and formula derivation are not beneficial to beginners and students with weak basic theories to understand the physical concepts, and the intuitive understanding of the physical concepts is difficult.
Therefore, how to design the viscous force simulation device which is feasible, simple, convenient and easy to use, and good in demonstration effect and method has important significance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fluid stickness power simulation presentation device, this experimental apparatus not only are applicable to the classroom demonstration teaching, also have the reference moreover to science popularization teaching etc., reference practical value.
In order to solve traditional classroom teaching, fluid viscous force physics concept is important, but explains the problem that the effect is not good again, the utility model provides a fluid viscous force influences simulation presentation device, the device includes: at least two identical transparent containers, each transparent container containing the same volume of liquid; the device comprises at least one light sphere and at least one heavy sphere, wherein all the light spheres and the heavy spheres respectively correspond to a transparent container, and each container is only put in one sphere during simulation demonstration so as to prevent the spheres from moving to generate interference when put in the containers; the volume of the light spheres is the same as that of the heavy spheres; the equivalent density of the light spheres is less than that of the heavy spheres, and the equivalent densities of the light spheres and the heavy spheres are both greater than that of the liquid, wherein the equivalent density refers to the quotient of the mass and the volume of the spheres, and for the homogeneous spheres, the equivalent density is the same as the material density, and for the hollow spheres, the equivalent density is lower than the material density. The transparent containers are filled with the same liquid, and the volumes of the spheres are the same, so that the buoyancy influence of the liquid can be ensured to be the same. The equivalent density of the light ball is greater than that of the liquid, so that the light ball can fall in the liquid instead of floating or suspending, and the falling speed is not too high. The light spheres weigh less than the heavy spheres.
Preferably, the device further comprises a heating device. The temperature of the liquid in a certain transparent container can be changed by heating the heating device, and the viscosity of the liquid can be further changed.
Preferably, the transparent container is provided with a sealing cover, so that the transparent container is convenient to carry, liquid is prevented from being poured in each experiment, and the liquid is poured out after the experiment.
Preferably, the transparent container is made of acrylic materials. For glass material, acrylic material is not fragile.
Preferably, the transparent container is provided with a scale. Through the scales, the falling speed of the light ball body and/or the heavy ball body can be calculated, and then the viscosity force can be calculated according to a related theoretical formula, so that the classroom knowledge can be further expanded, and the teaching effect can be further strengthened.
Preferably, the liquid is castor oil. The temperature has a great influence on the viscosity of the castor oil during heating, and the castor oil is semitransparent, so that the movement of the ball in the castor oil can be observed conveniently.
Preferably, when the material density of the light ball is greatly different from the density of the liquid, the light ball is a hollow ball. When the hollow structure is adopted, the equivalent density of the ball body is reduced, so that the equivalent density of the light ball body is not greatly different from the density of the liquid contained in the transparent container. If the difference between the equivalent density of the light ball and the density of the liquid is too large, the falling speed of the ball in the liquid is high, and the ball is inconvenient to observe.
Preferably, the light ball body is a hollow aluminum ball, and the heavy ball body is a hollow iron ball. The ball body is made of aluminum and iron which are commonly used materials, so that the ball body is convenient to manufacture and take.
Preferably, the liquid of different stickies can be splendid attire in the transparent container of difference to observe the whereabouts condition of the same spheroid/different spheroid in different stickies liquid, under this condition, in order to guarantee that the spheroid can the homoenergetic fall in all liquids, should make the density of the liquid of different stickies all want to be less than the equivalent density of light spheroid.
Preferably, the number of transparent containers is 3, the number of light spheres is 2, and the heating device acts on one of the transparent containers in which the light spheres are placed. When each transparent container is filled with the same liquid, and the number of the light spheres is 2, the liquid in one transparent container in which the light spheres are placed can be heated, so that the temperature of the liquid can be changed, the falling conditions of the same spheres in the same liquid at different temperatures can be observed, and the influence of the temperature on viscosity can be further known.
The utility model discloses a fluid viscous force simulation presentation device can be used to simulate demonstration comparison the same/different spheroid, under the same/different temperature, under the whereabouts circumstances in the same/different liquid, through observing the spheroidal whereabouts circumstances, this important physical concept of demonstration fluid viscous force that can be fine and the most important factor-the temperature that influences fluid viscous force can help the student to understand, master relevant important concept, can combine together theory and practice, promote the effect of giving lessons. The simulation demonstration device can well simulate the influence of temperature on fluid viscosity, is convenient to observe, low in cost, simple and easy to operate in experiment, good in portability, capable of well meeting teaching requirements, small in originality and large in application.
Drawings
Fig. 1 is a schematic composition diagram of a simulation demonstration device for temperature influence on fluid viscosity.
Detailed Description
The following describes the embodiments of the present invention with reference to the drawings.
Example 1
A fluid viscosity force influence simulation demonstration device is shown in figure 1 and comprises the following components: three identical transparent containers 1 are provided, each transparent container 1 is filled with the same volume of liquid 2, two light spheres 3 and one heavy sphere 4, and all the light spheres 3 and the heavy spheres 4 respectively correspond to one transparent container 1; the light spheres 3 and the heavy spheres 4 have the same volume, and the equivalent densities of the light spheres 3 and the heavy spheres 4 are both greater than the density of the liquid 2. Wherein, transparent container 1 specifically is ya keli material, and liquid 2 specifically is castor oil, and light spheroid 3 is hollow aluminum ball, and heavy spheroid 4 is hollow iron ball, still includes heating device 5 in the device, as shown in figure 1, heating device 5 acts on one of them transparent container 1, and this transparent container is corresponding to a light spheroid 3.
To better illustrate the composition of the analog presentation device, the following description is provided for its method of use.
During the simulation demonstration, can put into the castor oil of respectively corresponding transparent container 1 with 1 hollow aluminum ball and 1 hollow iron ball simultaneously, in this simulation demonstration, hollow aluminum ball corresponds is the transparent container on the left of figure 1, and hollow iron ball corresponds is the transparent container on the right of figure 1. Since the hollow aluminum balls are lighter in weight than the hollow iron balls, it is observed that the falling speed of the hollow iron balls is greater than that of the hollow aluminum balls. The simulation demonstrates the falling condition of different spheres in the same liquid at the same temperature.
During simulation demonstration, 1 hollow aluminum ball and 1 hollow iron ball can be further simultaneously placed into the castor oil of the transparent container 1 corresponding to each hollow aluminum ball and 1 hollow iron ball, in the simulation demonstration, the hollow aluminum ball corresponds to the transparent container in the middle of the figure 1, and the hollow iron ball corresponds to the transparent container on the right side of the figure 1. Through heating device 5 heating the transparent container in the middle of, change the temperature of splendid attire castor oil in the transparent container, along with the rising of temperature, the falling speed difference of hollow aluminium ball and hollow iron ball can be littleer and littleer, after heating to the uniform temperature, the falling speed that hollow aluminium ball can be the same with hollow iron ball to can simulate the demonstration temperature and show the influence of fluid viscosity power. The simulation demonstration shows the falling conditions of different spheres in the same liquid at different temperatures.
During the simulation demonstration, still can further put into the castor oil of respective transparent container 1 with 2 hollow aluminum balls simultaneously, in this simulation demonstration, 2 hollow aluminum balls correspond respectively to be the transparent container in the left side of figure 1 and middle. When the heating device 5 is not used, the falling speed of the two hollow aluminum balls in the castor oil is the same. The simulation demonstrates the falling of the same sphere in the same liquid at the same temperature.
During the simulation demonstration, still can further put into the castor oil of respective transparent container 1 with 2 hollow aluminum balls simultaneously, in this simulation demonstration, 2 hollow aluminum balls correspond respectively to be the transparent container in the left side of figure 1 and middle. As shown in fig. 1, when the heating device 5 is used to heat the middle transparent container, the falling speed of the two hollow aluminum balls in the castor oil is no longer the same, and the falling speed of the hollow aluminum balls placed in the middle transparent container is faster, so that the influence of temperature on fluid viscosity can be simulated and demonstrated. The simulation demonstrates the falling condition of the same sphere in the same liquid at different temperatures.
Example 2
The structure of the simulation demonstration device for the influence of the fluid viscosity force in the embodiment is basically the same as that in the embodiment 1, and the main difference is as follows: the transparent container 1 is provided with a sealing cover, and the transparent container 1 is provided with scales.
Except for qualitative simulation demonstration by adopting the method in the embodiment 1, the falling speed of the light ball and/or the heavy ball can be further calculated through scales, and then the viscosity force is calculated according to a relevant theoretical formula for quantitative analysis, so that the classroom knowledge can be further expanded and the teaching effect can be further consolidated.
In addition, through set up sealed lid on transparent container 1, on the one hand be convenient for carry, on the other hand avoids pouring into liquid when experimental at every turn, pours out liquid after the experiment again.
Example 3
The structure of the simulation demonstration device for the influence of the fluid viscosity force in the embodiment is basically the same as that in the embodiment 1, and the main difference is as follows: the device comprises four identical transparent containers 1, wherein two transparent containers 1 are filled with water, and the other two transparent containers 1 are filled with castor oil; the transparent container 1 is made of glass; the light ball 3 is made of acrylic; two heavy spheres 4, the material of heavy sphere 4 is bakelite.
During the simulation demonstration, take a transparent container of dress water, take a transparent container of dress castor oil again, then put into the liquid of above-mentioned two containers respectively with the light spheroid 3 of two ya keli materials or with the heavy spheroid 4 of two bakelite materials simultaneously, can observe spheroidal falling speed. The simulation demonstration shows the falling conditions of the same sphere in different liquids at the same temperature.
During the simulation demonstration, still can take a transparent container of dress water, again take a transparent container of dress castor oil, then put into the liquid of above-mentioned two containers respectively with the light spheroid 3 of an ya keli material and the heavy spheroid 4 of a bakelite material simultaneously, and then observe spheroidal falling speed. The simulation demonstration shows the falling conditions of different spheres in different liquids at the same temperature.
Example 4
The structure of the simulation demonstration device for the influence of fluid viscosity force in the embodiment is basically the same as that in the embodiment 3, and the main difference is as follows: the device also comprises a heating device 5; the transparent containers 1 are each provided with a sealing cover.
During the simulation demonstration, get a transparent container of dress water, get a transparent container of dress castor oil again, then heat the transparent container of dress castor oil through heating device 5, change the temperature of splendid attire castor oil in the transparent container, put into the liquid of above-mentioned two containers respectively simultaneously with the light spheroid 3 of two ya keli materials or the heavy matter spheroid 4 of two bakelite materials again, can observe spheroidal falling speed. Along with the rising of temperature, the falling speed difference of spheroid in aqueous and its falling speed in castor oil can be littleer and more, after heating to the certain temperature, the falling speed of the two can be the same, even the speed is anti-surpassing to can simulate the demonstration temperature to the influence of fluid viscosity power. The simulation demonstration shows the falling conditions of the same sphere in different liquids at different temperatures.
During the simulation demonstration, can also get a transparent container of dress water, get a transparent container of dress castor oil again, then heat the transparent container of dress castor oil through heating device 5, change the temperature of splendid attire castor oil in the transparent container, put into the liquid of two above-mentioned containers respectively simultaneously with the light spheroid 3 of an ya keli material and the heavy matter spheroid 4 of a bakelite material again, can observe spheroidal falling speed. And the influence of the temperature on the fluid viscosity can be observed through the adjustment of the temperature. The simulation demonstration shows the falling conditions of different spheres in different liquids at different temperatures.
Example 5
A fluid viscosity force influence simulation demonstration device is basically the same as the structure of the embodiment 1, and the main difference is that: the number of the transparent containers 1 is two, and the number of the light spheres 3 is 1.
The structure of the implementation is simpler, and the number of the transparent containers and the number of the spheres are 2; the heating device 5 is an optional device, and when the heating device 5 is selected, the heating device can act on the corresponding container of the light ball 3.
But in the simulation demonstration, when the heating device is not used, the falling condition of different spheres in the same liquid at the same temperature can be simulated and demonstrated.
When a heating device is selected, the falling conditions of different spheres in the same liquid at different temperatures can be simulated and demonstrated.
Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the present invention may be modified in various ways. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A fluid viscous force influence simulation demonstration apparatus comprising: the device comprises at least two identical transparent containers (1), wherein each transparent container (1) is filled with liquid (2) with the same volume, at least one light sphere (3) and at least one heavy sphere (4), all the light spheres (3) and the heavy spheres (4) correspond to one transparent container (1) respectively, the volumes of the light spheres (3) and the heavy spheres (4) are identical, and the equivalent densities of the light spheres (3) and the heavy spheres (4) are all greater than the density of the liquid (2).
2. A fluid viscous force influence simulation demonstration apparatus according to claim 1, further comprising heating means (5) for raising the temperature of the liquid (2).
3. A viscous force influence simulation demonstration device for a fluid according to claim 1 or 2, wherein the transparent container (1) is provided with a sealing lid.
4. A fluid viscous force influence simulation demonstration device according to claim 1 or 2, wherein the transparent container (1) is made of acrylic material.
5. A fluid viscous force influence simulation demonstration device according to claim 1 or 2, wherein the transparent container (1) is provided with a scale.
6. A fluid viscous force influence simulation demonstration device according to claim 1 or 2, wherein the liquid (2) is castor oil.
7. A fluid viscosity force influence simulation demonstration device according to claim 1 or 2, wherein when the material density of the light ball body (3) is different from the density of the liquid (2), the light ball body (3) is a hollow ball body.
8. A fluid viscosity force influence simulation demonstration device according to claim 1 or 2 wherein the light spheres (3) are hollow aluminum spheres and the heavy spheres (4) are hollow iron spheres.
9. A fluid viscous force influence simulation demonstration apparatus according to claim 1, wherein liquids (2) of different viscosities are contained in the transparent container (1).
10. A fluid viscosity force influence simulation demonstration device according to claim 2, wherein the number of the transparent containers (1) is 3, the number of the light balls (3) is 2, and the heating means (5) acts on one of the transparent containers (1) in which the light balls (3) are placed.
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| CN202021007119.9U CN212032422U (en) | 2020-06-04 | 2020-06-04 | Fluid viscosity force influence simulation demonstration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20220120651A1 (en) * | 2020-10-21 | 2022-04-21 | Saudi Arabian Oil Company | Stokes-based method to estimate gelation time |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220120651A1 (en) * | 2020-10-21 | 2022-04-21 | Saudi Arabian Oil Company | Stokes-based method to estimate gelation time |
| US11774338B2 (en) * | 2020-10-21 | 2023-10-03 | Saudi Arabian Oil Company | Stokes-based method to estimate gelation time |
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