CN201461226U - Vane - Google Patents

Vane Download PDF

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Publication number
CN201461226U
CN201461226U CN 200920110731 CN200920110731U CN201461226U CN 201461226 U CN201461226 U CN 201461226U CN 200920110731 CN200920110731 CN 200920110731 CN 200920110731 U CN200920110731 U CN 200920110731U CN 201461226 U CN201461226 U CN 201461226U
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CN
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Prior art keywords
vane
conical
pit
section
rough
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CN 200920110731
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Chinese (zh)
Inventor
宋娟娟
张明明
徐建中
杨兵
黄宸武
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中国科学院工程热物理研究所
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/721Blades or rotors

Abstract

Disclosed is a vane, wherein the front edge of the vane is in a whale fin shape, and the tail edge thereof is in an owl feather serrated shape, the tangential section thereof is a rough surface, and a vortex generator is further installed on the rough tangential section. The rough tangential section of the vane could be a rib, a spherical pit, a spherical bump, a triangle conical pit, a triangle conical bump, a polygonal conical pit or a polygonal conical bump. The utility model has the effects that the lift force of the vane is increased to the largest extent within the larger attack angle range, the resistance of the vane is reduced, the efficiency is improved, and the noise is reduced.

Description

一种叶片 A blade

技术领域 FIELD

[0001] 本实用新型涉及一种叶片,尤其是一种适用于叶轮机械和风力发电机领域的叶 [0001] The present invention relates to a blade, particularly suitable for the field of machinery and the wind turbine impeller leaves

片,该叶片具有增加升力、减小阻力、提高效率、降低噪声等特点。 Sheet, the blade has an increased lift, reduce the resistance, to improve efficiency, reduce noise and other characteristics. 背景技术 Background technique

[0002] 在增升减阻方面,鲸鱼鳍被实验证实有增升减阻作用,认为鲸鱼鳍具有凹凸不平的表面,其中突起的部分有助于形成涡旋,这些涡旋以更平稳的方式给鲸鱼带来更大的动力,较大程度地增加了升力和减小了阻力,在大攻角下尤其效果明显。 [0002] in the drag lift, fin whale experimentally confirmed lift drag reduction, fin whale that has an uneven surface, wherein the protrusion portion contributes to the formation vortices that in a more stable manner whale to greater power, a greater degree of lift and increased drag is reduced, the effect is obvious in particular at high angles of attack.

[0003] 在单纯的减阻方面,因为表面摩擦阻力在运输工具的总阻力中占有很大的比例, 例如:常规的运输机和水上船只,其表面摩擦阻力约占总阻力的50%,潜艇可达70% ;飞机飞行时占其总阻力的40-50% ;长距离管道输送中,泵站的动力几乎全部用于克服表面摩擦阻力。 [0003] In simple terms of drag reduction, since the surface of the frictional resistance in a large proportion of the total resistance of the vehicle, for example: a conventional transport aircraft and marine vessels, about 50% of its total surface friction resistance, submarines 70%; 40-50% of its total drag when the aircraft; long-distance pipeline transport, the power of pumping stations to overcome substantially all friction surfaces. 所以减小表面摩擦阻力对于节能来说是一件很有意义的工作。 Therefore, to reduce skin friction drag is a very meaningful work is for saving. 已有的减阻措施有:肋条减阻、非光滑表面减阻、柔顺壁减阻、聚合物添加剂减阻、疏水涂层减阻、微气泡减阻、壁面振动减阻、涡流发生器减阻等,其中一部分已在水下航行器(水雷、潜艇)、船舶、飞行器、管道输运系统等设备中得到了应用。 Conventional drag reduction measures: rib drag reduction, non-smooth surface drag, drag reducing compliant wall, drag reducing polymer additive, a hydrophobic coating drag reduction, drag reduction micro-bubbles, the wall surface vibration drag reduction, drag reduction vortex generator etc., wherein a portion of the underwater vehicle has (mines, submarines), ships, aircraft, pipelines and other equipment in the delivery system has been applied. 相关的专利有:中国专利200610168925. 2在风力机叶片表面上设置空气动力学特征部件,包括波形和凹凸形等来改善流体流动和减小阻力;专利200680045596. 0在水平轴风力发电机叶片表面上应用凹痕或突起减小阻力;专利00134950. 3将非光滑表面应用在犁壁和饭勺上等等。 Relevant patents: Chinese patent 200610168925.2 aerodynamic features member disposed on the blade surface of the wind turbine, comprising a convex-shaped waveform and the like to improve fluid flow and reduce drag; Patent horizontal axis wind turbine blade surface 200680045596.0 application of indentations or protrusions reduce the resistance; Patent 00134950.3 non-smooth surface in applied and plow wall spoon like. 除此以外,肋条或沟槽在翼段、机翼和飞机上的减阻效果也已在文献中提及,一般在小攻角范围内有减阻效果;而涡流发生器已在飞机上得到应用,在大攻角下减阻效果可观。 In addition, ribs or grooves in the wing segment, the drag reduction and wing aircraft also been mentioned in the literature, generally drag reduction effect in a small range of angles of attack; the vortex generators have been used on aircraft applications at high angles of attack considerable drag reduction.

[0004] 在降噪方面,夜间猫头鹰的行动悄无声息,是由于羽毛的锯齿状尾缘对降噪起了作用。 [0004] In terms of noise, night owls silent action, because of serrated trailing edge of feathers noise reduction played a role. 而尾缘噪声是叶轮机械和风力发电机的主要噪声源。 While the trailing edge noise is the dominant noise source in turbomachinery and wind turbines.

[0005] 纵观以上所述,所提及的增升减阻、增效、降噪的方法均未见在叶轮机械和风力发电机上得到很好的应用,应用也仅仅是局限于对某种减阻方式的设想,比如说非光滑表面减阻和柔顺壁减阻等,很少见到在实际中有综合应用。 [0005] Throughout the above, mentioned drag lift, efficiency, noise reduction methods are no good application, used in wind turbines and turbomachinery is only limited to certain envisaged drag reduction methods, such as non-smooth surfaces such as drag reduction and drag reduction supple wall, rarely seen comprehensive application in practice.

实用新型内容 SUMMARY

[0006] 本实用新型的目的是提供一种叶片,以提高叶片的增升减阻、增效和降噪的效果。 [0006] The object of the present invention is to provide a blade, the blade in order to improve drag lift, efficiency and noise reduction effect. [0007] 为实现上述目的,本实用新型提供的叶片,其前缘呈鲸鱼鳍状,叶片的尾缘呈猫头鹰羽毛锯齿状,叶片的弦面为非光滑表面,或者是在光滑的弦面上安装有涡流发生器。 [0007] To achieve the above object, the present invention provides a blade, which was the leading edge of the fin whale, the trailing edge of the blade owl feathers were serrated surface of the blade chord non-smooth surface, or a smooth surface chord vortex generators mounted. [0008] 本实用新型还可以在非光滑表面的弦面上安装涡流发生器。 [0008] The present invention may also be mounted on the vortex generator chord face of the non-smooth surface.

[0009] 本实用新型的非光滑表面可以是:肋条、球形凹坑、球形凸起、三角锥形凹坑、三角锥形凸起、多边形锥台凹坑和多边形锥台凸起。 [0009] The present invention may be a non-smooth surface: rib, spherical dimples, ball bumps, dimples triangular pyramid, triangular pyramid projection, polygonal frustum polygonal frustum pits and projections.

[0010] 本实用新型的效果是,在较大攻角范围内,最大程度的增加了叶片的升力,减小了叶片的阻力,提高了效率和降低了噪声。 [0010] This novel effect is practically in a wide range of angles of attack, increasing the maximum lift of the blade, the blade drag is reduced, improving efficiency and reducing noise. 附图说明 BRIEF DESCRIPTION

[0011] 图1为风力发电机整机正面示意图。 [0011] FIG. 1 is a front schematic view of the whole wind turbine.

[0012] 图2是本实用新型在非光滑表面的弦面上安装涡流发生器的叶片示意图。 [0012] FIG. 2 is a schematic diagram of the present invention installed in a vortex generator chord non-smooth surface of the blade surface.

[0013] 图3是本实用新型在肋条状的弦面上安装涡流发生器的叶片示意图。 [0013] FIG. 3 is a schematic view of the vortex generator according to the present invention installed in a ribbed surface of the blade chord.

[0014] 图4是本实用新型的V形肋条的剖面放大立体示意图。 [0014] FIG. 4 is a perspective view of the present invention is an enlarged cross-sectional view of the V-shaped ribs.

[0015] 图5是本实用新型的球形凹坑的剖面放大示意图 [0015] FIG. 5 is a cross-sectional view of the invention of the present enlarged schematic spherical recesses

[0016] 图6是本实用新型的球形凸起的剖面放大示意图。 [0016] FIG. 6 of the present invention is a cross-sectional enlarged view of the spherical projection.

[0017] 图7是本实用新型的三角锥形凹坑的剖面放大示意图。 [0017] FIG. 7 is a cross-sectional view of the present invention enlarged view pyramidal pits.

[0018] 图8是本实用新型的三角锥形凸起的剖面放大示意图。 [0018] FIG. 8 of the present invention is a triangular cross-sectional enlarged view of the tapered projections.

[0019] 图9是本实用新型的多边形锥台凹坑的剖面放大示意图。 [0019] FIG. 9 is a cross-sectional view of the present invention polygonal frustum enlarged view of the pit.

[0020] 图10是本实用新型的多边形锥台凸起的剖面放大示意图。 [0020] FIG. 10 of the present invention is a polygonal frustum enlarged schematic sectional projection.

[0021] 图11是本实用新型的涡流发生器的放大示意图。 [0021] FIG. 11 is an enlarged schematic view of the present invention vortex generator.

具体实施方式 detailed description

[0022] 本实用新型联合应用增升减阻、增效、降噪的方法,在叶轮机械和风力发电机领域灵活运用这些方法的机理,最大范围地发挥出各自的特长,以起到增升减阻、提高效率、降低噪声的效果。 [0022] The present invention is combined lift drag reduction, efficiency, noise reduction method, in the field of wind turbines and turbomachinery mechanisms utilize these methods, the maximum range of the play to their strengths, to function as lifting drag reduction, improve efficiency, reduce the effect of noise.

[0023] 本实用新型在叶轮机械或风力发电机叶片上,将叶片的前缘改进为仿鲸鱼鳍的结构,尾缘改进为仿猫头鹰羽毛锯齿状,在中间弦面上单独或联合应用肋条状、非光滑表面和涡流发生器结构。 [0023] In the present invention, the turbomachinery blade or wind turbine, the blade leading edge of the fin whale improved imitation of the structure, the trailing edge to improve owl feather imitation serrated surface on the middle chord alone or in combination ribbed , the non-smooth surface structure and a vortex generator.

[0024] 当气流流入前缘,气流绕过仿鲸鱼鳍结构之后,流动加速,使气流在叶片上保持附着流动,气流被引导环绕突峰运动,在叶片吸力面形成涡漩,增强了与自由层动量的交换, 降低了负压梯度。 [0024] When the leading edge of influx of the airflow, the airflow bypasses after imitation whale fin structure, accelerating the flow, the air flow flowing in the blade to remain attached, airflow is directed around the spurt movement, vortex is formed in the suction surface of the blade, and enhance the freedom momentum exchange layer, reducing the negative pressure gradient. 在小攻角时,升力和阻力与光滑前缘无太大差别,在大攻角时,比光滑前缘有明显的升力增加、阻力减小。 In a small angle of attack, lift and drag without much difference with the smooth leading edge, while a large angle of attack, with a significant increase in lift than a smooth leading edge, resistance decreases.

[0025] 若气流流经弦面上的非光滑表面中的一种顺流向的肋条表面,因其增加了粘性底 [0025] If a non-smooth surface of the rib surface of the gas stream flowing through the chord plane along a flow direction, increases its viscosity bottom

层的厚度,减小了壁面上的平均速度梯度,肋条尖峰阻碍了由湍流运动引起的瞬时横向流 Layer thickness, reduces the average velocity gradient across the wall, the ribs impede instantaneous peak caused by the turbulent motion of the lateral flow

动的发生,使边界层内整个湍动变化减小,从而使肋条表面的摩擦阻力减小。 Moving occurs, the entire dynamic changes turbulent boundary layer is reduced, thereby reducing the frictional resistance of the surface of the rib. 在小攻角下, In the small angle of attack,

有一定的减阻效果。 There are some drag reduction. 若气流流经的是其它形式的非光滑表面,它可以改善叶片表面的流动, If the air flow through the other forms of non-smooth surface, it can improve the flow of the blade surface,

减小阻力。 Reduce drag. 涡流发生器产生涡流使主流中高动量气流和叶面边界层内低动量气流进行交换 Vortex generator generates vortices in the main stream and the high momentum leaf low momentum boundary layer airflow exchange

或平衡,从而使边界层内的气流增加了流动方向的动量,也增加了涡流附近气流湍流度,从 Or balanced, so that the air flow in the boundary layer increases the momentum of the flow direction, but also increases air flow turbulence near the vortex, from

而阻止了大的反压梯度形成的边界层分离及由表面摩擦或反压梯度造成的边界层厚度增 While preventing boundary layer separation of large counter-pressure gradient formed by the boundary layer thickness and surface friction caused by the pressure gradient or trans

长,减小了阻力。 Long, the resistance is reduced. 在大攻角下减阻尤为可观。 In the high angle of attack of drag reduction is particularly impressive. 尾缘上仿猫头鹰的锯齿状可以减小叶片尾缘 Imitation serrated edge owl tail trailing edge of the blade can be reduced

与叶片表面涡的相互作用,使噪声降低。 Blade vortex interaction with the surface, so that noise reduction. 其特殊之处在于:联合应用了增升减阻、增效、降噪 It is special because: a combined lift drag reduction, efficiency, noise reduction

的方法,分别实现多种方案,这些方案可以分别是: Method, respectively, to achieve a variety of programs which may each be:

[0026] 1)仿鲸鱼鳍前缘+非光滑表面+仿猫头鹰锯齿状尾缘; [0026] 1) the leading edge of the fin whale imitation + + non-smooth surface owl imitation serrated trailing edge;

[0027] 2)仿鲸鱼鳍前缘+涡流发生器+仿猫头鹰锯齿状尾缘; [0027] 2) the leading edge of the fin whale imitation + + vortex generator owl imitation serrated trailing edge;

[0028] 3)仿鲸鱼鳍前缘+非光滑表面+涡流发生器+仿猫头鹰锯齿状尾缘。 [0028] 3) the leading edge of the fin whale imitation non-smooth surface + + + vortex generator owl imitation serrated trailing edge.

[0029] 其中的非光滑表面可以是肋条、球形凹坑、球形凸起、三角锥形凹坑、三角锥形凸 [0029] wherein the non-smooth surfaces may be ribs, dimples spherical, ball bumps, dimples triangular pyramid, triangular pyramid projection

起、多边形锥台凹坑和多边形锥台凸起中的一种或几种。 Since, polygonal frustum polygonal frustum pits and projections of one or more. [0030] 以下结合附图,以风力发电机为实例来进行说明。 [0030] conjunction with the drawings, in the wind turbine will be explained as an example.

[0031] 如图l所示,本实用新型是用在风力发电机上的叶片4。 [0031] As shown in FIG l, the present invention is used in a wind turbine blade 4. 风力发电机由塔架l,机舱2,轮毂3和多个叶片4组成,叶片4安装在轮毂3上,当风速吹向风力发电机叶片4时, 风作用在叶片4上,将一部分风的动能转化为推动叶片4旋转的力矩,使叶片4带动轮毂3 绕机舱2的水平中心轴旋转,把风能转化为机械能,再通过机舱2中的发电机将机械能转化为电能输出。 L by the wind turbine tower, a nacelle 2, a hub 3 and 4 composed of a plurality of blades, the blade 4 is mounted on the hub 3, when the wind speed blows wind turbine blades 4, the wind acting on the blades 4, a part of the wind promote the kinetic energy into torque rotating blades 4, driven by the blades 4 of the hub 2 of the horizontal center axis of the nacelle 3 around the rotation, the wind energy into mechanical energy, and then by the generator in the nacelle 2 mechanical energy into electrical energy output.

[0032] 请结合图2和图3,本实用新型的叶片4其前缘401为仿鲸鱼鳍结构,叶片的尾缘405为仿猫头鹰锯齿状,叶片的弦面上安装有涡流发生器404。 [0032] Please FIGS. 2 and 3 in conjunction with the present invention, the leading edge of the blade 4 imitation whale fin structure 401, the trailing edge of the blade 405 owl imitation serrated mounting surface of the blade chord vortex generator 404. 本实用新型的弦面还可以是各种形状的非光滑的表面403。 The present invention may also be non-chordal plane smooth surface 403 of various shapes.

[0033] 图2所示的叶片弦面是非光滑表面,在非光滑弦面上可以设计成凹凸不平的表面403,,该非光滑表面的形状可以是:肋条状表面(如图4所示)、球形凹坑状表面(如图5所示)、球形凸起状表面(如图6所示)、三角锥形凹坑状表面(如图7所示)、三角锥形凸起状表面(如图8所示)、多边形锥台凹坑状表面(如图9所示)和多边形锥台凸起状表面(如图10所示)中的一种或几种的组合,在弦面上还安装了涡流发生器404。 [0033] surface of the blade chord non-smooth surface shown in Figure 2, the non-smooth surface of the string may be designed to surface irregularities 403 ,, the shape of the non-smooth surface may be: ribbed surface (FIG. 4) , dimple-shaped spherical surface (5), the spherical surface of the convex shape (FIG. 6), triangular-shaped tapered surface pits (7), a triangular pyramid-shaped surface protrusions ( FIG combination of one or more), a polygonal frustum-shaped surface depressions (9) and the surface of the polygonal frustum shaped protrusions (FIG. 10) as shown in 8, chord surfaces vortex generator 404 also installed. [0034] 图3是本实用新型的非光滑表面设计成单一的肋条状402的示意图,该肋条状402 是顺流向设置。 [0034] FIG. 3 of the present invention is a non-smooth surface designed to form a single schematic rib 402, the rib 402 is shaped streamwise set. 涡流发生器404的形状如图11所示,固定在弦面上。 The shape of the vortex generator 404 shown in FIG. 11, fixed to the surface of the string.

[0035] 风流经叶片4时,是从叶片前缘401流入,然后流经非光滑表面403,或者涡流发生器404往后缘发展,最后经过仿猫头鹰锯齿状尾缘405,流出叶片。 [0035] The wind flow over the blades 4, that flow from the blade leading edge 401, then flows through the non-smooth surface 403, 404 or the back edge of the vortex generator development, and finally through imitation owl serrated trailing edge 405, blade outflow. 经此过程后将达到增升减阻、提高效率、 低噪声的效果。 After this process will achieve lift drag reduction effect of improving the efficiency and low noise.

Claims (3)

  1. 一种叶片,其特征在于,该叶片的前缘呈鲸鱼鳍状,叶片的尾缘呈猫头鹰羽毛锯齿状,叶片的弦面为非光滑表面;或在弦面的光滑表面上安装有涡流发生器。 A blade, wherein the leading edge of the blade as a fin whale, the trailing edge of the blade owl feathers were serrated, non-smooth surface of the blade chord surface; or vortex generators mounted on the smooth surface of the chordal plane .
  2. 2. 如权利要求1所述的叶片,其特征在于,所述非光滑表面上安装有涡流发生器。 The blade as claimed in claim 1, wherein said non-smooth vortex generators mounted on the surface.
  3. 3. 如权利要求1或2所述的叶片,其特征在于,非光滑表面为肋条、球形凹坑、球形凸起、三角锥形凹坑、三角锥形凸起、多边形锥台凹坑和多边形锥台凸起状。 3. The blade of claim 1 or claim 2, wherein the non-smooth surface of the ribs, dimples spherical, ball bumps, dimples triangular pyramid, triangular pyramid projection, polygonal frustum polygonal pits and frustum shaped protrusions.
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CN102673758A (en) * 2012-05-15 2012-09-19 哈尔滨工程大学 Propeller with convex and concave guide edge
CN102966487A (en) * 2012-11-28 2013-03-13 苏州源源机械设备有限公司 Noise-reduction fan blade for horizontal-shaft wind driven generator
CN104603457A (en) * 2013-05-28 2015-05-06 泰拉尔株式会社 Rotor
CN104833443A (en) * 2013-10-15 2015-08-12 罗斯蒙特航天公司 Total air temperature sensor
CN104948387A (en) * 2015-07-01 2015-09-30 江苏新誉重工科技有限公司 Double-impeller wind power generator set and wind energy capturing method thereof
EP2933475A1 (en) * 2014-04-14 2015-10-21 Siemens Aktiengesellschaft Vortex generators aligned with trailing edge features on wind turbine blade
CN105275740A (en) * 2014-07-16 2016-01-27 远景能源(江苏)有限公司 Vortex generator unit for a wind turbine blade
CN105298924A (en) * 2015-10-23 2016-02-03 上海交通大学 Gas compressor bionic fixed blade based on humpback flipper and implementation method of gas compressor bionic fixed blade
CN105992870A (en) * 2013-12-20 2016-10-05 Lm Wp 专利控股有限公司 A wind turbine blade having deployable aerodynamic devices
CN106285901A (en) * 2016-11-08 2017-01-04 吉林大学 Radiating fan for vehicle engine developed on basis of owl wing feather

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CN102673758B (en) * 2012-05-15 2015-06-17 哈尔滨工程大学 Propeller with convex and concave guide edge
CN102966487A (en) * 2012-11-28 2013-03-13 苏州源源机械设备有限公司 Noise-reduction fan blade for horizontal-shaft wind driven generator
CN104603457A (en) * 2013-05-28 2015-05-06 泰拉尔株式会社 Rotor
CN104603457B (en) * 2013-05-28 2018-02-27 泰拉尔株式会社 Rotor
US9938957B2 (en) 2013-05-28 2018-04-10 Teral Inc. Rotor
CN104833443A (en) * 2013-10-15 2015-08-12 罗斯蒙特航天公司 Total air temperature sensor
CN105992870A (en) * 2013-12-20 2016-10-05 Lm Wp 专利控股有限公司 A wind turbine blade having deployable aerodynamic devices
EP2933475A1 (en) * 2014-04-14 2015-10-21 Siemens Aktiengesellschaft Vortex generators aligned with trailing edge features on wind turbine blade
US9476406B2 (en) 2014-04-14 2016-10-25 Siemens Aktiengesellschaft Vortex generators aligned with trailing edge features on wind turbine blade
CN105275740A (en) * 2014-07-16 2016-01-27 远景能源(江苏)有限公司 Vortex generator unit for a wind turbine blade
CN104948387A (en) * 2015-07-01 2015-09-30 江苏新誉重工科技有限公司 Double-impeller wind power generator set and wind energy capturing method thereof
CN105298924B (en) * 2015-10-23 2017-09-15 上海交通大学 Based humpback flipper compressor vanes and bionic implementation method
CN105298924A (en) * 2015-10-23 2016-02-03 上海交通大学 Gas compressor bionic fixed blade based on humpback flipper and implementation method of gas compressor bionic fixed blade
CN106285901A (en) * 2016-11-08 2017-01-04 吉林大学 Radiating fan for vehicle engine developed on basis of owl wing feather

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