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1.
李樑 《山东体育学院学报》2002,18(4):35-36
依据流体力学和空气动力学原理，利用水洞实验对不同外形箭在不同攻角之下的流体力学特性进行了研究，提出了不同材料和外形箭在空气中飞行保持其稳定性的最佳初始飞行条件。 相似文献
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郭泰 《中国体育(中英文版)》2009,(5):128-129
或许有人会说，中国赛车的顶峰是F1。那里有最刺激的比赛、最完美的运作以及最大的号召力和影响力。的确，F1的进入，直接刺激了中国赛车的快速发展。但作为一个舶来品，F1始终有着中国的技术实力和经济基础无法跨越的鸿沟，中国赛车更需要的是循序渐进。 相似文献
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风靡全球的1994年度一级方程式(F—1)赛车大奖赛的总冠军被25岁的新科状元德国车手米切尔·舒马赫夺得,他成为F—1赛车史上最年轻的世界冠军,也是F—1比赛史上第一个登上世界冠军宝座的德国车手。行家们纷纷评论:F—1车坛将进入“舒马赫时代”。 车王出道 舒马赫1969年1月3日出生于德国西部小镇克尔彭。他从小就特别喜欢学赛车,对此很有天赋。他父亲罗尔夫是位制砖师傅,为了培养儿子对赛车的兴趣,专为他买了一辆 相似文献
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《武汉体育学院学报》1999,(2)
韩久瑞,男,教授,194O年Ic月出生,辽宁省沈阳市人,中国共产党员。1965年毕业于中国人民解放军军事工程学院空气动力学专业,曾在华中理工大学、武汉交通科技大学任教,现在武汉体育学院体育科学研究所任副所长以及教学与科研工作。韩久瑞教授以扎实、宽厚的基础理论知识,且具有多年从事科研与训练相结合的实践经验,因而在教学和培养人才方面具有独到之处,已经指导了多名硕士生,并与武汉交通科技大学共同培养两名博士生。讲授过：机翼理论、风帆空气动力学、划船动力学、桨叶动力学、滑水和秩泳动力学、空气动力学及流体力学等课程… 相似文献
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战车呼啸,风驰电掣。’96一级方程式(简称F—1)世界锦标赛自3月10日在墨尔本开战后,战局正在向纵深发展。亿万车迷对各路车王关注的同时,对赛车无疑会产生莫大兴趣。这种造型独特的赛车时速可达350公里,堪称陆地火箭。这种独特的赛车在构造上有哪些奥秘呢? 底盘是F—1赛车的主要结构。它有一个燃料箱, 相似文献
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如果,要举出一个可以与奥运会、世界杯相提并论的赛事,那么,很多人的回答一定会是F1。F1的速度是所有热爱汽车运动的人最美丽的梦想,F1的车手是所有迷恋汽车运动的人最崇拜的偶像。没有了F1,赛车只是街头巷尾的无聊追逐。正是F1,法拉利的红色开始光芒四射;也正是F1,舒马赫为之声名远播;同样因为F1,赛车成为了创造数十亿美元利润的世界第一运动;当然,更是F1,世界汽车工业因此改变。 相似文献
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《F1速报》是目前我国最有影响力的赛车运动专业杂志,文章对《F1速报》关于F1中国大奖赛的专题报道进行研究。结果表明,《F1速报》从创刊至今的7年多时间当中,对F1中国大奖赛的报道无论是从报道力度、报道规模、报道内容的广度和深度,以及报道的后续影响力方面,都有了长足的进步。以《F1速报》为代表的赛车类专业体育媒体的迅速发展,对F1运动在中国的推广起到了巨大的推动作用。 相似文献
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F1中国大奖赛在我国的消费需求及其对地区经济影响的调查研究 总被引：1，自引：0，他引：1
陈锡尧 《武汉体育学院学报》2005,39(8):17-20
就F1赛车对上海及其周边地区的影响作用,通过新秦网对全国范围内18岁以上的4 939人进行了问卷调查。调查结果表明,虽然人们对于赛车文化的理解尚未深入,但是,赛车运动在中国的发展还是很有潜力的。研究认为,F1上海站赛事将会促进上海及其周边地区消费水平的提高,对促进上海及其周边地区的区域经济发展具有巨大的影响作用。 相似文献
11.
Paul Mannion Yasin Toparlar Bert Blocken Magdalena Hajdukiewicz Thomas Andrianne Eoghan Clifford 《Sports Engineering》2018,21(2):123-135
Tandem cycling enables visually impaired athletes to compete in cycling in the Paralympics. Tandem aerodynamics can be analysed by track measurements, wind-tunnel experiments and numerical simulations with computational fluid dynamics (CFD). However, the proximity of the pilot (front) and the stoker (rear) and the associated strong aerodynamic interactions between both athletes present substantial challenges for CFD simulations, the results of which can be very sensitive to computational parameters such as grid topology and turbulence model. To the best of our knowledge, this paper presents the first CFD and wind-tunnel investigation on tandem cycling aerodynamics. The study analyses the influence of the CFD grid topology and the turbulence model on the aerodynamic forces on pilot and stoker and compares the results with wind-tunnel measurements. It is shown that certain combinations of grid topology and turbulence model give trends that are opposite to those shown by other combinations. Indeed, some combinations provide counter-intuitive drag outcomes with the stoker experiencing a drag force up to 28% greater than the pilot. Furthermore, the application of a blockage correction for two athlete bodies in close proximity is investigated. Based on a large number of CFD simulations and validation with wind-tunnel measurements, this paper provides guidelines for the accurate CFD simulation of tandem aerodynamics. 相似文献
12.
Dimitri Nicolopoulos Eric Berton Guillaume Gouvernet André Jacques 《Sports Engineering》2009,11(4):177-185
A method aimed at the development of an America’s Cup racing yacht bulb is developed and validated against experimental data.
The method relies heavily on Reynolds Averaged Navier Stokes computational fluid dynamics (CFD) and also factors in gravitational
and aerodynamics effects through the use of a Velocity Prediction Program. Initial extensive use of towing tank results is
made to be able to validate the CFD solution and thus develop a solid ground for predictive work. Then, in order to narrow
down the focus on bulb developments, decoupled hypotheses are made on the influence of the hull and free surface wave. The
development of a detailed performance analysis chart of a known base bulb allows the use of a relatively small series of CFD
simulations together with physical hypotheses to assess any given bulb performance relative to the known base. The discussion
of the results on a specific development highlights the promises and limitations of the method; final full scale results are
discussed and analysed as well. 相似文献
13.
The understanding and development of cycling aerodynamics 总被引：1，自引：1，他引：0
In elite cycling the resistive force is dominated by aerodynamics. Be it on the roads or in the velodrome, the sport has many
examples where aerodynamics has won and lost races. Since the invention of the bicycle, engineers have strived to improve
performance, often by reducing aerodynamic drag. Over the last 50 years a number of authors have presented their efforts in
journals, books and magazines. This review summarises the publications that show the continued development in the aerodynamics
of cycling. The review concludes by examining the shortcomings of the current understanding and making suggestions for future
research and development. 相似文献
14.
Badminton synthetic shuttlecocks are known to have significantly different aerodynamic behaviours compared to feathered shuttlecocks due to the difference in designs and use of materials. Given the fragility of avian feathers used for feathered shuttlecocks and the constantly increasing cost of purchase, the interest to assess the current synthetic shuttlecock design as a feasible alternative has re-emerged. The single-piece injection-moulded synthetic shuttlecock has been the mainstream design for the past 50 years; however, little evidence has supported that the design mimics the aerodynamics of feathered shuttlecocks. Recently, a two-part skirt design has emerged proclaiming to have surpassed its synthetic predecessor in regard to matching the aerodynamics of feathered shuttlecocks. In the current study, two different synthetic designs (injection-moulded vs two-part skirt) were benchmarked against a feathered shuttlecock. A wind tunnel test was conducted between 30 and 145 km/h. The drag coefficients of both synthetic shuttlecocks were similar to the feathered shuttlecock up to 105 km/h. Thereafter, the drag coefficient of the injection-moulded design dropped from 0.62 to 0.5 and showing no signs of levelling at speeds over 105 km/h, while the coefficient for two-part skirt design stabilised at approximately 0.55. It was concluded that the two-part skirt design better mimicked the aerodynamics of the feathered shuttlecock. 相似文献
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Aerodynamics has such a profound impact on cycling performance at the elite level that it has infiltrated almost every aspect of the sport from riding position and styles, equipment design and selection, race tactics and training regimes, governing rules and regulations to even the design of new velodromes. This paper presents a review of the aspects of aerodynamics that are critical to understanding flows around cyclists under racing conditions, and the methods used to evaluate and improve aerodynamic performance at the elite level. The fundamental flow physics of bluff body aerodynamics and the mechanisms by which the aerodynamic forces are imparted on cyclists are described. Both experimental and numerical techniques used to investigate cycling aerodynamic performance and the constraints on implementing aerodynamic saving measures at the elite level are also discussed. The review reveals that the nature of cycling flow fields are complex and multi-faceted as a result of the highly three-dimensional and variable geometry of the human form, the unsteady racing environment flow field, and the non-linear interactions that are inherent to all cycling flows. Current findings in this field have and will continue to evolve the sport of elite cycling while also posing a multitude of potentially fruitful areas of research for further gains in cycling performance. 相似文献
16.
采用文献资料法收集有关统计数据，运用运动生物力学、空气动力学原理，对标枪出手瞬间态势进行了定量和定性分析，系统地阐述了诸多力学因子对成绩的影响以及它们之间的相互关系，对运动训练实践起到指导作用。笔者试通过文献资料法结合统计学、生物力学和空气动力学等知识对标枪出手瞬间态势的力学因子进行较系统全面的综合分析。以进一步提高人们对标枪项目的认识，以更好地指导运动训练的实践。 相似文献
17.
铁饼飞行中的空气动力学原理与关键技术分析 总被引：2，自引：0，他引：2
雷鸣 《沈阳体育学院学报》2003,(2):99-100
铁饼投掷的运动成绩是由运动员的身体素质、专项技术能力和铁饼在空中飞行时空气动力等因素所决定的。将空气动力学的基础知识应用到投掷铁饼出手动作“控饼”技术的教学与训练中 ,从而获得理想的出手初速度、适宜的出手角度和铁饼飞行中的合理倾角 ,以达到提高教学与训练质量和运动技术水平的目的。 相似文献
18.
Aerodynamic drag in cycling: methods of assessment 总被引：1，自引：0，他引：1
Debraux P Grappe F Manolova AV Bertucci W 《Sports biomechanics / International Society of Biomechanics in Sports》2011,10(3):197-218
When cycling on level ground at a speed greater than 14 m/s, aerodynamic drag is the most important resistive force. About 90% of the total mechanical power output is necessary to overcome it. Aerodynamic drag is mainly affected by the effective frontal area which is the product of the projected frontal area and the coefficient of drag. The effective frontal area represents the position of the cyclist on the bicycle and the aerodynamics of the cyclist-bicycle system in this position. In order to optimise performance, estimation of these parameters is necessary. The aim of this study is to describe and comment on the methods used during the last 30 years for the evaluation of the effective frontal area and the projected frontal area in cycling, in both laboratory and actual conditions. Most of the field methods are not expensive and can be realised with few materials, providing valid results in comparison with the reference method in aerodynamics, the wind tunnel. Finally, knowledge of these parameters can be useful in practice or to create theoretical models of cycling performance. 相似文献
19.
Pierre Debraux Frederic Grappe Aneliya V. Manolova William Bertucci 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(3):197-218
When cycling on level ground at a speed greater than 14 m/s, aerodynamic drag is the most important resistive force. About 90% of the total mechanical power output is necessary to overcome it. Aerodynamic drag is mainly affected by the effective frontal area which is the product of the projected frontal area and the coefficient of drag. The effective frontal area represents the position of the cyclist on the bicycle and the aerodynamics of the cyclist-bicycle system in this position. In order to optimise performance, estimation of these parameters is necessary. The aim of this study is to describe and comment on the methods used during the last 30 years for the evaluation of the effective frontal area and the projected frontal area in cycling, in both laboratory and actual conditions. Most of the field methods are not expensive and can be realised with few materials, providing valid results in comparison with the reference method in aerodynamics, the wind tunnel. Finally, knowledge of these parameters can be useful in practice or to create theoretical models of cycling performance. 相似文献
20.
Sherrill H Hayes 《Cardiopulmonary Physical Therapy Journal》2010,21(2):22-28
Historically, invited lecturers have often challenged us to define excel lence in physical therapy practice, or in our academic programs. While some have addressed different char acteristics of excellence, our profession has not really come together to address 2 very important questions: what does “quality” mean in physical therapist education? And how do we measure it? Using 3 elements of Friendship, Leadership, and Mentoring, and Defining Excellence and juxtaposing these with Linda Crane and her life, a vision of excellence in physical therapy educational programs was explored in this invited lecture. The text of that lecture ensues.Open in a separate windowGood afternoon everyone. I would first like to thank Dr. Frese, and the Awards Committee of the Cardiovascular and Pulmonary Section for selecting me for this great honor. I would also like to thank Drs. Meryl Cohen and Carol Davis (both previous Linda Crane Lecturers) for nominating me, making me the third person from the University of Miami, on the 10th anniversary of this Lecture.I would also like to assure the cardiopulmonary physical therapists in the audience that while I teach neuroanatomy, I am really an acute care person at heart. I learned a lot from two very notable cardiopulmonary people—(1) The first person was while at Columbia Presbyterian Medical Center in New York City as a new graduate in 1970. We could work overtime on weekends doing chest physical therapy, but we all had to be trained first by the superb pulmonary physical therapist, Micah Rie; and (2) later at Hartford Hospital (in CT) in 1977, where I first met Linda Crane. Thus, I feel I have probably learned from two of the very best.I also have something to share with this audience. We are all familiar with the bumper stickers that say “I Love NY,” or something similar, with the red heart in the middle. The University of Miami is often called simply “the U.” Well, one of my students came to class with this t-shirt (see Figure Figure1).1). Linda would have loved it!Open in a separate windowFigure 1“I Heart U(M).”When trying to decide what to speak about today, I tossed around many ideas. But I realized that I knew Linda most as a teacher. I found this poem that really captured so much of Linda as a teacher:
Teaching is a Lifelong Journey – Donna Bulgur1To teach is to touch the lives of manyand to help us learn life''s lessons.But to teach well is to make a differencein all the lives you touch.
To teach is to be a parent, nurse, friend, and confidant;
to be a supporter, a leader, and a motivator.But to teach well is to be all of these things,yet not lose sight of who you are.You share a part of yourselfwith all whose livesyou have touched.
To teach is to be tender,loving, strong, and giving,to all who rely upon you;to encourage and praise.But to teach wellis to believe in whatand whom you teach.
A teacher comes to masterthese many jobs throughout the years.But those who teach wellrecognize that therewill always be moreto learn in life''s journey,and they never hesitateto strive to learn it.“Friend, Supporter, Leader, Motivator; Believe in what and whom you teach; Always more to learn.” Linda was all of these things. She was one of those inspiring teachers who always strived for excellence. I was Linda''s Chair for 11 years. We''ve all heard of Linda''s good qualities, especially in this forum. Somehow, however, this quote seemed perfect:
“Most great men and women are not perfectly rounded in their personalities, but are instead people whose one driving enthusiasm is so great it makes their faults seem insignificant.” (Charles A. Cerami)As her Chair, I can tell you that Linda had a few faults. She was stubborn, impatient, demanding, and a perfectionist; but she was also dedicated, extremely loyal, caring, and fun-loving. She was a good friend. She was my friend. I felt that if Linda were here today, there are a few things she would expect me to say. I am going to focus on excellence; specifically, leadership and excellence in physical therapy education.I have chosen 3 main themes: (1) educators love to use stories, so I have a little story about friendship and my history with Linda to share with you; (2) the importance of leadership (and mentoring) in our profession; and (3) excellence in physical therapist professional programs –where we are now, and where we need to be. For me, all 3 are intertwined and inseparable, as you will soon see.In short, my goal is to enlighten and entertain, as well as to challenge you. 相似文献