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So it is considered that in these periods of 19th century the theoretical study of the vortex motion reached the vertex of its studies. In the following periods it was even said that there were few contributions about theoretical studies of vortex motion except Bjerknes\u0027 circulation theorem of baroclinic fluid. Besides the only useful method about analytical expression of vortex motion in incompressible fluid, is Stokes\u0027 stream function in the cases of plane motion and axial symmetric one. Even in these cases soluble ones are constrained to linear or some special types of partial differential equations. Many people have considered that the theory of vortex motion in perfect fluid reaches the limit of its analytical method. Causes of the above-mentioned incorrect considerations may consist in the following circumstances. (i) Vector potential method introduced by He\\\nlmholtz has been prevailed in the theoretical view on account of his fame. But the application of this method to vortex motion is incorrect as shown below. (ii) In the treatment about the vortex motion of perfect fluid by the method of his expression, Clebsch commited a gross mistake, as pointed out in 5 of this paper. This fact prevented the theoretical development of vortex motion by Clebsch\u0027s expression. It is one of the objects of this paper to rectify the above mistake. (iii) To solve generally the differential equations for vortex motion is very difficult, because they have non-linear form. (iv) The interest of hydrodynamical researches has been directed recently to the turbulent problems on hydraurics and aerodynamics and the high speed problems on aerodynamics. However in the domain of meteorology the effects of rotation of the earth to motion of the atmosphere are essential, by which effects its motion may be transformed necessarily into vortex motion. So to solve the fundamental problem of meteorological dynamics, in the first place, we must treat the problem how to solve the vortex motion of perfect fluid from the pure theoretical point of view, especially the problem of solution of non-linear type from the analytica\\\nl point of view (cf. 7), While the author consulted the classical literature about vortex motion such as Helmholtz and Clebsch, he has found the hope to solve and develop these problems by amending their errors in the use of Clebsch\u0027s expression and applying a method of contact transformation. In this paper, differing from the usual treatments of vortex motion, by employing exclusively the method of Clebsch\u0027s expression for velocity we shall develop the theory of fluid motion with spread vorticity. In Part I its general theory is developed. In 1-3 a preliminary note for further discussions is delivered. In 4-5 the extension of Kelvin\u0027s circulation theorem and its relation with Bernoulli\u0027s equation are also discussed. By using Clebsch\u0027s in 6-7 the partial differential equation for stream function is transformed from the second order to the first order, but the general solutions of the latter will be discussed in the next paper. 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On the Theoretical Studies about the Vortex Motion of Perfect Fluid I
http://hdl.handle.net/10083/1942
http://hdl.handle.net/10083/1942cf3d2705-0225-4878-84d4-d3d7dd0f65c0
名前 / ファイル | ライセンス | アクション |
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KJ00004829279.pdf (944.1 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2008-04-30 | |||||
タイトル | ||||||
タイトル | On the Theoretical Studies about the Vortex Motion of Perfect Fluid I | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
著者 |
Shimose, Tsuneto
× Shimose, Tsuneto× 下瀬, 恒人 |
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著者(ヨミ) | ||||||
識別子 | 68834 | |||||
識別子Scheme | WEKO | |||||
姓名 | シモセ, ツネト | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | The investigation about the theory of vortex motion with vorticity continuously distributed in the perfect fluid, was mainly carried out about 90 years ago, by Clebsch and Helmholtz etc., and soon after Kelvin established his famous circulation theorem. So it is considered that in these periods of 19th century the theoretical study of the vortex motion reached the vertex of its studies. In the following periods it was even said that there were few contributions about theoretical studies of vortex motion except Bjerknes' circulation theorem of baroclinic fluid. Besides the only useful method about analytical expression of vortex motion in incompressible fluid, is Stokes' stream function in the cases of plane motion and axial symmetric one. Even in these cases soluble ones are constrained to linear or some special types of partial differential equations. Many people have considered that the theory of vortex motion in perfect fluid reaches the limit of its analytical method. Causes of the above-mentioned incorrect considerations may consist in the following circumstances. (i) Vector potential method introduced by He\ lmholtz has been prevailed in the theoretical view on account of his fame. But the application of this method to vortex motion is incorrect as shown below. (ii) In the treatment about the vortex motion of perfect fluid by the method of his expression, Clebsch commited a gross mistake, as pointed out in 5 of this paper. This fact prevented the theoretical development of vortex motion by Clebsch's expression. It is one of the objects of this paper to rectify the above mistake. (iii) To solve generally the differential equations for vortex motion is very difficult, because they have non-linear form. (iv) The interest of hydrodynamical researches has been directed recently to the turbulent problems on hydraurics and aerodynamics and the high speed problems on aerodynamics. However in the domain of meteorology the effects of rotation of the earth to motion of the atmosphere are essential, by which effects its motion may be transformed necessarily into vortex motion. So to solve the fundamental problem of meteorological dynamics, in the first place, we must treat the problem how to solve the vortex motion of perfect fluid from the pure theoretical point of view, especially the problem of solution of non-linear type from the analytica\ l point of view (cf. 7), While the author consulted the classical literature about vortex motion such as Helmholtz and Clebsch, he has found the hope to solve and develop these problems by amending their errors in the use of Clebsch's expression and applying a method of contact transformation. In this paper, differing from the usual treatments of vortex motion, by employing exclusively the method of Clebsch's expression for velocity we shall develop the theory of fluid motion with spread vorticity. In Part I its general theory is developed. In 1-3 a preliminary note for further discussions is delivered. In 4-5 the extension of Kelvin's circulation theorem and its relation with Bernoulli's equation are also discussed. By using Clebsch's in 6-7 the partial differential equation for stream function is transformed from the second order to the first order, but the general solutions of the latter will be discussed in the next paper. Considering our following discussions this Clebsch's expression seems to be the most powerful method to accomplish the theoretical study of vortex motion either in perfect fluid or in viscous fluid. |
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書誌情報 |
お茶の水女子大學自然科學報告 巻 2, p. 62-78, 発行日 1951-11 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00298190 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00033958 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
形態 | ||||||
944069 bytes | ||||||
日本十進分類法 | ||||||
主題Scheme | NDC | |||||
主題 | 400 | |||||
出版者 | ||||||
出版者 | お茶の水女子大学 | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | 紀要論文 | |||||
資源タイプ・ローカル | ||||||
紀要論文 | ||||||
資源タイプ・NII | ||||||
Departmental Bulletin Paper | ||||||
資源タイプ・DCMI | ||||||
text | ||||||
資源タイプ・ローカル表示コード | ||||||
03 | ||||||
所属 | ||||||
Department of Physics, Faculty of Science, Ochanomizu University |