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The Rankine vortex is a simple mathematical model of a vortex in a viscous fluid. It is named after its discoverer, William John Macquorn Rankine. The vortices observed in nature are usually modelled with an irrotational (potential or free) vortex. However, in potential vortex, the velocity becomes infinite at the vortex center. In reality, very close to the origin, the motion resembles a solid body rotation. The Rankine vortex model assumes a solid-body rotation inside a cylinder of radius and a potential vortex outside the cylinder. The radius is referred to as the vortex-core radius. The velocity components of the Rankine vortex, expressed in terms of the cylindrical-coordinate system are given by

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  • El vórtice de Rankine es un modelo matemático simple de un vórtice en un fluido viscoso. Lleva el nombre de su descubridor, William John Macquorn Rankine. Un flujo en remolino en un fluido viscoso puede ser caracterizado por un núcleo central que comprende un vórtice forzado, rodeado por un vórtice libre. En un fluido no viscoso, por otro lado, un flujo arremolinándose consiste enteramente de un vórtice libre con una singularidad en su punto de centro. La velocidad tangencial​ de un vórtice Rankine con circulación y radio es: El resto de los componentes de la velocidad son idénticamente cero, de modo que el campo de velocidad total es . (es)
  • The Rankine vortex is a simple mathematical model of a vortex in a viscous fluid. It is named after its discoverer, William John Macquorn Rankine. The vortices observed in nature are usually modelled with an irrotational (potential or free) vortex. However, in potential vortex, the velocity becomes infinite at the vortex center. In reality, very close to the origin, the motion resembles a solid body rotation. The Rankine vortex model assumes a solid-body rotation inside a cylinder of radius and a potential vortex outside the cylinder. The radius is referred to as the vortex-core radius. The velocity components of the Rankine vortex, expressed in terms of the cylindrical-coordinate system are given by where is the circulation strength of the Rankine vortex. Since solid-body rotation is characterized by an azimuthal velocity , where is the constant angular velocity, one can also use the parameter to characterize the vortex. The vorticity field associated with the Rankine vortex is Inside the core of the Rankine vortex, the vorticity is constant and twice the angular velocity, whereas outside the core, the flow is irrotational. In reality, vortex cores are not always exactly circular; and vorticity is not uniform within the vortex core. (en)
  • ランキン渦またはランキンの結合渦(英: Rankine's combined vortex)とは、渦度分布の一様な中核部分と、その外側の渦なしの部分からなる渦である。日常的に水面などに見られる渦を流体力学で考察する際に、単純化された近似モデルとして使われる。 (ja)
  • Il vortice di Rankine è un semplice modello matematico di un vortice in un fluido viscoso. Prende il nome dal suo scopritore, William John Macquorn Rankine. Un flusso rotante, in un fluido viscoso, può essere caratterizzato da un nucleo centrale, composto da un vortice forzato, circondato da un vortice libero. In un fluido non viscoso, d'altra parte, un flusso vorticoso consiste semplicemente in un vortice libero con una singolarità nel punto centrale. La velocità tangenziale di un vortice di Rankine con circolazione e raggio si esprime con la relazione: Le altre componenti di velocità sono identicamente nulle, perciò il campo totale della velocità è . (it)
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  • ランキン渦またはランキンの結合渦(英: Rankine's combined vortex)とは、渦度分布の一様な中核部分と、その外側の渦なしの部分からなる渦である。日常的に水面などに見られる渦を流体力学で考察する際に、単純化された近似モデルとして使われる。 (ja)
  • El vórtice de Rankine es un modelo matemático simple de un vórtice en un fluido viscoso. Lleva el nombre de su descubridor, William John Macquorn Rankine. Un flujo en remolino en un fluido viscoso puede ser caracterizado por un núcleo central que comprende un vórtice forzado, rodeado por un vórtice libre. En un fluido no viscoso, por otro lado, un flujo arremolinándose consiste enteramente de un vórtice libre con una singularidad en su punto de centro. La velocidad tangencial​ de un vórtice Rankine con circulación y radio es: (es)
  • The Rankine vortex is a simple mathematical model of a vortex in a viscous fluid. It is named after its discoverer, William John Macquorn Rankine. The vortices observed in nature are usually modelled with an irrotational (potential or free) vortex. However, in potential vortex, the velocity becomes infinite at the vortex center. In reality, very close to the origin, the motion resembles a solid body rotation. The Rankine vortex model assumes a solid-body rotation inside a cylinder of radius and a potential vortex outside the cylinder. The radius is referred to as the vortex-core radius. The velocity components of the Rankine vortex, expressed in terms of the cylindrical-coordinate system are given by (en)
  • Il vortice di Rankine è un semplice modello matematico di un vortice in un fluido viscoso. Prende il nome dal suo scopritore, William John Macquorn Rankine. Un flusso rotante, in un fluido viscoso, può essere caratterizzato da un nucleo centrale, composto da un vortice forzato, circondato da un vortice libero. In un fluido non viscoso, d'altra parte, un flusso vorticoso consiste semplicemente in un vortice libero con una singolarità nel punto centrale. La velocità tangenziale di un vortice di Rankine con circolazione e raggio si esprime con la relazione: (it)
rdfs:label
  • Vórtice de Rankine (es)
  • Vortice di Rankine (it)
  • ランキン渦 (ja)
  • Rankine vortex (en)
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