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Fanno flow is the adiabatic flow through a constant area duct where the effect of friction is considered. Compressibility effects often come into consideration, although the Fanno flow model certainly also applies to incompressible flow. For this model, the duct area remains constant, the flow is assumed to be steady and one-dimensional, and no mass is added within the duct. The Fanno flow model is considered an irreversible process due to viscous effects. The viscous friction causes the flow properties to change along the duct. The frictional effect is modeled as a shear stress at the wall acting on the fluid with uniform properties over any cross section of the duct.

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  • علاقات تدفق فانو (ar)
  • Flujo de Fanno (es)
  • Fanno flow (en)
  • Flusso di Fanno (it)
rdfs:comment
  • علاقات تدفق فانو (بالإنجليزية:Fanno flow relationships): في النصوص الخاصة بالديناميكا الهوائية الداخلية، مناقشة علاقات فانو عادة ما تتم بتحليل أحادي البعد، حيث يتم تطبيق مبادئ بقاء الطاقة و بقاء الكتلة و بقاء كمية الحركة.و نتيجة ذلك كما متوقع تنشأ مجموعة من العلاقات المرتبطة بالخصائص الفيزيائية الحرارية( بالإنجليزية:thermophysical properties) عند نقاط مختلفة علي محور قناة ثابتة المساحة. (ar)
  • Fanno flow is the adiabatic flow through a constant area duct where the effect of friction is considered. Compressibility effects often come into consideration, although the Fanno flow model certainly also applies to incompressible flow. For this model, the duct area remains constant, the flow is assumed to be steady and one-dimensional, and no mass is added within the duct. The Fanno flow model is considered an irreversible process due to viscous effects. The viscous friction causes the flow properties to change along the duct. The frictional effect is modeled as a shear stress at the wall acting on the fluid with uniform properties over any cross section of the duct. (en)
  • El flujo de Fanno (por ) es un tipo de flujo compresible interno en conductos que se caracteriza por ser adiabático, sin cambio de masa y de área constante pero con los efectos derivados de la fricción. Esta se considera una en la pared del conducto. Es por tanto un flujo no isoentrópico. Aunque su resolución general es compresible, se aplica también a flujo incompresible. (es)
  • Il flusso di Fanno è un modello matematico di flusso adiabatico che scorre attraverso un condotto a sezione costante dove non sono trascurati gli effetti dell'attrito. Il nome deriva dall'ingegnere italiano Gino Girolamo Fanno che ne sviluppò il modello. Sono considerati gli effetti della comprimibilità del fluido, sebbene il modello si applichi anche a flussi incompressibili. Il modello di Fanno è considerato un processo irreversibile a causa degli effetti dell'attrito viscoso, il quale causa un cambiamento delle proprietà del fluido lungo il condotto. (it)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/Fanno-Rayleigh_confrontation_graph.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Fanno1.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Fanno_Properties.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Fanno_flow_through_a_nozzle.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/H-S_graph_of_a_Fanno_flow.png
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  • علاقات تدفق فانو (بالإنجليزية:Fanno flow relationships): في النصوص الخاصة بالديناميكا الهوائية الداخلية، مناقشة علاقات فانو عادة ما تتم بتحليل أحادي البعد، حيث يتم تطبيق مبادئ بقاء الطاقة و بقاء الكتلة و بقاء كمية الحركة.و نتيجة ذلك كما متوقع تنشأ مجموعة من العلاقات المرتبطة بالخصائص الفيزيائية الحرارية( بالإنجليزية:thermophysical properties) عند نقاط مختلفة علي محور قناة ثابتة المساحة. (ar)
  • Fanno flow is the adiabatic flow through a constant area duct where the effect of friction is considered. Compressibility effects often come into consideration, although the Fanno flow model certainly also applies to incompressible flow. For this model, the duct area remains constant, the flow is assumed to be steady and one-dimensional, and no mass is added within the duct. The Fanno flow model is considered an irreversible process due to viscous effects. The viscous friction causes the flow properties to change along the duct. The frictional effect is modeled as a shear stress at the wall acting on the fluid with uniform properties over any cross section of the duct. For a flow with an upstream Mach number greater than 1.0 in a sufficiently long enough duct, deceleration occurs and the flow can become choked. On the other hand, for a flow with an upstream Mach number less than 1.0, acceleration occurs and the flow can become choked in a sufficiently long duct. It can be shown that for flow of calorically perfect gas the maximum entropy occurs at M = 1.0. Fanno flow is named after Gino Girolamo Fanno. (en)
  • El flujo de Fanno (por ) es un tipo de flujo compresible interno en conductos que se caracteriza por ser adiabático, sin cambio de masa y de área constante pero con los efectos derivados de la fricción. Esta se considera una en la pared del conducto. Es por tanto un flujo no isoentrópico. Aunque su resolución general es compresible, se aplica también a flujo incompresible. Para una corriente con un número de Mach superior a 1 en un conducto lo bastante largo, la fricción desacelera el flujo hasta causar el bloqueo sónico. Para otra corriente con M<1, la fricción acelera el flujo hasta llegar a la misma situación para un conducto lo bastante largo. Se puede demostrar que para dicha situación de bloqueo, la entropía alcanza un máximo. (es)
  • Il flusso di Fanno è un modello matematico di flusso adiabatico che scorre attraverso un condotto a sezione costante dove non sono trascurati gli effetti dell'attrito. Il nome deriva dall'ingegnere italiano Gino Girolamo Fanno che ne sviluppò il modello. Sono considerati gli effetti della comprimibilità del fluido, sebbene il modello si applichi anche a flussi incompressibili. Il modello di Fanno è considerato un processo irreversibile a causa degli effetti dell'attrito viscoso, il quale causa un cambiamento delle proprietà del fluido lungo il condotto. In particolare le ipotesi per considerare il modello attendibile sono: * moto unidimensionale, ovvero sezione del condotto costante; * fenomeni di attrito non trascurabili; * flusso adiabatico; * assenza di scambio di lavoro con l'esterno; * gas perfetto, sia termicamente che caloricamente; * moto stazionario, cioè non dipendente dal tempo. Per un flusso con un numero di Mach a monte più grande dell'unità che scorra in un condotto sufficientemente lungo, a causa della decelerazione, si può giungere in una condizione di (o choking). D'altra parte, un flusso con un numero di Mach a monte minore di uno accelererà fino a portarsi in una condizione di saturazione in un condotto sufficientemente lungo. Può essere dimostrato che per flussi di gas caloricamente perfetti il massimo valore dell'entropia si ottiene ad un numero di Mach pari ad uno. (it)
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