| Effect of Stagnation Temperature on the Supersonic Two- Dimensional Plug Nozzle Conception. Application for Air |
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| 作者姓名： | Toufik Zebbiche ZineEddine Youbi |
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| 作者单位： | Department of Aeronautics Faculty of Sciences of Engineer University SAAD Dahleb of Blida B.P. 270 Ouled Yaich 09470 Blida Algeria，Department of Aeronautics Faculty of Sciences of Engineer University SAAD Dahleb of Blida B.P. 270 Ouled Yaich 09470 Blida Algeria |
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| 摘 要： | When the stagnation temperature of a perfect gas increases, the specific heats and their ratio do not remain constant any more and start to vary with this temperature. The gas remains perfect, its state equation remains always valid, except it will name in more calori-cally imperfect gas or gas at High Temperature. The goal of this research is to trace the profiles of the supersonic plug nozzle when this stagnation temperature is taken into account, lower than the threshold of dissociation of the molecules, by using the new formula of the Prandtl Meyer function, and to have for each exit Mach number, several nozzles shapes by changing the value of this temperature. A study on the error given by the PG (perfect gas) model compared to our model at high temperature is presented. The comparison is made with the case of a calorically perfect gas aiming to give a limit of application of this model. The application is for the air.
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| 关 键 词： | 超声速流动 塞形喷嘴 发热理想气体 内插 飞机坠毁 喷气机 |
| 收稿时间： | 21 December 2005 |
| 修稿时间： | 2005-12-212006-03-21 |
Effect of Stagnation Temperature on the Supersonic Two Dimensional Plug Nozzle Conception. Application for Air |
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| Toufik Zebbiche ZineEddine Youbi.Effect of Stagnation Temperature on the Supersonic Two- Dimensional Plug Nozzle Conception. Application for Air[J].Chinese Journal of Aeronautics,2007,20(1):15-28. |
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| Authors: | Toufik Zebbiche ZineEddine Youbi |
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| Institution: | Department of Aeronautics, Faculty of Sciences of Engineer, University SAAD Dahleb of Blida, B.P. 270 Ouled Yaich, 09470 Blida, Algeria |
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| Abstract: | When the stagnation temperature of a perfect gas increases, the specific heats and their ratio do not remain constant any more and start to vary with this temperature. The gas remains perfect, its state equation remains always valid, except it will name in more calorically imperfect gas or gas at High Temperature. The goal of this research is to trace the profiles of the supersonic plug nozzle when this stagnation temperature is taken into account, lower than the threshold of dissociation of the molecules, by using the new formula of the Prandtl Meyer function, and to have for each exit Mach number, several nozzles shapes by changing the value of this temperature. A study on the error given by the PG (perfect gas) model compared to our model at high temperature is presented. The comparison is made with the case of a calorically perfect gas aiming to give a limit of application of this model. The application is for the air. |
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| Keywords: | supersonic flow plug nozzle calorically imperfect gas interpolation Prandtl Meyer function stretching function Simpsonquadrature supersonic parameters conception Plug Nozzle Two Dimensional Supersonic Temperature Stagnation Effect comparison case application model study error value exit Mach number new formula Meyer function lower threshold |
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