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۱Aerodynamic and Thermal Characteristics of a Hot Jet in Parallel Flow
نویسنده(ها): ،
اطلاعات انتشار: Journal Of Applied Fluid Mechanics، نهم،شماره۵، ۲۰۱۶، سال
تعداد صفحات: ۶
This paper presents an experimental investigation of the aerodynamic and thermal characteristics of a round jet of hot air, injected through a nozzle into a parallel air flow, simulating a hot streak. Experiments were performed by imposing the same total pressure, established by means of a five–hole probe, for the mainstream and the jet at nozzle exit. Time–averaged temperatures at different points over planes downstream of the nozzle exit section were measured by thermocouple rakes. Experimental data, presented in a non–dimensional form, provide a representation not correlated to individual maximum jet temperature and Reynolds number, in the respective fields of variation. The attenuation of the hot jet strength is reported as a function of the normalized axial coordinate for the various operating conditions considered. Results obtained for the hot jet discharged into a parallel flow are compared with data obtained for the hot jet spreading into stagnant air.
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