Assessment of the transition strip effect in the transonic flow over the sounding rocket Sonda III

2016 Joint IMEKO TC1-TC7-TC13 Symposium: Metrology Across the Sciences: Wishful Thinking?

Filho, J B P Falcão^1,2 ; Reis, M.L.C.C.^1,2 ; Francisco, C.P.F.^1 ; Silva, L.M.^2

Instituto de Aeronáutica e Espaço, Pr. Mal. Eduardo Gomes 50, CEP 12228904, Brazil^1

Instituto Tecnológico de Aeronáutica, Pr. Mal. Eduardo Gomes 50, CEP 12228901, Brazil^2

关键词: Experimental verification;    Flow behaviours;    Load distributions;    Measurements of;    Transition phenomenon;    Turbulent structures;    Turbulent transition;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/772/1/012056/pdf
DOI  :  10.1088/1742-6596/772/1/012056

来源: IOP

【 摘 要 】

Measurements of normalized pressure distribution are carried out over a 1:8 scale half-model of the Sonda III sounding rocket. The objective is to analyze the effect of the implementation of transition devices on the flow over the vehicle. Measurements show that the presence of the transition devices affect pressure distributions in different Mach numbers around the inter-stage region of Sonda III depending on its location and independently of the turbulent transition method employed. The study of these effects plays a significant role for future developments, since transition phenomena and the modification of the boundary layer behaviour due to the expansion can alter the load distributions and the turbulent structures of the flow. Furthermore, the experimental verification of such phenomena is crucial for the correct implementation of computational fluid dynamics calculations, as they might be able to capture the correct flow behaviour in these regions.