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Tehnički vjesnik, Vol. 24 No. 3, 2017.

Izvorni znanstveni članak
https://doi.org/10.17559/TV-20141231143143

Numerical prediction of aerodynamic noise generated from missile for low Mach number flows

Vladimir Jazarević   ORCID icon orcid.org/0000-0002-9882-5822 ; University of Belgrade, Marka Oreškovića 12, 11000 Belgrade, Serbia
Boško Rašuo   ORCID icon orcid.org/0000-0002-0912-6844 ; University of Belgrade, Faculty of Mechanical Engineering, Aeronautical Department, Kraljice Marije 16, 11000 Belgrade, Serbia

Puni tekst: engleski, pdf (4 MB) str. 663-670 preuzimanja: 216* citiraj
APA 6th Edition
Jazarević, V. i Rašuo, B. (2017). Numerical prediction of aerodynamic noise generated from missile for low Mach number flows. Tehnički vjesnik, 24 (3), 663-670. https://doi.org/10.17559/TV-20141231143143
MLA 8th Edition
Jazarević, Vladimir i Boško Rašuo. "Numerical prediction of aerodynamic noise generated from missile for low Mach number flows." Tehnički vjesnik, vol. 24, br. 3, 2017, str. 663-670. https://doi.org/10.17559/TV-20141231143143. Citirano 08.03.2021.
Chicago 17th Edition
Jazarević, Vladimir i Boško Rašuo. "Numerical prediction of aerodynamic noise generated from missile for low Mach number flows." Tehnički vjesnik 24, br. 3 (2017): 663-670. https://doi.org/10.17559/TV-20141231143143
Harvard
Jazarević, V., i Rašuo, B. (2017). 'Numerical prediction of aerodynamic noise generated from missile for low Mach number flows', Tehnički vjesnik, 24(3), str. 663-670. https://doi.org/10.17559/TV-20141231143143
Vancouver
Jazarević V, Rašuo B. Numerical prediction of aerodynamic noise generated from missile for low Mach number flows. Tehnički vjesnik [Internet]. 2017 [pristupljeno 08.03.2021.];24(3):663-670. https://doi.org/10.17559/TV-20141231143143
IEEE
V. Jazarević i B. Rašuo, "Numerical prediction of aerodynamic noise generated from missile for low Mach number flows", Tehnički vjesnik, vol.24, br. 3, str. 663-670, 2017. [Online]. https://doi.org/10.17559/TV-20141231143143
Puni tekst: hrvatski, pdf (4 MB) str. 663-670 preuzimanja: 193* citiraj
APA 6th Edition
Jazarević, V. i Rašuo, B. (2017). Numeričko predviđanje aerodinamične buke koja se generira na projektilu pri malim Mahovim brojevima. Tehnički vjesnik, 24 (3), 663-670. https://doi.org/10.17559/TV-20141231143143
MLA 8th Edition
Jazarević, Vladimir i Boško Rašuo. "Numeričko predviđanje aerodinamične buke koja se generira na projektilu pri malim Mahovim brojevima." Tehnički vjesnik, vol. 24, br. 3, 2017, str. 663-670. https://doi.org/10.17559/TV-20141231143143. Citirano 08.03.2021.
Chicago 17th Edition
Jazarević, Vladimir i Boško Rašuo. "Numeričko predviđanje aerodinamične buke koja se generira na projektilu pri malim Mahovim brojevima." Tehnički vjesnik 24, br. 3 (2017): 663-670. https://doi.org/10.17559/TV-20141231143143
Harvard
Jazarević, V., i Rašuo, B. (2017). 'Numeričko predviđanje aerodinamične buke koja se generira na projektilu pri malim Mahovim brojevima', Tehnički vjesnik, 24(3), str. 663-670. https://doi.org/10.17559/TV-20141231143143
Vancouver
Jazarević V, Rašuo B. Numeričko predviđanje aerodinamične buke koja se generira na projektilu pri malim Mahovim brojevima. Tehnički vjesnik [Internet]. 2017 [pristupljeno 08.03.2021.];24(3):663-670. https://doi.org/10.17559/TV-20141231143143
IEEE
V. Jazarević i B. Rašuo, "Numeričko predviđanje aerodinamične buke koja se generira na projektilu pri malim Mahovim brojevima", Tehnički vjesnik, vol.24, br. 3, str. 663-670, 2017. [Online]. https://doi.org/10.17559/TV-20141231143143

Sažetak
Paper describes numerical prediction of aerodynamic noise generated from the missile. Simulation of turbulent flow is done solving incompressible Navier-Stokes equation, where turbulence is modelled with the orthogonal subgrid scale (OSGS) method with dynamical subscales. Because of comparison, the same simulation is done using the LES (Large Eddy simulation). It is shown how simulation of turbulent flow affects the prediction of acoustic sources calculated using Lighthill's analogy. Translation from time to frequency domain is done through DFT (Direct Fourier Transform), which gives smaller usage of memory. Acoustic sources are used in inhomogeneous Helmholtz equation to simulate pressure wave propagation in the domain. It is shown that OSGS with dynamical subscales gives better representation of the spectrum. Overall, better prediction of energy transfer across large and small eddies will give better allocation and presentation of acoustics sources. These sources will change wave propagation of the pressure in acoustic field.

Ključne riječi
aeroacoustics; direct Fourier transform; inhomogeneous Helmholtz equation; Litghill’s analogy; noise; orthogonal SGS method with dynamical subscales

Hrčak ID: 183021

URI
https://hrcak.srce.hr/183021

[hrvatski]

Posjeta: 668 *