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Tehnički vjesnik, Vol.24 No.5 Listopad 2017.

Izvorni znanstveni članak
https://doi.org/10.17559/TV-20150707172830

Time-periodic incompressible flow simulation using non-linear frequency domain approach

M. H. Shojaeefard ; Faculty of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran, 168461
A. Khorampanahi ; Faculty of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran, 168461
M. Kharati Koopaee   ORCID icon orcid.org/0000-0003-3270-8663 ; Faculty of Mechanical Engineering, Shitaz University of Technology, Modares Blv., Shiraz, Iran, 715571

Puni tekst: engleski, pdf (1 MB) str. 1307-1314 preuzimanja: 112* citiraj
APA 6th Edition
Shojaeefard, M.H., Khorampanahi, A. i Kharati Koopaee, M. (2017). Time-periodic incompressible flow simulation using non-linear frequency domain approach. Tehnički vjesnik, 24 (5), 1307-1314. https://doi.org/10.17559/TV-20150707172830
MLA 8th Edition
Shojaeefard, M. H., et al. "Time-periodic incompressible flow simulation using non-linear frequency domain approach." Tehnički vjesnik, vol. 24, br. 5, 2017, str. 1307-1314. https://doi.org/10.17559/TV-20150707172830. Citirano 19.08.2018.
Chicago 17th Edition
Shojaeefard, M. H., A. Khorampanahi i M. Kharati Koopaee. "Time-periodic incompressible flow simulation using non-linear frequency domain approach." Tehnički vjesnik 24, br. 5 (2017): 1307-1314. https://doi.org/10.17559/TV-20150707172830
Harvard
Shojaeefard, M.H., Khorampanahi, A., i Kharati Koopaee, M. (2017). 'Time-periodic incompressible flow simulation using non-linear frequency domain approach', Tehnički vjesnik, 24(5), str. 1307-1314. doi: https://doi.org/10.17559/TV-20150707172830
Vancouver
Shojaeefard MH, Khorampanahi A, Kharati Koopaee M. Time-periodic incompressible flow simulation using non-linear frequency domain approach. Tehnički vjesnik [Internet]. 25.10.2017. [pristupljeno 19.08.2018.];24(5):1307-1314. doi: https://doi.org/10.17559/TV-20150707172830
IEEE
M.H. Shojaeefard, A. Khorampanahi i M. Kharati Koopaee, "Time-periodic incompressible flow simulation using non-linear frequency domain approach", Tehnički vjesnik, vol.24, br. 5, str. 1307-1314, Kolovoz 2018. [Online]. doi: https://doi.org/10.17559/TV-20150707172830
Puni tekst: hrvatski, pdf (1 MB) str. 1307-1314 preuzimanja: 46* citiraj
APA 6th Edition
Shojaeefard, M.H., Khorampanahi, A. i Kharati Koopaee, M. (2017). Simulacija vremenski periodičnog nestlačljivog toka pristupom ne-linearnog područja frekvencije. Tehnički vjesnik, 24 (5), 1307-1314. https://doi.org/10.17559/TV-20150707172830
MLA 8th Edition
Shojaeefard, M. H., et al. "Simulacija vremenski periodičnog nestlačljivog toka pristupom ne-linearnog područja frekvencije." Tehnički vjesnik, vol. 24, br. 5, 2017, str. 1307-1314. https://doi.org/10.17559/TV-20150707172830. Citirano 19.08.2018.
Chicago 17th Edition
Shojaeefard, M. H., A. Khorampanahi i M. Kharati Koopaee. "Simulacija vremenski periodičnog nestlačljivog toka pristupom ne-linearnog područja frekvencije." Tehnički vjesnik 24, br. 5 (2017): 1307-1314. https://doi.org/10.17559/TV-20150707172830
Harvard
Shojaeefard, M.H., Khorampanahi, A., i Kharati Koopaee, M. (2017). 'Simulacija vremenski periodičnog nestlačljivog toka pristupom ne-linearnog područja frekvencije', Tehnički vjesnik, 24(5), str. 1307-1314. doi: https://doi.org/10.17559/TV-20150707172830
Vancouver
Shojaeefard MH, Khorampanahi A, Kharati Koopaee M. Simulacija vremenski periodičnog nestlačljivog toka pristupom ne-linearnog područja frekvencije. Tehnički vjesnik [Internet]. 25.10.2017. [pristupljeno 19.08.2018.];24(5):1307-1314. doi: https://doi.org/10.17559/TV-20150707172830
IEEE
M.H. Shojaeefard, A. Khorampanahi i M. Kharati Koopaee, "Simulacija vremenski periodičnog nestlačljivog toka pristupom ne-linearnog područja frekvencije", Tehnički vjesnik, vol.24, br. 5, str. 1307-1314, Kolovoz 2018. [Online]. doi: https://doi.org/10.17559/TV-20150707172830

Sažetak
The capability of nonlinear reduced frequency domain (NLFD) approach in predicting the flow field of time-periodic incompressible flow is investigated. The efficient NLFD method uses Fourier series representation in time considering the assumption of solution periodicity and the resulting nonlinear equations are solved using pseudo-spectral approach. In this manner, the desired periodic solution can directly be obtained without the need to solve the initial transient part. Thus, without loss of generality a considerable computational cost reduction can be achieved in comparison with the common time-accurate methods. In the present algorithm (INLFD) the NLFD approach is used to solve the flow field in an incompressible formulation and the validation is performed using some periodic test cases with analytical solutions. The results show that capturing only a limited number of temporal modes can provide an accurate estimation of the flow field. Finally, the computational costs of the INLFD and a time-accurate method are also compared which demonstrate the efficiency of the INLFD method in representing nonlinear flow field physics by savings in computational time up to 50 percent.

Ključne riječi
incompressible flow; non-linear reduced frequency; pressure Poisson; pseudo-spectral; time-periodic

Hrčak ID: 188223

URI
https://hrcak.srce.hr/188223

[hrvatski]

Posjeta: 294 *