Tehnički vjesnik, Vol. 26 No. 3, 2019.
Izvorni znanstveni članak
https://doi.org/10.17559/TV-20190104103801
Heat Transfer Design for Bionic Surfaces in a Simplified Transition Segment of Marine Gas Turbine Combustor
Long Ma
; School of Mechanical and Aerospace Engineering, Jilin University & Theory Department of Aviation, Avation Unversity of Air Force, No. 5988, Renmin Street, Changchun, Jilin Province, 130022, P. R. China
Tao Xu
; School of Mechanical and Aerospace Engineering, Jilin University & Theory Department of Aviation, Avation Unversity of Air Force, No. 5988, Renmin Street, Changchun, Jilin Province, 130022, P. R. China
Tianyi Zhang
; School of Mechanical and Aerospace Engineering, Jilin University & Theory Department of Aviation, Avation Unversity of Air Force, No. 5988, Renmin Street, Changchun, Jilin Province, 130022, P. R. China
Zhenglei Yu
; School of Mechanical and Aerospace Engineering, Jilin University & Theory Department of Aviation, Avation Unversity of Air Force, No. 5988, Renmin Street, Changchun, Jilin Province, 130022, P. R. China
Haotian Guo
; School of Mechanical and Aerospace Engineering, Jilin University & Theory Department of Aviation, Avation Unversity of Air Force, No. 5988, Renmin Street, Changchun, Jilin Province, 130022, P. R. China
Sažetak
Gas turbine is a widely-used propulsion device for power convection in marine dynamical system. Conventional coolants such as impingement cooling and thermal protection material have lower convective heat transfer efficiency on the target surface which can hinder the development of marine gas turbine combustor. In this paper, impact cooling simplification models are established, which have simulated the function of the transition segment of marine gas turbine combustor to be protected from high temperature. Being enlightened by the butterfly scale, four types of bionic ribs are designed on the simplification models. During the analysis, conservation equations for mass, momentum and energy are solved by using finite volume method with Realizable k−ε turbulence model. By comparing the four types bionic ribs models, the surface with Type 3 rib structure has the best cooling efficiency. The results show that the sharp corner and unequal length fins of bionic rib could affect the cooling efficiency. The inspire application of the bionic structures will provide a reference for new cooling structure design in marine gas turbine combustor.
Ključne riječi
bionic thermal surface; computational fluid dynamics (CFD); convective heat transfer; marine gas turbine
Hrčak ID:
220997
URI
Datum izdavanja:
12.6.2019.
Posjeta: 1.836 *