Zobrazeno 1 - 10
of 516
pro vyhledávání: '"reynolds-averaged navier stokes (rans)"'
Autor:
Namug Heo, Ji-Hye Kim
Publikováno v:
Journal of Marine Science and Engineering, Vol 12, Iss 9, p 1681 (2024)
The occurrence of cavitation in marine propellers is a major source of noise in ships. Consequently, the occurrence and noise characteristics of cavitation must be better understood to control this issue. This study focuses on identifying the occurre
Externí odkaz:
https://doaj.org/article/b9831a20c3e44d539fa163becb69d6de
Publikováno v:
Aerospace, Vol 11, Iss 5, p 412 (2024)
Reynolds-averaged Navier–Stokes simulations are performed for supersonic turbulent flow over a cylinder/flare with upstream surface distortion representative of structural deformation induced via fluid–structural and fluid–thermal–structural
Externí odkaz:
https://doaj.org/article/e0fbe6d6e04a4b12bf66ab1c78e978e3
Publikováno v:
Shanghai Jiaotong Daxue xuebao, Vol 57, Iss 2, Pp 168-176 (2023)
The hydrodynamic characteristics of a propeller under the crashback condition are closely related to the crash stopping ability of a ship, which directly affect the ship navigational safety. In this paper, a numerical study on the hydrodynamic charac
Externí odkaz:
https://doaj.org/article/9952c86417b74fd6b9d8b1ce7c69b30d
Autor:
Adeyemi Fagbade, Stefan Heinz
Publikováno v:
Applied Sciences, Vol 14, Iss 7, p 2705 (2024)
Reynolds-averaged Navier–Stokes (RANS), large eddy simulation (LES), and hybrid RANS-LES, first of all wall-modeled LES (WMLES) and detached eddy simulation (DES) methods, are regularly applied for wall-bounded turbulent flow simulations. Their cha
Externí odkaz:
https://doaj.org/article/9b9a0c571525495487d8b602843be43b
Publikováno v:
Machine Learning: Science and Technology, Vol 5, Iss 3, p 035030 (2024)
This study explores the implementation of physics-informed neural networks (PINNs) to analyze turbulent flow in composite porous-fluid systems. These systems are composed of a fluid-saturated porous medium and an adjacent fluid, where the flow proper
Externí odkaz:
https://doaj.org/article/9097d28c9fa642ec96197d447f38c8a4
Autor:
Adeyemi Fagbade, Stefan Heinz
Publikováno v:
Fluids, Vol 9, Iss 1, p 22 (2024)
The usual concept of simulation methods for turbulent flows is to impose a certain (partial) flow resolution. This concept becomes problematic away from limit regimes of no or an almost complete flow resolution: discrepancies between the imposed and
Externí odkaz:
https://doaj.org/article/f9ffa3dff1f84d919ab5821144a69aaf
Akademický článek
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Publikováno v:
Propulsion and Power Research, Vol 11, Iss 3, Pp 337-352 (2022)
Turbofan engine intakes are designed to provide separation-free flow at the fan face over a wide range of operating conditions. But at some off-design conditions, like at high flight speeds and high angles of attack (AoA), the aero engine intake may
Externí odkaz:
https://doaj.org/article/58af7c3aa51b4cdda4a8d9c39b19cdde
Publikováno v:
International Journal of Numerical Methods for Heat & Fluid Flow, 2021, Vol. 32, Issue 4, pp. 1299-1323.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/HFF-08-2021-0519
Autor:
Gu-Hyeon Kim, Seunghyun Hwang, Soon-Hyun Lee, Jun-Hee Lee, Jun Hwangbo, Kwang-Soo Kim, Kwang-Jun Paik
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 10, p 1913 (2023)
Accurate resistance performance evaluation is essential to predict the minimum propulsion horsepower required for ships in real sea. Therefore, in this paper, the added resistance performance of K-Supramax in various wave conditions was calculated us
Externí odkaz:
https://doaj.org/article/6dfce58e54904877bffadac30c5b61b6