Results 21 to 30 of about 37,005 (263)

CFD Simulations of Hydrogen Tank Fuelling: Sensitivity to Turbulence Model and Grid Resolution

Hydrogen, 2023
CFD modelling of compressed hydrogen fuelling provides information on the hydrogen and tank structure temperature dynamics required for onboard storage tank design and fuelling protocol development. This study compares five turbulence models to develop a
Hanguang Xie, Dmitriy Makarov, Sergii Kashkarov, Vladimir Molkov   +3 more
doaj   +1 more source

Comparative study on related models of propeller cavitation numerical simulation

Zhongguo Jianchuan Yanjiu, 2023
ObjectiveThe purpose of this paper is to study the effects of cavitation models on the simulation of full-scale propeller cavitation. MethodsThe minimum rotational speed of the propeller required for cavitation is predicted by the Bernoulli equation, and
Jiahao SHI, Dahai ZHANG, Shihua XU, Yuting CHEN, Shenglei QIN, Xu LIU, Guoxiang HOU   +6 more
doaj   +1 more source

Modeling Profiles of Micrometeorological Variables in a Tropical Premontane Rainforest Using Multi‐Layered CLM (CLM‐ML)

Journal of Advances in Modeling Earth Systems, 2021
This study updates the multi‐layered Community Land Model (CLM‐ml) for hillslopes and compares predictions from against observations collected in tropical montane rainforest, Costa Rica.
Jaeyoung Song, Gretchen R. Miller, Anthony T. Cahill, Luiza Maria T. Aparecido, Georgianne W. Moore   +4 more
doaj   +1 more source

The Influence of Reynolds Number on Boundary Layer Development and Stall Characteristics of Airfoil

Hangkong gongcheng jinzhan, 2019
Airfoil stall and its boundary layer development are fundamental scientific issues in aircraft design. For the trailing edge stall airfoil, The transition model coupled the Mentor k -ω SST model with the disturbance amplification factor transport ...
Zhang Yanjun, Zhao Ke, Zhang Tongxin, Chen Lili   +3 more
doaj   +1 more source

Computational Fluid Dynamics Simulation to Predict the Airflow and Turbulence in a Wind Farm in Open Complex Terrain

Proceedings, 2020
The performance of a wind turbine depends on the characteristics of the airflow as well as the conditions of the atmospheric boundary layer (ABL). To evaluate accurately the amount of wind energy, it is required to have the exact height distribution of ...
Amahjour Narjisse, Abdellatif Khamlichi
doaj   +1 more source

Assessment of RANS turbulence models and Zwart cavitation model empirical coefficients for the simulation of unsteady cloud cavitation

Engineering Applications of Computational Fluid Mechanics, 2020
The numerical simulation of unsteady cavitation flows is sensitive to the selected models and associated parameters. Consequently, three Reynolds Average Navier-Stokes (RANS) turbulence models and the Zwart cavitation model were selected to assess their ...
Linlin Geng, Xavier Escaler
doaj   +1 more source

Validation of a helicopter turbulence model on PUMA 330 dynamics [PDF]

INCAS Bulletin, 2019
Aircraft and algorithms used in automated flight control are always designed for calm atmospheric conditions; therefore, testing their behaviour in realistic atmospheric conditions implies the necessity for efficient turbulence models.
Irina-Beatrice STEFANESCU, Andreea-Irina AFLOARE, Achim IONITA   +2 more
doaj   +1 more source

Feasibility Study of Rans in Predicting Propeller Cavitation in Behind-Hull Conditions

Polish Maritime Research, 2020
The propeller cavitation not only affects the propulsive efficiency of a ship but also can cause vibration and noise. Accurate predictions of propeller cavitation are crucial at the design stage.
Zhang Yuxin, Wu Xiao-ping, Lai Ming-yan, Zhou Guo-ping, Zhang Jie   +4 more
doaj   +1 more source

Influence of turbulence on the drop growth in warm clouds, Part II: Sensitivity studies with a spectral bin microphysics and a Lagrangian cloud model

Meteorologische Zeitschrift, 2015
Raindrops in warm clouds grow faster than predicted by classical cloud models. One of the possible reasons for this discrepancy is the influence of cloud turbulence on the coagulation process.
Theres Riechelmann, Ulrike Wacker, Klaus D. Beheng, Dieter Etling, Siegfried Raasch   +4 more
doaj   +1 more source

Investigation of Hydraulic Jump Turbulence Parameters in Divergent Rectangular Sections using Fluent Model [PDF]

علوم و مهندسی آبیاری, 2018
A Stilling basin with divergent section has better performance and lower constructional costs than the classic basin. It can easily adapt itself to the upstream and downstream conditions in terms of depths and cross sections (Omid et al., 2007).
Mohammad Reza Nikpour
doaj   +1 more source