Results 21 to 30 of about 45,091 (268)

A semi-implicit discrepancy model of Reynolds stress in a higher-order tensor basis framework for Reynolds-averaged Navier–Stokes simulations

AIP Advances, 2021
With the rapid development of artificial intelligence, machine learning algorithms are becoming more widely applied in the modification of turbulence models. In this paper, with the aim of improving the prediction accuracy of the Reynolds-averaged Navier–
Zhen Zhang, Shuran Ye, Bo Yin, Xudong Song, Yiwei Wang, Chenguang Huang, Yaosong Chen   +6 more
doaj   +1 more source

Rapid evaluation of capillary pressure and relative permeability for oil–water flow in tight sandstone based on a physics-informed neural network

Journal of Petroleum Exploration and Production Technology, 2023
Efficient and accurate evaluation of capillary pressure and relative permeability of oil–water flow in tight sandstone with limited routinely obtainable parameters is a crucial problem in tight oil reservoir modeling and petroleum engineering. Due to the
Lili Ji, Fengyang Xu, Mian Lin, Wenbin Jiang, Gaohui Cao, Songtao Wu, Xiaohua Jiang   +6 more
doaj   +1 more source

Data-driven rapid prediction model for aerodynamic force of high-speed train with arbitrary streamlined head

Engineering Applications of Computational Fluid Mechanics, 2022
Due to the complicated geometric shape, it's difficult to precisely obtain the aerodynamic force of high-speed trains. Taking numerical and experimental data as the training data, the present work proposed a data-driven rapid prediction model to solve ...
Dawei Chen, Zhenxu Sun, Shuanbao Yao, Shengfeng Xu, Bo Yin, Dilong Guo, Guowei Yang, Sansan Ding   +7 more
doaj   +1 more source

Fluid-solid Coupling Analysis of Riser based on CFD

Scientific Journal of Technology, 2023
The riser is the only channel connecting the submarine pipeline oil gas and offshore platform structures, offshore oil and gas development and utilization of lifelines, offshore pipeline system is the weakest vulnerable link. Due to its long and thin structure, the marine riser is easy to failure and failure in the complex working conditions.
Haifeng Ma, Xian Qin, Jie Qiu, Wenjie Xie, Zhixu Zhou   +4 more
openaire   +1 more source

Supercavitating flow around high-speed underwater projectile near free surface induced by air entrainment

AIP Advances, 2018
Cavitating flow near free surface is a complicated issue and may provide new inspiration on high-speed surface cruising. This study observes stable supercavitating flow as a new phenomenon in a launch experiment of axisymmetric projectile when the upper ...
Chang Xu, Jian Huang, Yiwei Wang, Xiaocui Wu, Chenguang Huang, Xianqian Wu   +5 more
doaj   +1 more source

Analytical solutions for sediment concentration in waves based on linear diffusivity

Theoretical and Applied Mechanics Letters, 2021
Two kinds of analytical solutions are derived through Laplace transform for the equation that governs wave-induced suspended sediment concentration with linear sediment diffusivity under two kinds of bottom boundary conditions, namely the reference ...
Yiqin Xie, Jifu Zhou, Xu Wang, Yanrong Kuai, Yongjun Lu   +4 more
doaj   +1 more source

Fluid-solid Coupling Analysis of the Pressure Expansion of Packers

Journal of Physics: Conference Series, 2020
Abstract For the packers, the pressure expansion process and differential pressure loading process have been simulated by the fluid-solid coupling finite element method. The results show that under the internal pressure load of 10MPa at both ends of the hydraulic oil, the structure of the packer can be fully expanded, and the simulated ...
Lanwen Wang, Junxu Ge, Xuanyu Sheng
openaire   +1 more source

Surrogate Based Optimization of Aerodynamic Noise for Streamlined Shape of High Speed Trains

Applied Sciences, 2017
Aerodynamic noise increases with the sixth power of the running speed. As the speed increases, aerodynamic noise becomes predominant and begins to be the main noise source at a certain high speed.
Zhenxu Sun, Ye Zhang, Guowei Yang
doaj   +1 more source

Response of a plate in turbulent channel flow: Analysis of fluid–solid coupling

Journal of Fluids and Structures, 2021
The paper performs simulation of a rectangular plate excited by turbulent channel flow at friction Reynolds numbers of 180 and 400. The fluid-structure interaction is assumed to be one-way coupled, i.e, the fluid affects the solid and not vice versa. We solve the incompressible Navier Stokes equations using finite volume direct numerical simulation in ...
Anantharamu, Sreevatsa, Mahesh, Krishnan
openaire   +3 more sources

Identification of a Shiga toxin A‐derived peptide internalized into Gb3 receptor‐bearing cells via interaction with the Shiga toxin B subunit

FEBS Letters, EarlyView.
The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi, João C. Encarnação, Valeria Napolitano, Grzegorz Dubin, Grzegorz Popowicz, Karl Andersson, U. Helena Danielson   +6 more
wiley   +1 more source