Results 21 to 30 of about 443,866 (305)

Adjustment of a turbulent boundary layer to a 'canopy' of roughness elements [PDF]

, 2003
A model is developed for the adjustment of the spatially averaged time-mean flow of a deep turbulent boundary layer over small roughness elements to a canopy of larger three-dimensional roughness elements.
Belcher, SE, Hunt, JCR, Jerram, N
core   +1 more source

A perturbative model for predicting the high-Reynolds-number behaviour of the streamwise travelling waves technique in turbulent drag reduction

, 2013
The background of this work is the problem of reducing the aerodynamic turbulent friction drag, which is an important source of energy waste in innumerable technological fields.
Belan, Marco, Quadrio, Maurizio
core   +1 more source

NACA 2412 Drag Reduction Using V-Shaped Riblets

Eng
This research focuses on addressing a significant concern in the aviation industry, which is drag. The primary objective of this project is to achieve drag reduction through the implementation of riblets on a wing featuring the NACA 2412 aerofoil ...
Smitha Mol Selvanose, Siva Marimuthu, Abdul Waheed Awan, Kamran Daniel   +3 more
doaj   +1 more source

Drag Reduction Mechanism of Viscoelastic Slick-Water Fracturing Fluid in Tortuous and Rough Fractures

Geofluids, 2021
Slick-water can effectively reduce the flow drag of fracturing fluid. Many studies have focused on the drag reduction performance of slick-water in wellbore and perforation, but there has been little research on drag reduction characteristics in fracture
Zhiyu Liu, Fan Fan, Donghang Zhang, Yang Li, Yuan Li, Kai Yang, Hongkui Ge, Fujian Zhou   +7 more
doaj   +1 more source

An investigation into unsteady base bleed for drag reduction in bluff two-box SUVs [PDF]

, 2009
This paper discusses a preliminary investigation into the use of base bleed on a production SUV using CFD analysis. The paper shows the methods used in creating the computational model and conducting the analysis, and present the findings to date.
Kennedy, Johnathan J., Lamond, Andrew D., Stickland, Matthew   +2 more
core  

Inhibition of CDK9 enhances AML cell death induced by combined venetoclax and azacitidine

Molecular Oncology, EarlyView.
The CDK9 inhibitor AZD4573 downregulates c‐MYC and MCL‐1 to induce death of cytarabine (AraC)‐resistant AML cells. This enhances VEN + AZA‐induced cell death significantly more than any combination of two of the three drugs in AraC‐resistant AML cells.
Shuangshuang Wu, Jianlei Zhao, Aaban Asfar Azmi, Avanti Gupte, Jenna Thibodeau, Shuang Liu, Jinli Yang, Guan Wang, Holly Edwards, Lisa A. Polin, Juiwanna Kushner, Sijana H. Dzinic, Kathryn White, Julie Boerner, Maik Hüttemann, Jay Yang, Yue Wang, Jeffrey W. Taub, Yubin Ge   +18 more
wiley   +1 more source

Calculation and uncertainty analysis method for airfoil drag coefficient considering compressibility

AIP Advances
In order to meet the need of evaluating the effectiveness of airfoil drag reduction design, the calculation and uncertainty analysis method for airfoil drag coefficient considering compressibility is studied.
Yufeng Du, Qiuting Guo, Lulu Wang, Jilong Zhu, Neng Xiong   +4 more
doaj   +1 more source

Optimal Design of an Ecofriendly Pickup Truck Overhang and Roof to Reduce the Drag Coefficient

Applied Sciences
Until now, various studies have been conducted on the drag coefficient of pickup trucks, but little research has been conducted on the effect of the front overhang length and roof design on the drag coefficient.
Min Seok Kim, Yein Bang, Jongwon Kim, Taek Keun Kim   +3 more
doaj   +1 more source

Effect of wearing a swimsuit on hydrodynamic drag of swimmer

Brazilian Archives of Biology and Technology, 2012
The purpose of this study was to analyse the effect of wearing a swimsuit on swimmer's passive drag. A computational fluid dynamics analysis was carried out to determine the hydrodynamic drag of a female swimmer's model (i) wearing a standard swimsuit ...
Daniel Almeida Marinho, Vishveshwar Rajendra Mantha, João Paulo Vilas-Boas, Rui Jorge Ramos, Leandro Machado, Abel Ilah Rouboa, António José Silva   +6 more
doaj   +1 more source

Aerodynamic Study of a Drag Reduction System and Its Actuation System for a Formula Student Competition Car

Fluids, 2022
This work presents a computational fluid dynamic (CFD) analysis of a drag reduction system (DRS) used in a Formula Student competition vehicle, focusing on the interaction between the triple wing elements, as well as on the electrical actuators used to ...
Ricardo Loução, Gonçalo O. Duarte, Mário J. G. C. Mendes   +2 more
doaj   +1 more source