Results 31 to 40 of about 9,345,647 (234)

Application of surrogate models to stability analysis and transition prediction in hypersonic flows

open access: yesAdvances in Aerodynamics, 2022
To increase the efficiency and robustness of stability-based transition prediction in flow simulations, simplified methods are introduced to substitute direct stability analyses for rapid disturbance growth prediction.
Han Nie   +4 more
doaj   +1 more source

Review of the Co-flow Jet Flow Control Method

open access: yesHangkong gongcheng jinzhan, 2022
The co-flow jet(CFJ)is a new concept flow control method based on blowing and suction technology.Since it was proposed,it has gradually attracted extensive attention.This paper reviews the basic principles,concepts,research methods and progress of CFJ ...
XU Heyong, MA Chengyu
doaj   +1 more source

Investigation of propeller slipstream effects on lateral and directional static stability of transport aircraft

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
The aerodynamic characteristics of turboprop aircraft are greatly affected by the running propellers. In this paper, propeller slipstream effects on the static lateral-directional stability characteristics of a typical twin-engine turboprop aircraft with
Shuai Zhao   +4 more
doaj   +1 more source

Dynamic Stall Control on the Wind Turbine Airfoil via a Co-Flow Jet

open access: yesEnergies, 2016
Dynamic stall control of a S809 airfoil is numerically investigated by implementing a co-flow jet (CFJ). The numerical methods of the solver are validated by comparing results with the baseline experiment as well as a NACA 6415-based CFJ experiment ...
He-Yong Xu   +2 more
doaj   +1 more source

Drag Characteristics and Reduction Test for Hub of Coaxial-rotor Helicopter

open access: yesHangkong gongcheng jinzhan, 2020
The drag of coaxial helicopter hub accounts is more than 50% of the total helicopter's waste drag, so it is necessary to research the drag characteristics and reduction design of the hub. Wind tunnel test is carried out for a coaxial helicopter hub model,
LONG Haibin, WU Yuping
doaj   +1 more source

Experience With Performing Rheocarna Therapy via the Single‐Needle Method for Treatment of Chronic Limb‐Threatening Ischemia

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction This study investigated the safety and efficacy of single‐needle Rheocarna therapy for chronic limb‐threatening ischemia (CLTI) with wounds. Methods Six patients with CLTI involving ulcers unresponsive to revascularization underwent single‐needle Rheocarna treatment.
Yasutaka Yamauchi   +9 more
wiley   +1 more source

Closed-loop Flow Control Method Based on Deep Reinforcement Learning using a Co-flow Jet [PDF]

open access: yesJournal of Applied Fluid Mechanics
A closed-loop control framework is developed for the co-flow jet (CFJ) airfoil by combining the numerical flow field environment of a CFJ0012 airfoil with a deep reinforcement learning (DRL) module called tensorforce integrated in Python.
Y. R. Zhao, H. Y. Xu, Z. Y. Xie
doaj   +1 more source

Magnetohydrodynamic Hybrid Nanofluid Flow Past an Exponentially Stretching Sheet with Slip Conditions

open access: yesMathematics, 2021
This study presents the magnetized hybrid nanofluid flow with heat source/sink over an exponentially stretching/shrinking sheet. Slip conditions are implemented to analyze the hybrid nanofluid flow for both slip and no-slip conditions.
Abdul Samad Khan, He-Yong Xu, Waris Khan
doaj   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida   +6 more
wiley   +1 more source

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola   +4 more
wiley   +1 more source

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