Results 31 to 40 of about 34,518 (312)

Passive Blowing Strategy to Enhance Aerodynamic Performance and Noise of a Hollow-bladed Axial Fan: An Experimental Study [PDF]

open access: yesJournal of Applied Fluid Mechanics
This research explores the efficacy of a passive control strategy designed to enhance the performance of an axial hollow fan. This investigation uses a dedicated experimental setup to evaluate various aspects of the fan's performance, including ...
A. Bouanik   +5 more
doaj   +1 more source

Axial Fan Blade Vibration Assessment under Inlet Cross-Flow Conditions Using Laser Scanning Vibrometry

open access: yesApplied Sciences, 2017
In thermal power plants equipped with air-cooled condensers (ACCs), axial cooling fans operate under the influence of ambient flow fields. Under inlet cross-flow conditions, the resultant asymmetric flow field is known to introduce additional harmonic ...
Till Heinemann, Stefan Becker
doaj   +1 more source

Effect of axial spacing on rotating stall performance of FBCDZ-10-No20 contra-rotating fan

open access: yesMeitan kexue jishu, 2023
Mining contra-rotating fan are prone to rotational stall when it operates at low flow rates, which seriously affects the operational stability. The unsteady flow in the full flow passage of a FBCDZ-10-No20 contra-rotating fan at five axial spacings was ...
Qingguang CHEN   +3 more
doaj   +1 more source

Numerical investigation of differential speed operation of two impellers of contra-rotating axial-flow fan

open access: yesAdvances in Mechanical Engineering, 2017
A contra-rotating axial-flow fan is prone to stalling and motor overload at partial flow rates. Moreover, its efficiency decreases sharply at a high flow rate, which is accompanied by disparity between the shaft powers of the two impellers and the light ...
Xiaobo Sun   +3 more
doaj   +1 more source

A novel approach for the design of axial flow fan by increasing by-pass ratio in a constant-diameter turbofan

open access: yesPropulsion and Power Research, 2020
The present study introduces an innovative aerodynamic redesign of an axial flow fan based on constant diffusion factor and radial equilibrium. All input design parameters such as mass flow rate, hub to tip ratio, aspect ratio, tip diameter and angular ...
Ali Shahsavari, Mahdi Nili-Ahmadabadi
doaj   +1 more source

Design and Performance Analysis of Blades Based on the Equal–Variable Circulation Method

open access: yesFrontiers in Energy Research, 2021
With the aim of improving the aerodynamic performance of axial turbomachinery, a new type of blade is designed using the equal–variable circulation method.
D. Liang   +5 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Influence of axial spacing on stall development of FBCDZ-10-No20 mode contra-rotating fan

open access: yesMeitan kexue jishu, 2023
The rotating fan is prone to instability such as stall and even surge when operating at low flow rates. In order to study the influence of axial spacings on the stall inception and its development and propagation process of a contra-rotating fan , a ...
Qingguang CHEN   +3 more
doaj   +1 more source

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

open access: yesFEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point   +7 more
wiley   +1 more source

Numerical investigation of recess casing treatments in axial flow fans [PDF]

open access: yes, 2003
T he casing treatment technique for the axial fan has never been more significant since its potential applications were recognized in gas turbines, tunnel ventilation and many other industrial applications where the axial fan would benefit from the ...
Ghila, Abdurazag M.
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