Results 21 to 30 of about 33,404 (309)

Stochastic axial compressor variable geometry schedule optimisation [PDF]

, 2011
The design of axial compressors is dictated by the maximisation of flow efficiency at on design conditions whereas at part speed the requirement for operation stability prevails.
Arias, M., Gallar, L., Pachidis, Vassilios, Singh, R.   +3 more
core   +1 more source

Quasi-2D Performance Analysis for Axial Compressors Based on Time-Marching Method

Xibei Gongye Daxue Xuebao, 2020
In order to get a fast performance analysis tool for multi-stage axial compressors, a quasi-two dimensional analysis model based on time-marching method is developed in this paper.

doaj   +1 more source

An Evaluation of Passive Wall Treatment with Circumferential Grooves at the Casing of the First and Second Blade Rotor Rows of a High-Performance Multi-Stage Axial Compressor

Aerospace
The internal losses in the tip clearance region strongly influence the compressor performance and its operational range. Previous research proved that passive wall treatments with circumferential grooves in axial compressors effectively increase the ...
Ruben Bruno Diaz, Jesuino Takachi Tomita, Cleverson Bringhenti, Franco Jefferds dos Santos Silva, Diogo Ferraz Cavalca   +4 more
doaj   +1 more source

Stability management of high speed axial flow compressor stage through axial extensions of bend skewed casing treatment

Propulsion and Power Research, 2016
This paper presents the experimental results to understand the performance of moderately loaded high speed single stage transonic axial flow compressor subjected to various configurations of axial extensions of bend skewed casing treatment with moderate ...
DilipkumarBhanudasji Alone, S. Satish Kumar, Shobhavathy M. Thimmaiah, Janaki Rami Reddy Mudipalli, A.M. Pradeep, Srinivasan Ramamurthy, Venkat S. Iyengar   +6 more
doaj   +1 more source

Numerical Investigation on a Axial Slot Casing Treatment of a Large Circumferential Interval and Small Opening Area

Energies, 2021
Axial slot casing treatment is a common method to extend the stall margin of a compressor. Based on the mechanism of unsteady flow control, this paper redesigns axial slots with large circumferential interval and small opening area. To test the effect of
Zepeng Liu, Guoping Huang, Omer Musa
doaj   +1 more source

A comprehensive review of numerical and experimental techniques for enhancing axial flow compressor performance under various flow conditions

Cogent Engineering
The fan, compressors and turbines are the main rotating components of a modern aircraft turbofan engine. The stable and safe performance of the propulsion system always depends on the inlet and engine compatibility.
Vishwaretha K. R., Sudheendra Prabhu K., Anand S. N., Srinivas G   +3 more
doaj   +1 more source

Natural Products as Geroprotective Modulators in Diabetic Nephropathy: A Mechanistic Framework Integrating Aging Hallmarks and the AMPK–SIRT1–Nrf2 Axis

Aging and Cancer, EarlyView.
Natural products target the aging kidney in diabetic nephropathy by restoring the AMPK–SIRT1–Nrf2 axis, reducing oxidative stress, inflammation, fibrosis, and cellular senescence while enhancing mitochondrial biogenesis and antioxidant defenses.
Sherif Hamidu, Latif Adams, Eunice Ampem‐Danso, Justice Kumi, Abigail Aning, Fatima Hamidu, Mustapha Abdul Mumin Mohammed, Ayuba Nii Darku Ankrah, Seth Kwabena Amponsah   +8 more
wiley   +1 more source

The investigation of absolute flow non-uniform velocity distributions influence at the centrifugal compressor axial radial impeller inlet using numerical calculation methods in ANSYS CFX [PDF]

E3S Web of Conferences, 2019
Currently, methods of numerical modelling are widely used. They are especially widely used in the design of turbo compressors. For the specific task of designing new flowing parts of a centrifugal compressor, it is not recommended to deviate from the ...
Rakhmanina L.A., Zuev A.V., Petrov A. Yu., Aksenov A.A., Nguyen Minh Hai   +4 more
doaj   +1 more source

Spinal Cord Infarction Versus Idiopathic Transverse Myelitis: Clinical, Radiological, and Functional Insights From a Retrospective Cohort Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Spinal cord infarction (SCI) is a rare but devastating myelopathy, characterized by a high disability rate and an unfavorable prognosis. It has often been underdiagnosed and misdiagnosed as idiopathic transverse myelitis (ITM). This study aimed to describe the clinical features, radiological biomarkers, treatments, and functional ...
Zeqiang Ji, Jianlong Zhang, Yiming Shi, Shiyu Shan, Yang Du, Guangshuo Li, Ying Jin, Yani Zhang, Chuanying Wang, Yijun Lin, Yuhao Guo, Decai Tian, Xingquan Zhao, Tian Song   +13 more
wiley   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source