Results 31 to 40 of about 16,913 (164)

Clearance flow patterns and pressure distribution of a pump-turbine: Measurement and simulation of a rotating disk flow

Frontiers in Energy Research, 2022
The clearance flow patterns and pressure distribution determine the clearance axial hydraulic thrust of a pump turbine, which has a substantial impact on the unit axial imbalance.
Xiaoxia Hou, Herui Liu, Yongguang Cheng, Ke Liu, Demin Liu, Hongyu Chen   +5 more
doaj   +1 more source

On the Viscous Ringed Disk Evolution in the Kerr Black Hole Spacetime

Universe
Supermassive black holes (SMBHs) are observed in active galactic nuclei interacting with their environments, where chaotical, discontinuous accretion episodes may leave matter remnants orbiting the central attractor in the form of sequences of orbiting ...
Daniela Pugliese, Zdenek Stuchlík, Vladimir Karas   +2 more
doaj   +1 more source

Effects of the rotation number on flow and heat transfer in contra-rotating disk cavity with superposed flow

Advances in Mechanical Engineering, 2019
The turbulent fluid flow and convective heat transfer in counter-rotating disk cavity with central axial air inflow and radial air outflow are numerically studied based on the finite volume method.
Shu-xian Chen, Jing-zhou Zhang
doaj   +1 more source

Photocatalytic removal of phenazopyridine in a rotating disk photoreactor: Investigation of operational parameters

آلودگی‌های محیطی و توسعه پایدار شهری
In this study, the efficiency of a rotating disk photoreactor for the removal of phenazopyridine (PhP), a drug-resistant contaminant, using the UV/TiO2 process was investigated.
Maryam Kamali-Alamdari
doaj   +1 more source

Non-Darcy flow of water-based single (SWCNTs) and multiple (MWCNTs) walls carbon nanotubes with multiple slip conditions due to rotating disk

Results in Physics, 2018
This article investigate additional physical results about the enhancement of thermophysical characteristics of carbon-water nanotube using engine and kerosene oils due to rotating porous disk. Flow in porous space is characterized by non-Darcy relation (
Tasawar Hayat, Tehreem Nasir, Muhammad Ijaz Khan, Ahmed Alsaedi   +3 more
doaj   +1 more source

Radiative flow due to stretchable rotating disk with variable thickness

Results in Physics, 2017
Present article concerns with MHD flow of viscous fluid by a rotating disk with variable thickness. Heat transfer is examined in the presence of thermal radiation. Boundary layer approximation is applied to the partial differential equations.
Tasawar Hayat, Sumaira Qayyum, Maria Imtiaz, Ahmed Alsaedi   +3 more
doaj   +1 more source

Normal impingement of hybrid nanofluid over heated rotating disk: Calculations of wall stresses and pressure distribution

Case Studies in Thermal Engineering
Numerous practical applications involve rotational flows over rotating disks, such as turbine disks, substrate disks in chemical mixing processes, and rotating disk electrodes.
Awais Ahmed, Israr Ali Khan, N. Ameer Ahammad, Esmail Alshaban, Walid Abdelfattah, Mohamed Abdelghany Elkotb   +5 more
doaj   +1 more source

Slip flow by a variable thickness rotating disk subject to magnetohydrodynamics

Results in Physics, 2017
Objective of the present study is to determine the characteristics of magnetohydrodynamic flow by a rotating disk having variable thickness. At the fluid–solid interface we consider slip velocity. The governing nonlinear partial differential equations of
Maria Imtiaz, Tasawar Hayat, Ahmed Alsaedi, Saleem Asghar   +3 more
doaj   +1 more source

Radial Versus Cartesian Control Strategies to Stabilize the Nonlinear Whirling Motion of the Six-Pole Rotor-AMBs

IEEE Access, 2020
Rotor active magnetic bearings system is the most efficient supporting technique of high-speed rotating machinery. This work aims to explore the dynamical behaviors of the 6-pole rotor active magnetic bearings system for the first time.
Nasser A. Saeed, Emad Mahrous Awwad, Mohammed A. El-Meligy, Emad S. Abouel Nasr   +3 more
doaj   +1 more source

Rotating minidisk–disk electrodes

Electrochemistry Communications, 2007
Rotating minidisk-disk electrode (RMDDE) was developed by replacing ring electrode of rotating ring-disk electrode (RRDE) with a minidisk electrode. Its applications were demonstrated by studying electrochemical reactions of ferricyanide and divalent copper. The replacement of ring electrode by minidisk electrode results in following advantages. First,
Shuang Han, Junfeng Zhai, Lihong Shi, Xiaoqing Liu, Wenxin Niu, Haijuan Li, Guobao Xu   +6 more
openaire   +1 more source