Results 101 to 110 of about 2,352 (253)

Hydrodynamic Performance of Toroidal Propeller Based on Detached Eddy Simulation Method

Journal of Marine Science and Engineering
Toroidal propellers hold significant potential as underwater propulsion systems compared to traditional propellers, primarily due to their unique shape, which effectively reduces and minimizes hydrodynamic noise and enhances structural stability and ...
Pei Xu, Yingchun Guo, Liyu Ye, Kewei Song   +3 more
doaj   +1 more source

Active Electromagnetic Interference Suppression for MRI and Proton Resonance Frequency Shift Thermometry During MRI‐Guided Microwave Ablation

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop a software‐based active electromagnetic interference (EMI) suppression (AES) framework on whole‐body multi‐channel MRI systems for reliable MRI and MR thermometry during MRI‐guided microwave ablation (MWA). Methods In addition to primary imaging coils, an unloaded standard body array coil was positioned outside the imaging ...
Qing Dai, Jason Chiang, Shu‐Fu Shih, Wenqi Zhou, David S. K. Lu, Holden H. Wu   +5 more
wiley   +1 more source

Investigation of Turbulent Tip Leakage Vortex in an Axial Water Jet Pump with Large Eddy Simulation

, 2012
Detailed steady and unsteady numerical studies were performed to investigate tip clearance flow in an axial water jet pump. The primary objective is to understand physics of unsteady tip clearance flow, unsteady tip leakage vortex, and cavitation ...
Hah, Chunill, Katz, Joseph
core  

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

Journal of Field Robotics, EarlyView.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone, Mohammed Anteet, Pawandeep S. Matharu, Yara Almubarak   +3 more
wiley   +1 more source

The Internal Structure of the Tip Leakage Vortex Within the Rotor of an Axial Waterjet Pump

, 2011
The complex flow field in the tip region of a turbomachine rotor, including the tip leakage flow and tip leakage vortex (TLV), has been studied for decades. Yet many associated phenomena are still not understood.
Rinaldo L. Miorini, Joseph Katz, Huixuan Wu   +2 more
core   +1 more source

Effects of casing motion on tip leakage flow and film-cooling effectiveness of squealer tips

Journal of Thermal Science and Technology, 2017
A comparative investigation of leakage flow and film-cooling characteristics on different squealer tips is conducted under the conditions of stationary and moving casing. Firstly, the numerical method used in the calculations has been verified. Then, the
Fengna CHENG, Haiping CHANG, Jingyang ZHANG, Jingzhou ZHANG   +3 more
doaj   +1 more source

Influence of blade tip rounding on tip leakage vortex cavitation of axial flow pump

IOP Conference Series: Materials Science and Engineering, 2013
Tip leakage flow in axial flow pumps is mainly caused by the tip clearance, which is the main cause of tip leakage vortex cavitation and blade tip cavitation erosion. In order to improve tip clearance flow and reduce TLV cavitation, four schemes were adopted to the round blade tip.
S Q Wu, W D Shi, D S Zhang, J Yao, C Cheng   +4 more
openaire   +1 more source

Nanoelectronic Detection of Opioids: Machine Learning‐Powered Screening With Carbon Nanotube Field‐Effect Transistor Sensor Array

Small, EarlyView.
A carbon nanotube field‐effect transistor (NTFET) sensor array is constructed to screen different opioids with machine learning models. Codeine, fentanyl, hydrocodone, and morphine are tested using the NTFET sensor array and classified with both conventional supervised learning models and deep learning models.
Zhengru Liu, Mehdy Dousty, Wenting Shao, Jieyu Wang, Samia Afrin, Wuqi Li, Ervin Sejdić, Alexander Star   +7 more
wiley   +1 more source

Investigation of hydraulic transient flow and dynamic response performance of axial pump based on novel vibration signals characteristics and numerical analyses

Alexandria Engineering Journal
Simulation studies were conducted to investigate structure of internal flow and pulsation in pressure properties of pumps under different flow circumstances.
Ahmed Ramadhan Al-Obaidi, Anas Alwatban
doaj   +1 more source

Bath Vibration During Open Eye Formation in a Physical Model of a Steelmaking Ladle

steel research international, EarlyView.
Using a physical model, this study shows that vibration measurements reliably predict open eye size in steelmaking ladles, offering a practical alternative to visual monitoring. Vessel vibrations stabilize faster than the open eye, except at high frequencies near the bottom.
Mika Pylvänäinen, Juhani Nissilä, Ville‐Valtteri Visuri, Aki Sorsa, Matias Hauru, Jouni Laurila, Toni Liedes   +6 more
wiley   +1 more source