Results 31 to 40 of about 266,110 (298)

Progress on the hydraulic measures for grid slotting and fracking to enhance coal seam permeability

International Journal of Mining Science and Technology, 2017
A method of hydraulic grid slotting and hydraulic fracturing was proposed to enhance the permeability of low permeability coal seam in China. Micro-structural development and strength characteristics of coal were analysed to set up the failure criterion ...
Yiyu Lu, Zhaolong Ge, Feng Yang, Binwei Xia, Jiren Tang   +4 more
doaj   +1 more source

A Numerical Simulation of the Underwater Supersonic Gas Jet Evolution and Its Induced Noise

Applied Sciences, 2023
To explore the complex flow field and noise characteristics of underwater high-speed gas jets, the mixture multiphase model, large eddy simulation method, and Ffowcs Williams–Hawking (FW–H) acoustic model were used for simulations, and the numerical ...
Wei Yu, Baoshou Wang, Chun Zhang
doaj   +1 more source

Abrasive water jet drilling of advanced sustainable bio-fibre-reinforced polymer/hybrid composites : a comprehensive analysis of machining-induced damage responses [PDF]

, 2018
This paper aims at investigating the effects of variable traverse speeds on machining-induced damage of fibre-reinforced composites, using the abrasive water jet (AWJ) drilling.
A Alberdi, A Alberdi, A Hascalik, A Hascalik, A Hejjaji, AA Shaikh, B KC, DF Liu, DJ McGill, DJ Thomas, DJ Thomas, E Oho, FA Almansour, FL Chen, G Fowler, H Heidarya, H Ho-Cheng, H Hocheng, HN Dhakal, HN Dhakal, Hom Nath Dhakal, I Shyha, J Flynn, J Montesano, James R. Smith, JC Crocker, JK Patel, K Phapale, M Ramulu, Marco Paggi, MM Thwe, MMW Irina, N Ramesha, NE Hajj, PD Unde, R Selvam, S Kalirasu, S Nunna, Saheed Olalekan Ojo, Sikiru Oluwarotimi Ismail, SO Ismail, SO Ismail, SO Ismail, SP Jani, YW Seo   +44 more
core   +3 more sources

An easterly tip jet off Cape Farewell, Greenland. I: Aircraft observations [PDF]

, 2009
An easterly tip jet event off Cape Farewell, Greenland, is described and analysed in considerable detail. In Part I of this study (this paper) comprehensive aircraft-based observations are described, while in Part II of this study numerical simulations ...
Andreas, Atkinson, Barstad, Brümmer, Chelton, Chelton, Doyle, Egger, Godske, Hay, JPL, Martin, Moore, Moore, Moore, Ohigashi, Orr, Outten, Parish, Parish, Persson, Petersen, Petersen, Petersen, Petersen, Pickart, Pierrehumbert, Renfrew, Renfrew, Renfrew, Revell, Sampe, Schween, Schwerdtfeger, Skeie, Smith, Stull, VÃ¥ge, Ãlafsson, Ãlafsson   +39 more
core   +1 more source

Influence of Processing Parameters on Coating Removal for High Pressure Water Jet Technology Based on Wall-Climbing Robot

Applied Sciences, 2020
The shipbuilding industry is very important for many countries. As an essential process in the shipbuilding industry, surface preparation (or coating removal) is gaining more and more attention.
Feifei Zhang, Xuerong Sun, Zhanpeng Li, Imran Mohsin, Yanan Wei, Kai He   +5 more
doaj   +1 more source

An investigation of a super-Earth exoplanet with a greenhouse-gas atmosphere using a general circulation model

, 2012
We use the Massachusetts Institute of Technology general circulation model (GCM) dynamical core, in conjunction with a Newtonian relaxation scheme that relaxes to a gray, analytical solution of the radiative transfer equation, to simulate a tidally ...
Madhusudhan, Nikku, Michaels, Timothy I., Zalucha, Angela M.   +2 more
core   +1 more source

Effect of steam addition on the flow field and NOx emissions for Jet-A in an aircraft combustor [PDF]

, 2016
The steam injection technology for aircraft engines is gaining rising importance because of the strong limitations imposed by the legislation for NOx reduction in airports.
Hu, Chunbo, Nikolaidis, Theoklis, Pilidis, Pericles, Xue, Rui   +3 more
core   +1 more source

Is Young's Modulus a Critical Coating Property Determining Fouling‐Release Performance of Marine Coatings?

Advanced Engineering Materials, EarlyView.
The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal, Andreas Brinkmann, Andreas Hartwig   +2 more
wiley   +1 more source

Cavitation Induction by Projectile Impacting on a Water Jet [PDF]

, 2019
The present paper focuses on the simulation of the high-velocity impact of a projectile impacting on a water-jet, causing the onset, development and collapse of cavitation. The simulation of the fluid motion is carried out using an explicit, compressible,
Farhat, M., Gavaises, M., Koukouvinis, P., Kyriazis, N., Stavropoulos Vasilakis, E.   +4 more
core   +1 more source

An Inkjet‐Printed Platinum‐Based Temperature Sensing Element on Polyimide Substrates

Advanced Engineering Materials, EarlyView.
An inkjet‐printed, meander‐structured, nanoparticle platinum‐based resistive temperature sensors on polyimide substrates are demonstrated as proof‐of‐concept. Optimized sintering at 250°C enables stable conductive structures. The Pt100‐ and Pt1000‐type sensors exhibit linear resistance–temperature characteristics with stable TCR in the 20°C–80°C range,
Shawon Alam, Thomas Kister, Alexander Scholz, Sophie Sauva, Makara Lay, Tobias Kraus, Jasmin Aghassi‐Hagmann   +6 more
wiley   +1 more source