Results 71 to 80 of about 177,184 (308)

Performance of turbulence and cavitation models in prediction of incipient and developed cavitation [PDF]

, 2017
The aim of this article is to assess the impact of turbulence and cavitation models on the prediction of diesel injector nozzle flow. Two nozzles are examined, an enlarged one, operating at incipient cavitation, and an industrial injector tip, operating ...
Afzal H, Brennen C, Caupin F, Coutier-Delgosha O, Edelbauer W, Franc J-P, Homa Naseri, Manolis Gavaises, Okabayashi K, Phoevos Koukouvinis, Reboud J-L, Sagaut P, Schmidt D, Schnerr GH, Versteeg H, Wilcox D, Zwart PJ   +16 more
core   +1 more source

A Hydrodynamic Bioreactor for High‐Yield Production of Extracellular Vesicles from Stem Cell Spheroids with Defined Cargo Profiling

Advanced Science, EarlyView.
This study harnesses hydrodynamic flows to generate, confine and stimulate stem cell spheroids, enabling the large‐scale production of extracellular vesicles (EVs). This innovative method not only streamlines spheroid formation and subsequent EV release in a single, integrated process, but also ensures the generation of EVs with enhanced biological ...
Solène Lenoir, Elliot Thouvenot, Giacomo Gropplero, Léonie Dec, Damarys Loew, Clotilde Théry, Jose E Perez, Claire Wilhelm   +7 more
wiley   +1 more source

Numerical Analysis of a Hydrodynamic Herringbone Grooved Journal Bearing

Journal of Engineering, 2020
In hydrodynamic lubrication, at very high rotational speed, the phenomenon of axial fluid leakage is often present. This can involve an increase of shear stress in the contact and consequently a considerable increase of the temperature.
D. Souchet, A. Senouci, H. Zaidi, M. Amirat   +3 more
doaj   +1 more source

Modeling Surface Riblets Skin Friction Reduction Effect with the Use of Computational Fluid Dynamics

Chemical Engineering Transactions, 2020
Towards the minimization of fuel consumption and aicraft emissions reduction, many disruptive technologies have been proposed in aviation industry regarding the improvement of aircraft aerodynamic performance.
Chris Bliamis, Zinon Vlahostergios, Dimitrios Misirlis, Kyros Yakinthos   +3 more
doaj   +1 more source

Improvement of the second- and third-moment modeling of turbulence: A study of Reynolds-stress closure model [PDF]

Four parts of the Reynolds-stress closure modeling are reported: (1) improvement of the k and epsilon equaitons; (2) development of the third-moment transport equation; (3) formulation of the diffusion coefficient of the momentum equation by using the ...
Amano, R. S., Goel, P.
core   +1 more source

High Reynolds Channel Flows: Variable curvature [PDF]

, 2011
Two-dimensional laminar flow, at high Reynolds number Re, of an incompressible Newtonian fluid in a curved channel connected to 2 fitting tangent straight channels at its upstream and downstream extremities is considered. The Successive Complementary
Cathalifaud, Patricia, Cousteix, Jean, Mauss, Jacques, Zagzoule, Mokhtar   +3 more
core   +1 more source

Reconfigurable Acoustofluidic Microvortices for Selective Microcargo Delivery

Advanced Science, EarlyView.
This work introduces a frequency‐encoded, reconfigurable acoustofluidic system that overcomes the low throughput and poor selectivity of conventional micro‐delivery methods. By exploiting discrete microbubble resonances to program adaptive microvortex modes, the platform enables real‐time switching and selective guidance of microscale payloads through ...
Lei Wang, Yiqiang Wu, Yiyang Tang, Hui Wei, Tianshi Lyu, Xin Zhang, Tian‐Yun Huang   +6 more
wiley   +1 more source

Computational and Experimental Investigations of Separation Control of LP Turbine Cascade Blades using Gurney Flaps

Journal of Applied Fluid Mechanics, 2021
The paper reports computational and experimental investigations carried out to control of laminar flow separation in LP turbine cascade blades at low Reynolds numbers.
G. Tatpatti, N. Sitaram, K. Viswanath
doaj  

Effect of roughness on mean flow properties for turbulent boundary layer

Nihon Kikai Gakkai ronbunshu, 2016
The roughness sublayer beneath a turbulent boundary layer has been investigated analytically and experimentally, and the effect has been discussed on the mean velocity profile throughout the layer.
Takatsugu KAMEDA, Shinsuke MOCHIZUKI, Hideo OSAKA   +2 more
doaj   +1 more source

Progress in turbulence modeling for complex flow fields including effects of compressibility [PDF]

Two second-order-closure turbulence models were devised that are suitable for predicting properties of complex turbulent flow fields in both incompressible and compressible fluids.
Rubesin, M. W., Wilcox, D. C.
core   +1 more source