Zobrazeno 1 - 10
of 152
pro vyhledávání: '"ElNahhas, A."'
Wall-modeled large-eddy simulations (WMLES) are conducted for the flow over the Sandia Axisymmetric Transonic Bump (ATB) at bump chord Reynolds number, Re = 1x10^6 and Mach number, Ma = 0.875. Utilizing various subgrid-scale and wall models, comparis
Externí odkaz:
http://arxiv.org/abs/2305.05786
Publikováno v:
In Sleep Medicine July 2024 119:258-266
Autor:
Elnahhas, Ahmed, Johnson, Perry L.
Turbulence enhances the wall shear stress in boundary layers, significantly increasing the drag on streamlined bodies. Other flow features such as freestream pressure gradients and streamwise boundary layer growth also strongly influence the skin fri
Externí odkaz:
http://arxiv.org/abs/2107.03043
Publikováno v:
Annual Research Briefs 2020, Center for Turbulence Research, Stanford University
A promising and cost-effective method for numerical simulation of high Re wall-bounded flows is wall-modeled large-eddy simulation. Most wall models are formulated from the Reynolds-averaged Navier-Stokes equations (RANS). These RANS-based wall model
Externí odkaz:
http://arxiv.org/abs/2101.00528
Publikováno v:
Annual Research Briefs 2019, Center for Turbulence Research, Stanford University
We study the transition to turbulence from the perspective of the velocity gradient tensor dynamics. Our work is motivated by the observation of nonlinear structures emerging during transition, as revealed by vortex identifiers such as the Q-criterio
Externí odkaz:
http://arxiv.org/abs/2001.06919
Autor:
Khaled ABDELAAL, Salman ALAMREY, Kotb A. ATTIA, Mohamed ELROBH, Nihal ELNAHHAS, Ahmed ABOU EL-YAZIED, Mervat A.R. IBRAHIM
Publikováno v:
Notulae Botanicae Horti Agrobotanici Cluj-Napoca, Vol 50, Iss 2 (2022)
Drought is one of the most harmful abiotic stresses in arid and semiarid regions, so, field experiments were performed to examine biochar impact (15 or 20 t ha−1) on soil properties, physiological, morphological, and yield of barley under drought c
Externí odkaz:
https://doaj.org/article/5da12a2c3c1e444cb290fd96b078cef2
Publikováno v:
In Journal of Chromatography B 1 January 2020 1136
Autor:
Yasmine Yousra Sadok Cherif, Chakib Djeffal, Hashem Abu Serhan, Ahmed Elnahhas, Hebatallah Yousef, Basant E. Katamesh, Basel Abdelazeem, Abdelaziz Abdelaal
Publikováno v:
Vaccines, Vol 11, Iss 1, p 69 (2022)
Numerous complications following COVID-19 vaccination has been reported in the literature, with an increasing body of evidence reporting vaccination-associated uveitis (VAU). In this systematic review, we searched six electronic databases for article
Externí odkaz:
https://doaj.org/article/aea397c9c40c4494905745ebd9b08951
Autor:
Yazdandoost, Fatemeh, Sadeghi, Omidreza, Bakhtiari-Nejad, Marjan, Elnahhas, Ahmed, Shahab, Shima, Mirzaeifar, Reza
Publikováno v:
In Mechanics of Materials October 2019 137
Autor:
Mostafa, Ahmad E.1, Elnahhas, Nehal Badr1, El-Menyawi, Khaled1, Nozahi, Mostafa El1 mostafa_elnozahi@hotmail.com
Publikováno v:
Egyptian Journal of Hospital Medicine. Oct2022, Vol. 89, p5379-5385. 7p.