Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Sayed Ahmed E. Sayed Ahmed"'
Autor:
Sayed Ahmed E. Sayed Ahmed, Mohamed A. Essa, Mohamed A. Abdelatief, Mohamed N. El-Sayed, E. Ibrahim, Mostafa M. Ibrahim
Publikováno v:
Applied Thermal Engineering. 144:1056-1070
In the present study, heat transfer enhancement in circular tubes via internal repeated ring-type ribs is, numerically, investigated and validated with experimental data obtained by Huang et al. (2015). Thermal evaluation is also done for tubes with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a7abe6af27db68ab52404b60c1e8e79
https://doi.org/10.1016/j.applthermaleng.2018.09.018
https://doi.org/10.1016/j.applthermaleng.2018.09.018
Autor:
Sayed Ahmed E. Sayed Ahmed, Mohamed L. Elsayed, Mohamed A. Abdelatief, Ahmed A. Abdelfattah, Wael M. Elwan, E. Ibrahim
Publikováno v:
International Communications in Heat and Mass Transfer. 125:105159
In the present work, the thermal/hydraulic characteristics of a semi-circular cylinder in crossflow of air have been numerically investigated at Reynolds number range between 103 and 104. Various attack angles between −90 and 90° were considered.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7f0444526a33ca46f055ea4a27551dc
https://doi.org/10.1016/j.icheatmasstransfer.2021.105159
https://doi.org/10.1016/j.icheatmasstransfer.2021.105159
Publikováno v:
Heat and Mass Transfer. 54:727-744
The present work evaluates, experimentally and numerically, by the aid of commercial code FLUENT 6.3.26, the effects of relative locations (∆X or ∆Y), heights (hw), and span-angle (θ) of winglet-vortex-generators (WVGs) on thermal-hydraulic perf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b3603aca76a1ae0bc327cb60deecf1e
https://doi.org/10.1007/s00231-017-2164-7
https://doi.org/10.1007/s00231-017-2164-7
Publikováno v:
Journal of Mechanical Science and Technology. 30:2849-2863
A numerical study is conducted to clarify heat transfer characteristics, effectiveness and entropy generation for a bundle of wingshaped-tubes attached to Longitudinal fins (LF) at downstream side. The air-side Rea ranged from 1.8 x 103 to 9.7 x 103.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddfb196d4a6677cd41f7baa648158d8d
https://doi.org/10.1007/s12206-016-0544-4
https://doi.org/10.1007/s12206-016-0544-4
Publikováno v:
American Journal of Construction and Building Materials. 4:61
Corrosion of steel reinforcement is the main damage issue for the efficiency and performance of reinforced concrete (RC) bridge piers located in aggressive environments. In this study, the possibility of strengthening corroded RC bridge piers with hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d977fd2d9cc645cf691d358e15c36cf
https://doi.org/10.11648/j.ajcbm.20200402.14
https://doi.org/10.11648/j.ajcbm.20200402.14
Publikováno v:
Journal of Thermodynamics. 2015:1-16
A numerical study is conducted to clarify fluid-flow characteristics, pressure drop coefficient (Pdc), and the average skin friction coefficient (Cf,m) for wing-shaped-tubes bundle with longitudinal fins at downstream side of the tube using the comme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f9cbf0ed1a09ccae15d633d5fb83d8b
https://doi.org/10.1155/2015/542405
https://doi.org/10.1155/2015/542405
Publikováno v:
Heat and Mass Transfer. 51:1607-1630
The performance of heat exchangers can be improved to perform a certain heat-transfer duty by heat transfer enhancement techniques. Enhancement techniques can be divided into two categories: passive and active. Active methods require external power,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::675fed55041fdec59269287d1842f82a
https://doi.org/10.1007/s00231-015-1669-1
https://doi.org/10.1007/s00231-015-1669-1
Publikováno v:
Heat and Mass Transfer. 51:1001-1016
An experimental and numerical study has been conducted to clarify fluid flow characteristics and pressure drop distributions of a cross-flow heat exchanger employing staggered wing-shaped tubes at different angels of attack. The water-side Rew and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2762eb9a391a7663e9b03809790ef3d8
https://doi.org/10.1007/s00231-014-1473-3
https://doi.org/10.1007/s00231-014-1473-3
Publikováno v:
Heat and Mass Transfer. 50:1091-1102
An experimental and numerical study has been conducted to clarify heat transfer characteristics and effectiveness of a cross-flow heat exchanger employing staggered wing-shaped tubes at different angels of attack. The water-side Rew and the air-side
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e95268e80150bee34afcb5b8b33f294
https://doi.org/10.1007/s00231-014-1323-3
https://doi.org/10.1007/s00231-014-1323-3
Publikováno v:
First International Interactive Symposium on UHPC.
Ultra-high performance fiber-reinforced concrete (UHPC) is a new class of concrete that has been developed in recent years. UHPC results from the addition of either short discrete fibers or continuous long fibers to the cement based matrix. When UHPC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48dcbe01c64c9d1992ba958a92a83216
https://doi.org/10.21838/uhpc.2016.11
https://doi.org/10.21838/uhpc.2016.11