Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Mohammad Reza Mahpeykar"'
Publikováno v:
Journal of Applied and Computational Mechanics, Vol 9, Iss 2, Pp 332-345 (2023)
This study evaluates the performance of the SLAU, AUSM+UP upwind schemes, and CUSP artificial dissipation scheme for the flow through the convergent-divergent nozzles and turbine stator blades under different pressure ratios by developing an in-house
Externí odkaz:
https://doaj.org/article/27378e1ad0ea48feb141870b60ea11d7
Publikováno v:
Energies, Vol 10, Iss 9, p 1285 (2017)
In the present research, considering the importance of desirable steam turbine design, improvement of numerical modeling of steam two-phase flows in convergent and divergent channels and the blades of transonic steam turbines has been targeted. The f
Externí odkaz:
https://doaj.org/article/0685b64403314288bf5b31155d368f92
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 147:3803-3813
Since turbine blades and supersonic nozzles expand under unique conditions, vapor may become super-cooled and afterward wet steam. Wetness fraction (WF) and Droplet radius (r) are two remarkably significant variables in designing and operating wet st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18f13712e906845a8b3f902a521f9c41
https://doi.org/10.1007/s10973-020-10526-z
https://doi.org/10.1007/s10973-020-10526-z
Publikováno v:
European Journal of Mechanics - B/Fluids. 80:32-41
In this research, the effect of curvature radius of convex target plates on the radius of formed circular hydraulic jump is investigated using experimental investigation and numerical modeling. Ethylene glycol with constant density and viscosity is u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f33dc5dcb9901f632d39130dd665c55
https://doi.org/10.1016/j.euromechflu.2019.09.018
https://doi.org/10.1016/j.euromechflu.2019.09.018
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 137:2121-2134
During rapid expansion in supersonic nozzles and turbine blades, under special conditions, steam may become supercooled vapor, and the heat release rate ( $$\dot{Q}$$ ) due to phase change is substantial. Droplet radius (r) and wetness fraction (WF)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e764f2ab7a19306a5ab83dda7bb391a
https://doi.org/10.1007/s10973-019-08108-9
https://doi.org/10.1007/s10973-019-08108-9
Publikováno v:
Journal of Applied Fluid Mechanics. 11:1691-1701
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c061d3bab7abb1bfcf4d4859a95f0c6
https://doi.org/10.29252/jafm.11.06.29051
https://doi.org/10.29252/jafm.11.06.29051
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 133:1023-1039
Rapid expansion and supercooling of dry vapor in low-pressure steam turbines trigger nucleation phenomenon. Subsequently, following the occurrence of vapor condensation, a vapor–liquid two-phase flow is established. Entropy generation mainly by con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6494687ab80f9d28ab623753e28cb603
https://doi.org/10.1007/s10973-018-7126-x
https://doi.org/10.1007/s10973-018-7126-x
Publikováno v:
Energy. 147:701-714
In the last stages of steam turbines, the existence of the liquid phase results in wetness losses. This study intends to analyze the effect of volumetric heating on condensing steam flow in the stationary cascade of turbine blades and the losses asso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4e4aa3c49c9e0357867f283a6afbf03
https://doi.org/10.1016/j.energy.2018.01.097
https://doi.org/10.1016/j.energy.2018.01.097
Publikováno v:
Numerical Heat Transfer, Part B: Fundamentals. 72:325-347
In the present research, considering the importance of appropriate design of steam turbines, a combination of scalar and convective upwind split pressure (CUSP) with known value of z schemes is use...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d388d0e9cae0bc2fdb8c30ed36159b27
https://doi.org/10.1080/10407790.2017.1400319
https://doi.org/10.1080/10407790.2017.1400319
Publikováno v:
The European Physical Journal Plus. 134
The flow of steam, at the Wilson point, begins to condensate through nucleation, and its non-equilibrium conditions are suppressed by forming the critical droplets that decrease the Gibbs energy, and then the condensation shock occurs. Droplet radius
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0c9d0a093f7acdbb931bc26f5a32d20
https://doi.org/10.1140/epjp/i2019-12416-6
https://doi.org/10.1140/epjp/i2019-12416-6