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contributor authorBraun, James
contributor authorPaniagua, Guillermo
contributor authorFalempin, Francois
date accessioned2022-02-05T22:20:09Z
date available2022-02-05T22:20:09Z
date copyright3/1/2021 12:00:00 AM
date issued2021
identifier issn0742-4795
identifier othergtp_143_03_031023.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4277358
description abstractThe harnessing of mechanical power from supersonic flows is constrained by physical limitations and substantial aerodynamic losses. Bladeless axial turbines are a viable alternative to extract power in such harsh conditions without restricting the operating conditions. In this paper, we present a shape optimization of the wavy surface of bladeless turbines to maximize the power extraction, while minimizing convective heat flux and pressure losses. First, a baseline geometry was defined and an experimental campaign was carried out on the baseline wavy surface of the bladeless turbine at supersonic conditions. Pressure, heat flux, and skin friction measurements were compared with the Reynolds averaged Navier–Stokes results. Afterward, an evaluation routine which consisted of the geometry and grid generation, solving, and postprocessing was implemented within a multi-objective optimization routine to maximize the pressure force and minimize heat flux and pressure loss. Finally, a three-dimensional assessment in terms of power, heat load, and pressure drop was performed for the best performing geometry with the commercial solver cfd++ of Metacomp.
publisherThe American Society of Mechanical Engineers (ASME)
titleAerothermal Optimization of Bladeless Turbines
typeJournal Paper
journal volume143
journal issue3
journal titleJournal of Engineering for Gas Turbines and Power
identifier doi10.1115/1.4049355
journal fristpage031023-1
journal lastpage031023-11
page11
treeJournal of Engineering for Gas Turbines and Power:;2021:;volume( 143 ):;issue: 003
contenttypeFulltext


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