Aerothermal Optimization of Bladeless TurbinesSource: Journal of Engineering for Gas Turbines and Power:;2021:;volume( 143 ):;issue: 003::page 031023-1DOI: 10.1115/1.4049355Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The 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.
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contributor author | Braun, James | |
contributor author | Paniagua, Guillermo | |
contributor author | Falempin, Francois | |
date accessioned | 2022-02-05T22:20:09Z | |
date available | 2022-02-05T22:20:09Z | |
date copyright | 3/1/2021 12:00:00 AM | |
date issued | 2021 | |
identifier issn | 0742-4795 | |
identifier other | gtp_143_03_031023.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4277358 | |
description abstract | The 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. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Aerothermal Optimization of Bladeless Turbines | |
type | Journal Paper | |
journal volume | 143 | |
journal issue | 3 | |
journal title | Journal of Engineering for Gas Turbines and Power | |
identifier doi | 10.1115/1.4049355 | |
journal fristpage | 031023-1 | |
journal lastpage | 031023-11 | |
page | 11 | |
tree | Journal of Engineering for Gas Turbines and Power:;2021:;volume( 143 ):;issue: 003 | |
contenttype | Fulltext |