John Jasa
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View article: A comparison of eight optimization methods applied to a wind farm layout optimization problem
A comparison of eight optimization methods applied to a wind farm layout optimization problem Open
Selecting a wind farm layout optimization method is difficult. Comparisons between optimization methods in different papers can be uncertain due to the difficulty of exactly reproducing the objective function. Comparisons by just a few aut…
View article: Comment on wes-2022-90
Comment on wes-2022-90 Open
Abstract. Selecting a wind farm layout optimization method is difficult. Comparisons between optimization methods in different papers can be uncertain due to the difficulty of exactly reproducing the objective function. Comparisons by just…
View article: A Comparison of Eight Optimization Methods Applied to a Wind Farm Layout Optimization Problem
A Comparison of Eight Optimization Methods Applied to a Wind Farm Layout Optimization Problem Open
Selecting a wind farm layout optimization method is difficult. Comparisons between optimization methods in different papers can be uncertain due to the difficulty of exactly reproducing the objective function. Comparisons by just a few aut…
View article: Progress in Optimal Blade Design Considering Dynamics of Unsteady Floating Platforms
Progress in Optimal Blade Design Considering Dynamics of Unsteady Floating Platforms Open
Offshore turbines installed on floating platforms experience significantly different dynamics due to a combination of wind and wave-induced motions relative to their fixed-bottom or onshore counterparts. Even in normal sea states, unsteady…
View article: Optimal Wind Turbine Design for H2 Production
Optimal Wind Turbine Design for H2 Production Open
NREL and industrial partners GE and Nel seek to advance affordable green hydrogen production by optimizing wind turbine design specifically for hydrogen production and validating designs using NREL's ARIES facilities. This project will cou…
View article: Enabling Innovation in Wind Turbine Design Using Artificial Intelligence
Enabling Innovation in Wind Turbine Design Using Artificial Intelligence Open
The Inverse Network Transformations for Efficient Generation of Robust Airfoil and Turbine Enhancements (INTEGRATE) project is developing a new inverse-design capability for wind turbine rotors using invertible neural networks. This artifi…
View article: Effectively using multifidelity optimization for wind turbine design
Effectively using multifidelity optimization for wind turbine design Open
Wind turbines are complex multidisciplinary systems that are challenging to design because of the tightly coupled interactions between different subsystems. Computational modeling attempts to resolve these couplings so we can efficiently e…
View article: Wind turbine blade design with airfoil shape control using invertible neural networks
Wind turbine blade design with airfoil shape control using invertible neural networks Open
Wind turbine blade design is a highly multidisciplinary process that involves aerodynamics, structures, controls, manufacturing, costs, and other considerations. More efficient blade designs can be found by controlling the airfoil cross-se…
View article: Floating wind turbine control optimization
Floating wind turbine control optimization Open
We present a framework for optimizing the control parameters of floating offshore wind turbines (FOWTs). The framework combines aeroelastic simulations with a systems engineering model and control software. In an example of the optimizatio…
View article: Efficient Loads Surrogates for Waked Turbines in an Array
Efficient Loads Surrogates for Waked Turbines in an Array Open
Accurately and efficiently predicting wind turbine structural loading is a crucial step in wind farm design. Without considering structural loading, wind farm optimization could negatively impact turbine fatigue and ultimate loads, especia…
View article: Comment on wes-2022-7
Comment on wes-2022-7 Open
Wind plant blockage is a phenomenon where the presence of a large wind farm creates a disturbance to air flow external to the farm itself that is not accounted for by wake effects. This is typically manifested as a slowdown in wind velocit…
View article: Influence of wind turbine design parameters on linearized physics-based models in OpenFAST
Influence of wind turbine design parameters on linearized physics-based models in OpenFAST Open
While most physics involved in wind energy are nonlinear, linearization of the underlying nonlinear wind system equations is often important for understanding the system response and exploiting well-established methods and tools for analyz…
View article: Comment on wes-2021-56
Comment on wes-2021-56 Open
Abstract. Wind turbines are complex multidisciplinary systems that are challenging to design because of the tightly coupled interactions between different subsystems. Computational modeling attempts to resolve these couplings so we can eff…
View article: Quantifying the effect of blockage for wind farm layout optimization
Quantifying the effect of blockage for wind farm layout optimization Open
Wind plant blockage is a phenomenon where the presence of a large wind farm creates a disturbance to air flow external to the farm itself that is not accounted for by wake effects. This is typically manifested as a slowdown in wind velocit…
View article: Comment on wes-2021-73
Comment on wes-2021-73 Open
Abstract. While most physics involved in wind energy are nonlinear, linearization of the underlying nonlinear wind system equations is often important for understanding the system response and exploiting well-established methods and tools …
View article: Progress on Optimizing Wind Farms and Rotor Designs Using Adjoints
Progress on Optimizing Wind Farms and Rotor Designs Using Adjoints Open
Modern wind plants are increasingly tasked with multiple performance objectives. In addition to designing plants that maximize power output and minimize the levelized cost of energy (LCOE), the design and operation of wind plants is increa…
View article: Comment on wes-2021-73
Comment on wes-2021-73 Open
Abstract. While most physics involved in wind energy are nonlinear, linearization of the underlying nonlinear wind-system equations is often important for understanding the system response and exploiting well-established methods and tools …
View article: Influence of Wind Turbine Design Parameters on Linearized Physics-Based Models in OpenFAST
Influence of Wind Turbine Design Parameters on Linearized Physics-Based Models in OpenFAST Open
While most physics involved in wind energy are nonlinear, linearization of the underlying nonlinear wind-system equations is often important for understanding the system response and exploiting well-established methods and tools for analyz…
View article: Effectively using multifidelity optimization for wind turbine design
Effectively using multifidelity optimization for wind turbine design Open
Wind turbines are complex multidisciplinary systems that are challenging to design because of the tightly coupled interactions between different subsystems. Computational modeling attempts to resolve these couplings so we can efficiently e…
View article: INTEGRATE - Inverse Network Transformations for Efficient Generation of Robust Airfoil and Turbine Enhancements
INTEGRATE - Inverse Network Transformations for Efficient Generation of Robust Airfoil and Turbine Enhancements Open
The INTEGRATE (Inverse Network Transformations for Efficient Generation of Robust Airfoil and Turbine Enhancements) project is developing a new inverse-design capability for the aerodynamic design of wind turbine rotors using invertible ne…
View article: pyOptSparse: A Python framework for large-scaleconstrained nonlinear optimization of sparse systems
pyOptSparse: A Python framework for large-scaleconstrained nonlinear optimization of sparse systems Open
Wu et al., (2020). pyOptSparse: A Python framework for large-scale constrained nonlinear optimization of sparse systems. Journal of Open Source Software, 5(54), 2564, https://doi.org/10.21105/joss.02564
View article: Large-Scale Path-Dependent Optimization of Supersonic Aircraft
Large-Scale Path-Dependent Optimization of Supersonic Aircraft Open
Aircraft are multidisciplinary systems that are challenging to design due to interactions between the subsystems. The relevant disciplines, such as aerodynamic, thermal, and propulsion systems, must be considered simultaneously using a pat…
View article: Multidisciplinary Design Optimization Framework with Coupled Derivative Computation for Hybrid Aircraft
Multidisciplinary Design Optimization Framework with Coupled Derivative Computation for Hybrid Aircraft Open
International audience
View article: Multidisciplinary Design Optimization of an Aircraft Considering Path-Dependent Performance
Multidisciplinary Design Optimization of an Aircraft Considering Path-Dependent Performance Open
Aircraft are multidisciplinary systems that are challenging to design due to interactions between the subsystems. The relevant disciplines, such as aerodynamic, thermal, and propulsion systems, must be considered simultaneously using a pat…
View article: Multidisciplinary Optimization of a Turboelectric Tiltwing Urban Air Mobility Aircraft
Multidisciplinary Optimization of a Turboelectric Tiltwing Urban Air Mobility Aircraft Open
Urban air taxis, also known as urban air mobility (UAM) vehicles, are anticipated to be an area of significant market growth in the near future. These vehicles are typically vertical take-off and landing (VTOL) designs which are capable of…
View article: How Certain Physical Considerations Impact Aerostructural Wing Optimization
How Certain Physical Considerations Impact Aerostructural Wing Optimization Open
Wing design optimization has been studied extensively and is of continued interest as optimization tools are developed and become more accessible. In each of these studies, certain assumptions and simplifications are made to make the desig…
View article: Molecular dynamics simulations of heterogeneous cell membranes in response to uniaxial membrane stretches at high loading rates
Molecular dynamics simulations of heterogeneous cell membranes in response to uniaxial membrane stretches at high loading rates Open
The chemobiomechanical signatures of diseased cells are often distinctively different from that of healthy cells. This mainly arises from cellular structural/compositional alterations induced by disease development or therapeutic molecules…
View article: Component-based Geometry Manipulation for Aerodynamic Shape Optimization with Overset Meshes
Component-based Geometry Manipulation for Aerodynamic Shape Optimization with Overset Meshes Open
Mesh generation for high-fidelity CFD simulation and aerodynamic shape optimization is a timeconsuming task.We can model complex geometries accurately using overset meshes where multiple high-quality structured meshes corresponding to diff…