Results 41 to 50 of about 2,638,059 (271)

Distributionally risk‐receptive and risk‐averse network interdiction problems with general ambiguity set

Networks, Volume 81, Issue 1, Page 3-22, January 2023., 2023
Abstract We introduce generalizations of stochastic network interdiction problem with distributional ambiguity. Specifically, we consider a distributionally risk‐averse (or robust) network interdiction problem (DRA‐NIP) and a distributionally risk‐receptive network interdiction problem (DRR‐NIP) where a leader maximizes a follower's minimal expected ...
Sumin Kang, Manish Bansal
wiley   +1 more source

Sustainable Thermal Solutions: Enhancing Heat Transfer with Turbulators and Nanofluids

Advanced Energy and Sustainability Research, EarlyView.
Nanofluids, which are nanoparticle suspensions in base fluid, facilitate heat transmission due to their improved thermal conductivity. Turbulators, which are inserts into fluid flow channels, disturb the flow, increasing turbulence and hence the heat transfer rate.
Zafar Said, Aggrey Mwesigye, Lingala Syam Sundar, Arun Kumar Tiwari, Kalidasan Balasubramanian, Hafiz Muhammad Ali, Evangelos Bellos, Chaerin Gim, Mohammad Shamsuddin Ahmed, Jang‐Yeon Hwang   +9 more
wiley   +1 more source

Optimal deployment of indoor wireless local area networks

Networks, Volume 81, Issue 1, Page 23-50, January 2023., 2023
Abstract We present a two‐phase methodology to address the problem of optimally deploying indoor wireless local area networks. In the first phase, we use Helmholtz's equation to simulate electromagnetic fields in a typical environment such as an office floor.
Antoine Oustry, Marion Le Tilly, Thomas Clausen, Claudia D'Ambrosio, Leo Liberti   +4 more
wiley   +1 more source

An integrated scheduling and control scheme with two economic layers for demand side management of chemical processes

AIChE Journal, EarlyView.
Abstract Integrated dynamic scheduling (IDS) and economic nonlinear model predictive control (eNMPC) enable economic operation of chemical plants subject to volatile energy prices. Herein, we combine the two concepts into an integrated two‐layer scheme. Therein, IDS performs “long‐horizon” scheduling on a day‐ahead (DA) market and eNMPC “short‐horizon”
Jan C. Schulze, Chrysanthi Papadimitriou, Paul Kolmer, Alexander Mitsos   +3 more
wiley   +1 more source

On the matrices in B‐spline collocation methods for Riesz fractional equations and their spectral properties

Numerical Linear Algebra with Applications, Volume 30, Issue 1, January 2023., 2023
Abstract In this work, we focus on a fractional differential equation in Riesz form discretized by a polynomial B‐spline collocation method. For an arbitrary polynomial degree p$$ p $$, we show that the resulting coefficient matrices possess a Toeplitz‐like structure. We investigate their spectral properties via their symbol and we prove that, like for
Mariarosa Mazza, Marco Donatelli, Carla Manni, Hendrik Speleers   +3 more
wiley   +1 more source

Magnetic particle capture in high‐gradient magnetic separation: A theoretical and experimental study

AIChE Journal, EarlyView.
Abstract High‐gradient magnetic separation (HGMS) has traditionally been used in mineral processing, with many effective models developed for typically employed rod‐wire shaped matrices. However, its potential in bioprocessing, especially for high‐value products, introduces new demands on plant and matrix design. This study presents a multi‐scale model
Marko Tesanovic, J. Pedro de Souza, Martin Z. Bazant, Sonja Berensmeier   +3 more
wiley   +1 more source

A 3D fully‐nonlinear potential‐flow solver for efficient simulations of large‐scale free‐surface waves

International Journal for Numerical Methods in Engineering, Volume 124, Issue 1, Page 119-158, 15 January 2023., 2023
Abstract In the quest for a numerical method for surface waves and wave‐induced effects applicable when linear or weakly nonlinear methods are insufficient, a three‐dimensional numerical wave tank assuming fully‐nonlinear potential‐flow theory is proposed.
Finn‐Christian Wickmann Hanssen, Jens Bloch Helmers, Marilena Greco, Yanlin Shao   +3 more
wiley   +1 more source

Electrified distillation with flash vapor circulation and thermal storage for dynamic electricity markets

AIChE Journal, EarlyView.
Abstract Distillation is widely used for separating liquid mixtures, but its high heating demand poses challenges for achieving net‐zero emissions. This study presents an innovative approach to electrifying distillation for load adaptability and flexible operation, aligning with dynamic electricity markets driven by renewables.
Meng Qi, Xiaodong Zhang, David Shan‐Hill Wong, Chi‐Min Shu, Chengtian Cui, Anton A. Kiss   +5 more
wiley   +1 more source

Efficient formulation of a two‐noded geometrically exact curved beam element

International Journal for Numerical Methods in Engineering, Volume 124, Issue 3, Page 570-619, 15 February 2023., 2023
Abstract The article extends the formulation of a 2D geometrically exact beam element proposed by Jirásek et al. (2021) to curved elastic beams. This formulation is based on equilibrium equations in their integrated form, combined with the kinematic relations and sectional equations that link the internal forces to sectional deformation variables.
Martin Horák, Emma La Malfa Ribolla, Milan Jirásek   +2 more
wiley   +1 more source

Generalized optimization framework for synthesis of thermally coupled distillation columns

AIChE Journal, EarlyView.
Abstract In this article, a generalized optimization framework is proposed for the synthesis of thermally coupled distillation systems within an equation‐oriented environment. The proposed framework consists of three components: an efficient superstructure representation, a novel mathematical formulation, and the associated solution algorithm ...
Chao Liu, Yingjie Ma, Jie Li
wiley   +1 more source