Results 1 to 10 of about 2,517 (120)

Review of continuous adjoint method for inverse design of indoor thermal environment [PDF]

open access: yesE3S Web of Conferences, 2022
The continuous adjoint method has been used in the indoor environment for more than ten years, but it has not been widely used up to now. This paper describes the current state of the continuous adjoint method and presents an overview of the continuous ...
Zhao Xingwang, Yin Yonggao
doaj   +1 more source

A multiphase CMAQ version 5.0 adjoint [PDF]

open access: yesGeoscientific Model Development, 2020
We present the development of a multiphase adjoint for the Community Multiscale Air Quality (CMAQ) model, a widely used chemical transport model. The adjoint model provides location- and time-specific gradients that can be used in various applications ...
S. Zhao   +19 more
doaj   +1 more source

Continuous Adjoint Topology Optimization of Duct Flow Configurations with Explicit Volume Constraint for Design Variable Update

open access: yesEnergies, 2022
The adjoint method is a very promising gradient-based optimisation framework for computational fluid dynamics (CFD), because of its independence of the computation cost from the number of design variables.
Mirza Popovac
doaj   +1 more source

A 4D-Var inversion system based on the icosahedral grid model (NICAM-TM 4D-Var v1.0) – Part 1: Offline forward and adjoint transport models [PDF]

open access: yesGeoscientific Model Development, 2017
A four-dimensional variational (4D-Var) method is a popular algorithm for inverting atmospheric greenhouse gas (GHG) measurements. In order to meet the computationally intense 4D-Var iterative calculation, offline forward and adjoint transport models are
Y. Niwa   +10 more
doaj   +1 more source

Adjoint based state estimation of compressible flow in porous media

open access: yesPetroleum, 2021
In this paper, we study the state estimation of compressible single phase flow in compressible porous media. The initial pressure distribution is estimated according to discrete adjoint approach based on the collected well pressure data.
Yanbin Sun, Zhibin Liu, Yanjie Hu
doaj   +1 more source

Cathode Shape Design for Steady-State Electrochemical Machining

open access: yesAlgorithms, 2023
The inverse or cathode shape design problem of electrochemical machining (ECM) deals with the computation of the shape of the tool cathode required for producing a workpiece anode of a desired shape.
Jinming Lu, Ewald A. Werner
doaj   +1 more source

An Adjoint Optimization Prediction Method for Partially Cavitating Hydrofoils

open access: yesJournal of Marine Science and Engineering, 2021
Much work has been done over the past years to obtain a better understanding, predict and alleviate the effects of cavitation on the performance of lifting surfaces for hydrokinetic turbines and marine propellers.
Dimitra Anevlavi, Kostas Belibassakis
doaj   +1 more source

Aeroacoustic and Aerodynamic Adjoint-Based Shape Optimization of an Axisymmetric Aero-Engine Intake

open access: yesAerospace, 2023
A continuous adjoint-based aeroacoustic optimization, based on a hybrid model including the Ffowcs Williams–Hawkings (FW–H) acoustic analogy, to account for the multidisciplinary design of aero-engine intakes with an axisymmetric geometry, is presented ...
Morteza Monfaredi   +4 more
doaj   +1 more source

Continuous Adjoint-Based Optimization of an Internally Cooled Turbine Blade—Mathematical Development and Application

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2021
This paper presents an adjoint-based shape optimization framework and its demonstration in a conjugate heat transfer problem in a turbine blading. The gradient of the objective function is computed based on the continuous adjoint method, which also ...
Xenofon Trompoukis   +4 more
doaj   +1 more source

Adjoint Optimization for Vehicle External Aerodynamics

open access: yesInternational Journal of Automotive Engineering, 2016
Adjoint optimization is an exciting and fast growing field that has many applications in the automotive industry. We focus on the usage of adjoint for the optimization of aerodynamic performance.
Karpouzas Georgios K.   +5 more
doaj   +1 more source

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