Results 41 to 50 of about 42,846 (241)

A comparative numerical study of turbulence models for the simulation of fire incidents: Application in ventilated tunnel fires

Cogent Engineering, 2015
The objective of this paper is to compare the overall performance of two turbulence models used for the simulation of fire scenarios in ventilated tunnels.
Konstantinos G. Stokos, Socrates I. Vrahliotis, Theodora I. Pappou, Sokrates Tsangaris   +3 more
doaj   +1 more source

Comparison of turbulent flow simulation results in 2d backward facing step channel using Ansys Fluent and Comsol Multiphysics programs [PDF]

BIO Web of Conferences
This paper conducts a comprehensive comparison of numerical simulations of turbulent flow in a sharply expanding channel, utilizing the NASA TMR database as a benchmark.
Madaliev Murodil, Abdujalilova Shairakhon, Abdulkhaev Zokhidjon, Usmonov Mavlonbek, Umirzakov Zuhriddin, Sattorov Abdusalom, Pulatov Kuvonchbek   +6 more
doaj   +1 more source

Trust‐region filter algorithms utilizing Hessian information for gray‐box optimization

AIChE Journal, EarlyView.
Abstract Optimizing industrial processes often involves gray‐box models that couple algebraic glass‐box equations with black‐box components lacking analytic derivatives. Such systems challenge derivative‐based solvers. The classical trust‐region filter (TRF) algorithm provides a robust framework but requires extensive parameter tuning and numerous ...
Gul Hameed, Tao Chen, Antonio del Rio Chanona, Lorenz T. Biegler, Michael Short   +4 more
wiley   +1 more source

The Validation of Rectangular Sharp Crested Weir Flow using ANSYS – FLUENT

Zanco Journal of Pure and Applied Sciences
A weir is a structure consisting of an obstruction such as a dam that built across the open channel to change its flow characteristics. In the present study, a total 12 experiments were done in the laboratory of civil engineering department inside an ...
Bruska S. Mamand , Pshtiwan O. Zaid
doaj   +1 more source

Numerical Modelling of Grate Combustion [PDF]

, 2012
Předkládaná práce je zaměřena na numerické modelování spalování tuhých paliv na roštu metodami výpočtové dynamiky tekutin (CFD). Jelikož výsledky CFD simulací roštového spalování závisí na kvalitě vstupních dat, která zahrnují i údaje o teplotě ...
Juřena, Tomáš
core  

Numerical and experimental design study of a regenerative pump [PDF]

, 2010
This paper presents the use of a commercial CFD code to simulate the flow-field within the regenerative pump and compare the CFD results with new experimental data.
Quail, Francis J., Scanlon, T.J., Stickland, M.T.   +2 more
core   +1 more source

AI in chemical engineering: From promise to practice

AIChE Journal, EarlyView.
Abstract Artificial intelligence (AI) in chemical engineering has moved from promise to practice: physics‐aware (gray‐box) models are gaining traction, reinforcement learning complements model predictive control (MPC), and generative AI powers documentation, digitization, and safety workflows.
Jia Wei Chew, Ronnie Andersson, Thomas Bierweiler, Patrik Ryttestal, Torsten Wik   +4 more
wiley   +1 more source

INCREASING ACCURACY OF CALCULATION OF THE PATTERN OF GAS TEMPERATURES AT THE EXIT FROM THE COMBUSTION CHAMBER OF A GTE BY THE THREE-DIMENSIONAL METHOD COMPUTER MODELING

Авіаційно-космічна техніка та технологія, 2020
The problem of numerical simulation of the gas flow with the combustion of atomized liquid fuel was solved (the equilibrium combustion model pdf was used along with the partially mixed mixture model) in the annular combustion chamber of a gas turbine ...
Сергей Анатольевич Евсеев, Дмитрий Викторович Козел, Игорь Федорович Кравченко   +2 more
doaj   +1 more source

Numerical and Experimental Study of Mixing Characteristics in a Spiral Micromixer

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Significant enhancement of mixing performance can be achieved by Dean vortices in spiral channels. In order to deeply explore the mixing mechanisms and variation laws in spiral micromixers, this work designed a spiral micromixer and adopted a combined method of experiments and numerical simulations to analyze the mixing performance and ...
Anming Yang, Shiqing Zheng
wiley   +1 more source

Study on Natural Gas Decarbonization Process Based on CO2 Desublimation Characteristics

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Natural gas decarbonization is a crucial processing step. In this study, the snow separation technology for removal of carbon dioxide in natural gas based on CO2 desublimation characteristics was introduced. The phase equilibrium calculation of CH4‐CO2 and N2‐CO2 system was carried out by using cubic equations of states (EOSs), and identified ...
Haiqin Wang, Jushi Cai, Zubin Zhang, Qishen Wu   +3 more
wiley   +1 more source