Search Results - subject:"Two-phase flow"

Differentiability results and sensitivity calculation for optimal control of incompressible two-phase Navier-Stokes equations with surface tension

Diehl, Elisabeth; Haubner, Johannes; Ulbrich, Michael; … - In: Computational Optimization and Applications 87 (2022) 3, pp. 711-751

We analyze optimal control problems for two-phase Navier-Stokes equations with surface tension. Based on Lp-maximal regularity of the underlying linear problem and recent well-posedness results of the problem for sufficiently small data we show the differentiability of the solution with respect...

Persistent link: https://www.econbiz.de/10015192108

Differentiability results and sensitivity calculation for optimal control of incompressible two-phase Navier-Stokes equations with surface tension

Diehl, Elisabeth; Haubner, Johannes; Ulbrich, Michael; … - In: Computational Optimization and Applications 87 (2022) 3, pp. 711-751

Persistent link: https://www.econbiz.de/10015408297

Theoretical and experimental evidence on stock market volatilities : a two-phase flow model

Wang, Limin; Xu, Yingying; Salem, Sultan - In: Economic research 34 (2021) 1,3, pp. 3245-3269

Persistent link: https://www.econbiz.de/10014233517

The measurement of gas solid two-phase flow parameters based on electrical capacitance tomography technology

Tian, Haijun; Zhou, Yunlong; Yang, Ting; Zhao, Yanghui - In: International journal of networking and virtual … 20 (2019) 1, pp. 1-13

Persistent link: https://www.econbiz.de/10012030839

Methods to Increase the Robustness of Finite-Volume Flow Models in Thermodynamic Systems

Quoilin, Sylvain; Bell, Ian; Desideri, Adriano; … - In: Energies 7 (2014) 3, pp. 1621-1640

simulation speed, instabilities and simulation failures. In the particular case of two-phase flow models, they are usually linked …

Persistent link: https://www.econbiz.de/10010752742

An Efficient Drift-Flux Closure Relationship to Estimate Liquid Holdups of Gas-Liquid Two-Phase Flow in Pipes

Choi, Jinho; Pereyra, Eduardo; Sarica, Cem; Park, Changhyup - In: Energies 5 (2012) 12, pp. 5294-5306

The reliable predictions of liquid holdup and pressure drop are essential for pipeline design in oil and gas industry. In this study, the drift-flux approach is utilized to calculate liquid holdups. This approach has been widely used in formulation of the basic equations for multiphase flow in...

Persistent link: https://www.econbiz.de/10010676017

Analysis of CO2 transmission in a micro direct methanol fuel cell

Yuan, Zhenyu; Yang, Jie; Li, Zipeng; Sun, Yuge; Ye, Ning; … - In: Energy 83 (2015) C, pp. 496-502

with the active area of 0.8 cm × 0.8 cm is designed and fabricated to evaluate the two-phase flow characteristic as well as …

Persistent link: https://www.econbiz.de/10011264402

Multivariate multiscale entropy analysis of horizontal oil–water two-phase flow

Gao, Zhong-Ke; Ding, Mei-Shuang; Geng, He; Jin, Ning-De - In: Physica A: Statistical Mechanics and its Applications 417 (2015) C, pp. 7-17

problem in the fields of time series analysis and fluid mechanics. We systematically conduct a horizontal oil–water two-phase … flow experiment and use our designed distributed conductance sensor to measure multivariate signals from five different …

Persistent link: https://www.econbiz.de/10011077862

Two-phase flow pressure drop in flow channels of proton exchange membrane fuel cells: Review of experimental approaches

Mortazavi, Mehdi; Tajiri, Kazuya - In: Renewable and Sustainable Energy Reviews 45 (2015) C, pp. 296-317

. The water produced during the operation of a PEM fuel cell results in a liquid–gas two-phase flow in flow channels. A … successful PEM fuel cell design requires a comprehensive knowledge about different properties of liquid–gas two-phase flow. One … such property, that has a dominant impact on the performance of a PEM fuel cell, is the two-phase flow pressure drop within …

Persistent link: https://www.econbiz.de/10011209037

Numerical simulations of two-phase flow in an anode gas channel of a proton exchange membrane fuel cell

Ferreira, Rui B.; Falcão, D.S.; Oliveira, V.B.; Pinto, … - In: Energy 82 (2015) C, pp. 619-628

In this work, the two-phase flow in an anode gas channel of a PEM (proton exchange membrane) fuel cell is numerically …

Persistent link: https://www.econbiz.de/10011209556